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1. A multi-wavelength investigation of PSR J2229+6114 and its pulsar wind nebula in the radio, X-ray, and gamma-ray bands

Author

Pope, I., Mori, K., Abdelmaguid, M., Gelfand, J. D., Reynolds, S. P., Safi-Harb, S., Hailey, C. J., An, H., Collaboration, VERITAS, Bangale, P., Batista, P., Benbow, W., Buckley, J. H., Capasso, M., Christiansen, J. L., Chromey, A. J., Falcone, A., Feng, Q., Finley, J. P., Foote, G. M, Gallagher, G., Hanlon, W. F, Hanna, D., Hervet, O., Holder, J., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Kleiner, T. K., Korzoun, N., Krennrich, F., Kumar, S., Lang, M. J., Maier, G., McGrath, C. E, Mooney, C. L., Moriarty, P., Mukherjee, R., O'Brien, S., Ong, R. A., Park, N., Patel, S. R., Pfrang, K., Pohl, M., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Roache, E., Sadeh, I., Saha, L., Sembroski, G. H., Tak, D., Tucci, J. V., Weinstein, A., Williams, D. A., and Woo, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

G106.3$+$2.7, commonly considered a composite supernova remnant (SNR), is characterized by a boomerang-shaped pulsar wind nebula (PWN) and two distinct ("head" & "tail") regions in the radio band. A discovery of very-high-energy (VHE) gamma-ray emission ($E_\gamma > 100$ GeV) followed by the recent detection of ultra-high-energy (UHE) gamma-ray emission ($E_\gamma > 100$ TeV) from the tail region suggests that G106.3$+$2.7 is a PeVatron candidate. We present a comprehensive multi-wavelength study of the Boomerang PWN (100" around PSR J2229+6114) using archival radio and Chandra data obtained from two decades ago, a new NuSTAR X-ray observation from 2020, and upper limits on gamma-ray fluxes obtained by Fermi and VERITAS observatories. The NuSTAR observation allowed us to detect a 51.67 ms spin period from the pulsar PSR J2229+6114 and the PWN emission characterized by a power-law model with $\Gamma = 1.52\pm0.06$ up to 20 keV. Contrary to the previous radio study by Kothes et al. 2006, we prefer a much lower PWN B-field ($B\sim3$ $\mu$G) and larger distance ($d \sim 8$ kpc) based on (1) the non-varying X-ray flux over the last two decades, (2) the energy-dependent X-ray PWN size resulting from synchrotron burn-off and (3) the multi-wavelength spectral energy distribution (SED) data. Our SED model suggests that the PWN is currently re-expanding after being compressed by the SNR reverse shock $\sim 1000$ years ago. In this case, the head region should be formed by GeV--TeV electrons injected earlier by the pulsar propagating into the low density environment.

Published
2023

2. Search for Ultraheavy Dark Matter from Observations of Dwarf Spheroidal Galaxies with VERITAS

Author

Acharyya, A., Archer, A., Bangale, P., Bartkoske, J. T., Batista, P., Baumgart, M., Benbow, W., Buckley, J. H., Falcone, A., Feng, Q., Finley, J. P., Foote, G. M., Fortson, L., Furniss, A., Gallagher, G., Hanlon, W. F., Hervet, O., Hoang, J., Holder, J., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kherlakian, M., Kieda, D., Kleiner, T. K., Korzoun, N., Krennrich, F., Lang, M. J., Lundy, M., Maier, G., McGrath, C. E, Moriarty, P., O'Brien, S., Ong, R. A., Pfrang, K., Pohl, M., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Roache, E., Rodd, N. L., Ryan, J. L., Sadeh, I., Saha, L., Santander, M., Sembroski, G. H., Shang, R., Splettstoesser, M., Tak, D., Tucci, J. V., Vassiliev, V. V., and Williams, D. A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

Dark matter is a key piece of the current cosmological scenario, with weakly interacting massive particles (WIMPs) a leading dark matter candidate. WIMPs have not been detected in their conventional parameter space (100 GeV $\lesssim M_{\chi} \lesssim$ 100 TeV), a mass range accessible with current Imaging Atmospheric Cherenkov Telescopes. As ultraheavy dark matter (UHDM; $M_{\chi} \gtrsim$ 100 TeV) has been suggested as an under-explored alternative to the WIMP paradigm, we search for an indirect dark matter annihilation signal in a higher mass range (up to 30 PeV) with the VERITAS gamma-ray observatory. With 216 hours of observations of four dwarf spheroidal galaxies, we perform an unbinned likelihood analysis. We find no evidence of a $\gamma$-ray signal from UHDM annihilation above the background fluctuation for any individual dwarf galaxy nor for a joint-fit analysis, and consequently constrain the velocity-weighted annihilation cross section of UHDM for dark matter particle masses between 1 TeV and 30 PeV. We additionally set constraints on the allowed radius of a composite UHDM particle., Comment: 10 pages, 7 figures

Published
2023
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3. VERITAS and Fermi-LAT constraints on the Gamma-ray Emission from Superluminous Supernovae SN2015bn and SN2017egm

Author

Acharyya, A., Adams, C. B., Bangale, P., Benbow, W., Buckley, J. H., Capasso, M., Dwarkadas, V. V., Errando, M., Falcone, A., Feng, Q., Finley, J. P., Foote, G. M., Fortson, L., Furniss, A., Gallagher, G., Gent, A., Hanlon, W. F, Hervet, O., Holder, J., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kherlakian, M., Kieda, D., Kleiner, T. K, Kumar, S., Lang, M. J., Lundy, M., Maier, G., McGrath, C. E, Millis, J., Moriarty, P., Mukherjee, R., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Patel, S. R., Pfrang, K., Pohl, M., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Roache, E., Ryan, J. L., Sadeh, I., Santander, M., Sembroski, G. H., Shang, R., Splettstoesser, M., Tak, D., Tucci, J. V., Weinstein, A., Williams, D. A., Metzger, B. D., Nicholl, M., and Vurm, I.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Superluminous supernovae (SLSNe) are a rare class of stellar explosions with luminosities ~10-100 times greater than ordinary core-collapse supernovae. One popular model to explain the enhanced optical output of hydrogen-poor (Type I) SLSNe invokes energy injection from a rapidly spinning magnetar. A prediction in this case is that high-energy gamma rays, generated in the wind nebula of the magnetar, could escape through the expanding supernova ejecta at late times (months or more after optical peak). This paper presents a search for gamma-ray emission in the broad energy band from 100 MeV to 30 TeV from two Type I SLSNe, SN2015bn, and SN2017egm, using observations from Fermi-LAT and VERITAS. Although no gamma-ray emission was detected from either source, the derived upper limits approach the putative magnetar's spin-down luminosity. Prospects are explored for detecting very-high-energy (VHE; 100 GeV - 100 TeV) emission from SLSNe-I with existing and planned facilities such as VERITAS and CTA., Comment: 20 pages, 7 figures, 2 tables

Published
2023
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4. VTSCat: The VERITAS Catalog of Gamma-Ray Observations

Author

Acharyya, A., Adams, C. B., Archer, A., Bangale, P., Bartkoske, J. T., Batista, P., Benbow, W., Buckley, J. H., Brill, A., Capasso, M., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Errando, M., Falcone, A., Farrell, K. A, Feng, Q., Finley, J. P., Foote, G. M, Fortson, L., Furniss, A., Gallagher, G., Gent, A., Giuri, C., Gueta, O., Hanlon, W. F, Hanna, D., Hassan, T., Hervet, O., Hoang, J., Holder, J., Hughes, G., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Kleiner, T. K., Korzoun, N., Krennrich, F., Kumar, S., Lang, M. J., Lundy, M., Maier, G., McGrath, C. E, Millard, M. J, Mooney, C. L., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Pandel, D., Park, N., Patel, S. R., Patel, S., Pfrang, K., Pichel, A., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Rovero, A. C., Rulten, C., Ryan, J. L., Sadeh, I., Santander, M., Schlenstedt, S., Sembroski, G. H., Shang, R., Splettstoesser, M., Stevenson, B., Tak, D., Vassiliev, V. V., Wakely, S. P., Weinstein, A., Williams, D. A., Williamson, T. J, Angelini, L., Basu-Zych, A., Sabol, E., and Smale, A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The ground-based gamma-ray observatory VERITAS (Very Energetic Radiation Imaging Telescope Array System) is sensitive to photons of astrophysical origin with energies in the range between $\approx 85$ GeV to $\approx 30$ TeV. The instrument consists of four 12-m diameter imaging Cherenkov telescopes operating at the Fred Lawrence Whipple Observatory (FLWO) in southern Arizona. VERITAS started four-telescope operations in 2007 and collects about 1100 hours of good-weather data per year. The VERITAS collaboration has published over 100 journal articles since 2008 reporting on gamma-ray observations of a large variety of objects: Galactic sources like supernova remnants, pulsar wind nebulae, and binary systems; extragalactic sources like star forming galaxies, dwarf-spheroidal galaxies, and highly-variable active galactic nuclei. This note presents VTSCat: the catalog of high-level data products from all VERITAS publications., Comment: Version with corrected author list

Published
2023
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5. Gamma-ray observations of MAXI J1820+070 during the 2018 outburst

Author

Abe, H., Abe, S., Acciari, V. A., Aniello, T., Ansoldi, S., Antonelli, L. A., Engels, A. Arbet, Arcaro, C., Artero, M., Asano, K., Baack, D., Babić, A., Baquero, A., de Almeida, U. Barres, Barrio, J. A., Batković, I., Baxter, J., González, J. Becerra, Bednarek, W., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Bošnjak, Ž., Burelli, I., Busetto, G., Carosi, R., Carretero-Castrillo, M., Ceribella, G., Chai, Y., Chilingarian, A., Cikota, S., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Amico, G., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Del Popolo, A., Delfino, M., Delgado, J., Mendez, C. Delgado, Depaoli, D., Di Pierro, F., Di Venere, L., Prester, D. Dominis, Donini, A., Dorner, D., Doro, M., Elsaesser, D., Emery, G., Ramazani, V. Fallah, Fariña, L., Fattorini, A., Font, L., Fruck, C., Fukami, S., Fukazawa, Y., López, R. J. García, Garczarczyk, M., Gasparyan, S., Gaug, M., Paiva, J. G. Giesbrecht, Giglietto, N., Giordano, F., Gliwny, P., Godinović, N., Grau, R., Green, D., Green, J. G., Hadasch, D., Hahn, A., Hassan, T., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., Hütten, M., Imazawa, R., Inada, T., Iotov, R., Ishio, K., Martínez, I. Jiménez, Jormanainen, J., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Linhoff, L., Lombardi, S., Longo, F., López-Coto, R., López-Moya, M., López-Oramas, A., Loporchio, S., Lorini, A., Lyard, E., Fraga, B. Machado de Oliveira, Majumdar, P., Makariev, M., Maneva, G., Mang, N., Manganaro, M., Mangano, S., Mannheim, K., Mariotti, M., Martínez, M., Aguilar, A. Mas, Mazin, D., Menchiari, S., Mender, S., Mićanović, S., Miceli, D., Miener, T., Miranda, J. M., Mirzoyan, R., Molina, E., Mondal, H. A., Moralejo, A., Morcuende, D., Moreno, V., Nakamori, T., Nanci, C., Nava, L., Neustroev, V., Rosillo, M. Nievas, Nigro, C., Nilsson, K., Nishijima, K., Ekoume, T. Njoh, Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Okumura, A., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletić, L., Persic, M., Pihet, M., Pirola, G., Podobnik, F., Moroni, P. G. Prada, Prandini, E., Principe, G., Priyadarshi, C., Puljak, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schleicher, B., Schmidt, K., Schmuckermaier, F., Schubert, J. L., Schweizer, T., Sitarek, J., Sliusar, V., Sobczynska, D., Spolon, A., Stamerra, A., Strišković, J., Strom, D., Strzys, M., Suda, Y., Surić, T., Tajima, H., Takahashi, M., Takeishi, R., Tavecchio, F., Temnikov, P., Terauchi, K., Terzić, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., van Scherpenberg, J., Acosta, M. Vazquez, Ventura, S., Verguilov, V., Viale, I., Vigorito, C. F., Vitale, V., Vovk, I., Walter, R., Will, M., Wunderlich, C., Yamamoto, T., Zarić, D., Abdalla, H., Aharonian, F., Benkhali, F. Ait, Angüner, E. O., Ashkar, H., Backes, M., Baghmanyan, V., Martins, V. Barbosa, Batzofin, R., Becherini, Y., Berge, D., Bernlöhr, K., Böttcher, M., Boisson, C., Bolmont, J., de Lavergne, M. de Bony, Bradascio, F., Breuhaus, M., Brose, R., Brun, F., Bulik, T., Bylund, T., Cangemi, F., Caroff, S., Casanova, S., Cerruti, M., Chand, T., Chandra, S., Chen, A., Chibueze, O. U., Cotter, G., Cristofari, P., Mbarubucyeye, J. Damascene, Devin, J., Djannati-Ataï, A., Dmytriiev, A., Egberts, K., Ernenwein, J. -P., Fiasson, A., de Clairfontaine, G. Fichet, Fontaine, G., Füßling, M., Funk, S., Gabici, S., Ghafourizadeh, S., Giavitto, G., Glawion, D., Glicenstein, J. F., Goswami, P., Grolleron, G., Hinton, J. A., Hörbe, M., Hoischen, C., Holch, T. L., Holler, M., Horns, D., Huang, Zhiqiu, Jamrozy, M., Jankowsky, F., Joshi, V., Jung-Richardt, I., Kasai, E., Katarzyński, K., Katz, U., Khélifi, B., Kluźniak, W., Komin, Nu., Kosack, K., Kostunin, D., Lang, R. G., Stum, S. Le, Lemière, A., Lemoine-Goumard, M., Lenain, J. -P., Leuschner, F., Lohse, T., Luashvili, A., Lypova, I., Mackey, J., Majumdar, J., Malyshev, D., Marandon, V., Marchegiani, P., Martí-Devesa, G., Marx, R., Maurin, G., Meyer, M., Mitchell, A., Moderski, R., Mohrmann, L., Montanari, A., Moulin, E., Muller, J., Murach, T., Nakashima, K., de Naurois, M., Nayerhoda, A., Niemiec, J., Noel, A. Priyana, O'Brien, P., Ohm, S., Olivera-Nieto, L., Wilhelmi, E. de Ona, Ostrowski, M., Panny, S., Panter, M., Parsons, R. D., Poireau, V., Prokhorov, D. A., Prokoph, H., Pühlhofer, G., Punch, M., Quirrenbach, A., Reichherzer, P., Reimer, A., Reimer, O., Renaud, M., Rieger, F., Rowell, G., Rudak, B., Ricarte, H. Rueda, Ruiz-Velasco, E., Sahakian, V., Salzmann, H., Santangelo, A., Sasaki, M., Schäfer, J., Schüssler, F., Schutte, H. M., Schwanke, U., Shapopi, J. N. S., Sol, H., Specovius, A., Spencer, S., Stawarz, Ł., Steenkamp, R., Steinmassl, S., Steppa, C., Sushch, I., Suzuki, H., Takahashi, T., Tanaka, T., Thorpe-Morgan, C., Tluczykont, M., Tomankova, L., Tsuji, N., Uchiyama, Y., van Eldik, C., van Soelen, B., Vecchi, M., Veh, J., Venter, C., Vink, J., Wagner, S. J., White, R., Wierzcholska, A., Wong, Yu Wun, Yusafzai, A., Zacharias, M., Zanin, R., Zargaryan, D., Zdziarski, A. A., Zech, A., Zhu, S. J., Zouari, S., Żywucka, N., Acharyya, A., Adams, C. B., Batista, P., Benbow, W., Capasso, M., Christiansen, J. L., Chromey, A. J., Errando, M., Falcone, A., Feng, Q., Finley, J. P., Foote, G. M, Fortson, L., Furniss, A., Gent, A., Hanlon, W. F, Hervet, O., Holder, J., Hona, B., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kherlakian, M., Kleiner, T. K., Kumar, S., Lang, M. J., Lundy, M., Maier, G., McGrath, C. E., Millis, J., Moriarty, P., Mukherjee, R., O'Brien, S., Ong, R. A., Park, N., Patel, S. R., Pfrang, K., Pohl, M., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Roache, E., Ryan, J. L., Sadeh, I., Saha, L., Santander, M., Sembroski, G. H., Shang, R., Splettstoesser, M., Tak, D., Tucci, J. V., Weinstein, A., Williams, D. A., Williamson, T. J., Bosch-Ramon, V., Celma, C., Linares, M., Russell, D. M., and Sala, G.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

MAXI J1820+070 is a low-mass X-ray binary with a black hole as a compact object. This binary underwent an exceptionally bright X-ray outburst from March to October 2018, showing evidence of a non-thermal particle population through its radio emission during this whole period. The combined results of 59.5 hours of observations of the MAXI J1820+070 outburst with the H.E.S.S., MAGIC and VERITAS experiments at energies above 200 GeV are presented, together with Fermi-LAT data between 0.1 and 500 GeV, and multiwavelength observations from radio to X-rays. Gamma-ray emission is not detected from MAXI J1820+070, but the obtained upper limits and the multiwavelength data allow us to put meaningful constraints on the source properties under reasonable assumptions regarding the non-thermal particle population and the jet synchrotron spectrum. In particular, it is possible to show that, if a high-energy gamma-ray emitting region is present during the hard state of the source, its predicted flux should be at most a factor of 20 below the obtained Fermi-LAT upper limits, and closer to them for magnetic fields significantly below equipartition. During the state transitions, under the plausible assumption that electrons are accelerated up to ~ 500 GeV, the multiwavelength data and the gamma-ray upper limits lead consistently to the conclusion that a potential high-energy and very-high-energy gamma-ray emitting region should be located at a distance from the black hole ranging between 10^11 and 10^13 cm. Similar outbursts from low-mass X-ray binaries might be detectable in the near future with upcoming instruments such as CTA., Comment: 15 pages, 5 figures. Accepted for publication in MNRAS

Published
2022
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6. Search for Ultraheavy Dark Matter from Observations of Dwarf Spheroidal Galaxies with VERITAS

Author

Acharyya, A, Archer, A, Bangale, P, Bartkoske, JT, Batista, P, Baumgart, M, Benbow, W, Buckley, JH, Falcone, A, Feng, Q, Finley, JP, Foote, GM, Fortson, L, Furniss, A, Gallagher, G, Hanlon, WF, Hervet, O, Hoang, J, Holder, J, Humensky, TB, Jin, W, Kaaret, P, Kertzman, M, Kherlakian, M, Kieda, D, Kleiner, TK, Korzoun, N, Krennrich, F, Lang, MJ, Lundy, M, Maier, G, McGrath, CE, Moriarty, P, O’Brien, S, Ong, RA, Pfrang, K, Pohl, M, Pueschel, E, Quinn, J, Ragan, K, Reynolds, PT, Roache, E, Rodd, NL, Ryan, JL, Sadeh, I, Saha, L, Santander, M, Sembroski, GH, Shang, R, Splettstoesser, M, Tak, D, Tucci, JV, Vassiliev, VV, and Williams, DA

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics, Space sciences
Abstract

Dark matter is a key piece of the current cosmological scenario, with weakly interacting massive particles (WIMPs) a leading dark matter candidate. WIMPs have not been detected in their conventional parameter space (100 GeV ≲M χ ≲ 100 TeV), a mass range accessible with current Imaging Atmospheric Cherenkov Telescopes. As ultraheavy dark matter (UHDM; M χ ≳ 100 TeV) has been suggested as an underexplored alternative to the WIMP paradigm, we search for an indirect dark matter annihilation signal in a higher mass range (up to 30 PeV) with the VERITAS γ-ray observatory. With 216 hr of observations of four dwarf spheroidal galaxies, we perform an unbinned likelihood analysis. We find no evidence of a γ-ray signal from UHDM annihilation above the background fluctuation for any individual dwarf galaxy nor for a joint-fit analysis, and consequently constrain the velocity-weighted annihilation cross section of UHDM for dark matter particle masses between 1 TeV and 30 PeV. We additionally set constraints on the allowed radius of a composite UHDM particle.

Published
2023

7. The throughput calibration of the VERITAS telescopes

Author

Adams, C. B., Benbow, W., Brill, A., Buckley, J. H., Christiansen, J. L., Falcone, A., Feng, Q., Finley, J. P., Foote, G. M, Fortson, L., Furniss, A., Giuri, C., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hona, B., Humensky, T. B., Jin, W., Kaaret, P., Kleiner, T. K, Kumar, S., Lang, M. J., Lundy, M., Maier, G., Moriarty, P., Mukherjee, R., Rosillo, M. Nievas, O'Brien, S., Park, N., Patel, S., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Roache, E., Ryan, J. L., Santander, M., Weinstein, A., Williams, D. A., and Williamson, T. J

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

Context. The response of imaging atmospheric Cherenkov telescopes to incident {\gamma}-ray-initiated showers in the atmosphere changes as the telescopes age due to exposure to light and weather. These aging processes affect the reconstructed energies of the events and {\gamma}-ray fluxes. Aims. This work discusses the implementation of signal calibration methods for the Very Energetic Radiation Imaging Telescope Array System (VERITAS) to account for changes in the optical throughput and detector performance over time. Methods. The total throughput of a Cherenkov telescope is the product of camera-dependent factors, such as the photomultiplier tube gains and their quantum efficiencies, and the mirror reflectivity and Winston cone response to incoming radiation. This document summarizes different methods to determine how the camera gains and mirror reflectivity have evolved over time and how we can calibrate this changing throughput in reconstruction pipelines for imaging atmospheric Cherenkov telescopes. The implementation is validated against seven years of observations with the VERITAS telescopes of the Crab Nebula, which is a reference object in very-high-energy astronomy. Results. Regular optical throughput monitoring and the corresponding signal calibrations are found to be critical for the reconstruction of extensive air shower images. The proposed implementation is applied as a correction to the signals of the photomultiplier tubes in the telescope simulation to produce fine-tuned instrument response functions. This method is shown to be effective for calibrating the acquired {\gamma}-ray data and for recovering the correct energy of the events and photon fluxes. At the same time, it keeps the computational effort of generating Monte Carlo simulations for instrument response functions affordably low., Comment: 19 pages, 20 figures, 2 tables Received: 22 September 2021 / Accepted: 03 November 2021

Published
2021
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8. Variability and Spectral Characteristics of Three Flaring Gamma-ray Quasars Observed by VERITAS and Fermi-LAT

Author

Adams, C. B., Batshoun, J., Benbow, W., Brill, A., Buckley, J. H., Capasso, M., Cavins, B., Christiansen, J. L., Coppi, P., Errando, M., Farrell, K. A, Feng, Q., Finley, J. P., Foote, G. M., Fortson, L., Furniss, A., Gent, A., Giuri, C., Hanna, D., Hassan, T., Hervet, O., Holder, J., Houck, M., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Krennrich, F., Kumar, S., Lundy, M., Maier, G., McGrath, C. E, Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Oppenheimer, A., Otte, A. N., Patel, S., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Rhatigan, A., Ribeiro, D., Roache, E., Ryan, J. L., Santander, M., Sembroski, G. H., Williams, D. A., Williamson, T. J, Valverde, J., Horan, D., Buson, S., Cheung, C. C., Ciprini, S., Gasparrini, D., Ojha, R., van Zyl, P., and Sironi, L.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Flat spectrum radio quasars (FSRQs) are the most luminous blazars at GeV energies, but only rarely emit detectable fluxes of TeV gamma rays, typically during bright GeV flares. We explore the gamma-ray variability and spectral characteristics of three FSRQs that have been observed at GeV and TeV energies by Fermi-LAT and VERITAS, making use of almost 100 hours of VERITAS observations spread over 10 years: 3C 279, PKS 1222+216, and Ton 599. We explain the GeV flux distributions of the sources in terms of a model derived from a stochastic differential equation describing fluctuations in the magnetic field in the accretion disk, and estimate the timescales of magnetic flux accumulation and stochastic instabilities in their accretion disks. We identify distinct flares using a procedure based on Bayesian blocks and analyze their daily and sub-daily variability and gamma-ray energy spectra. Using observations from VERITAS as well as Fermi, Swift, and the Steward Observatory, we model the broadband spectral energy distributions of PKS 1222+216 and Ton 599 during VHE-detected flares in 2014 and 2017, respectively, strongly constraining the jet Doppler factors and gamma-ray emission region locations during these events. Finally, we place theoretical constraints on the potential production of PeV-scale neutrinos during these VHE flares., Comment: 34 pages, 13 figures. Accepted for publication in the Astrophysical Journal

Published
2021
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9. Multi-Wavelength Observation Campaign of the TeV Gamma-Ray Binary HESS J0632+057 with NuSTAR, VERITAS, MDM, and Swift

Author

Tokayer, Y. M., An, H., Halpern, J. P., Kim, J., Mori, K., Hailey, C. J., Adams, C. B., Benbow, W., Brill, A., Buckley, J. H., Capasso, M., Errando, M., Falcone, A., Farrell, K. A, Foote, G. M, Fortson, L., Furniss, A., Gent, A., Giuri, C., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hona, B., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Lang, M. J., Maier, G., McGrath, C. E, Moriarty, P., Mukherjee, R., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Park, N., Patel, S., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Roache, E., Ryan, J. L., Santander, M., Schlenstedt, S., Sembroski, G. H., Weinstein, A., Williams, D. A., and Williamson, T. J

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

HESS J0632+057 belongs to a rare subclass of binary systems which emits gamma-rays above 100 GeV. It stands out for its distinctive high-energy light curve, which features a sharp ``primary'' peak and broader ``secondary'' peak. We present the results of contemporaneous observations by NuSTAR and VERITAS during the secondary peak between Dec. 2019 and Feb. 2020, when the orbital phase ($\phi$) is between 0.55 and 0.75. NuSTAR detected X-ray spectral evolution, while VERITAS detected TeV emission. We fit a leptonic wind-collision model to the multi-wavelength spectra data obtained over the four NuSTAR and VERITAS observations, constraining the pulsar spin-down luminosity and the magnetization parameter at the shock. Despite long-term monitoring of the source from Oct. 2019 to Mar. 2020, the MDM observatory did not detect significant variation in H$\alpha$ and H$\beta$ line equivalent widths, an expected signature of Be-disk interaction with the pulsar. Furthermore, fitting folded Swift-XRT light curve data with an intra-binary shock model constrained the orbital parameters, suggesting two orbital phases (at $\phi_D = 0.13$ and 0.37) where the pulsar crosses the Be-disk, as well as phases for the periastron ($\phi_0 = 0.30$) and inferior conjunction ($\phi_{\text{IFC}} = 0.75$). The broad-band X-ray spectra with Swift-XRT and NuSTAR allowed us to measure a higher neutral hydrogen column density at one of the predicted disk-passing phases., Comment: 21 pages, 9 figures, accepted to ApJ

Published
2021
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10. Observation of the gamma-ray binary HESS J0632+057 with the H.E.S.S., MAGIC, and VERITAS telescopes

Author

Adams, C. B., Benbow, W., Brill, A., Buckley, J. H., Capasso, M., Chromey, A. J., Errando, M., Falcone, A., Farrell, K. A., Feng, Q., Finley, J P., Foote, G., Fortson, L., Furniss, A., Gent, A., Gillanders, G. H., Giuri, C., Gueta, O., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hona, B., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Kleiner, T. K., Krennrich, F., Kumar, S., Lang, M. J., Lundy, M., Maier, G., McGrath, C. E., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Park, N., Patel, S., Pfrang, K., Pichel, A., Pohl, M., Prado, R. R., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Roache, E., Rovero, A. C., Ryan, J. L., Santander, M., Schlenstedt, S., Sembroski, G. H., Shang, R., Tak, D., Vassiliev, V. V., Weinstein, A., Williams, D. A., Williamson, T. J., Acciari, V. A., Ansoldi, S., Antonelli, L. A., Engels, A. Arbet, Artero, M., Asano, K., Baack, D., Babić, A., Baquero, A., de Almeida, U. Barres, Barrio, J. A., Batković, I., González, J. Becerra, Bednarek, W., Bellizzi, L., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bökenkamp, H., Bonnol, G., Bošnjak, Ž., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Amico, G., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Mendez, C. Delgado, Depaoli, D., Di Pierro, F., Di Venere, L., Espiñeira, E. Do Souto, Prester, D. Dominis, Donini, A., Dorner, D., Doro, M., Elsaesser, D., Ramazani, V. Fallah, Fattorini, A., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Fukazawa, Y., López, R. J. García, Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinović, N., Green, J. G., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., Hütten, M., Inada, T., Ishio, K., Iwamura, Y., Martínez, I. Jiménez, Jormanainen, J., Jouvin, L., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Linhoff, L., Lombardi, S., Longo, F., López-Coto, R., López-Moya, M., López-Oramas, A., Loporchio, S., Fraga, B. Machado de Oliveira, Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Menchiari, S., Mender, S., Mićanović, S., Miceli, D., Miener, T., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Nakamori, T., Nava, L., Neustroev, V., Nigro, C., Nilsson, K., Nishijima, K., Nozaki, K. Noda S., Ohtani, Y., Oka, T., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletić, L., Peñil, P., Persic, M., Pihet, M., Moroni, P. G. Prada, Prandini, E., Priyadarshi, C., Puljak, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., Šnidarić, I., Spolon, D. Sobczynska A., Stamerra, A., Strišković, J., Strom, D., Strzys, M., Suda, Y., Surić, T., Takahashi, M., Takeishi, R., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., van Scherpenberg, J., Vanzo, G., Acosta, M. Vazquez, Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Wunderlich, C., Yamamoto, T., Zarić, D., Abdalla, H., Aharonian, F., Ait-Benkhali, F., Anguener, O., Arcaro, C., Ashkar, H., Backes, M., Martins, V. Barbosa, Barnard, M., Batzofin, R., Becherini, Y., Berge, D., Bernloehr, K., Bi, B., Boettcher, M., Boisson, C., Bolmont, J., de Bony, M., Breuhaus, M., Brose, R., Brun, F., Bulik, T., Caroff, S., Casanova, S., Chand, T., Chen, A., Cotter, G., Mbarubucyeye, J. Damascene, Devin, J., Djannati-Atai, A., Egberts, K., Ernenwein, J., Fegan, S., Fiasson, A., de Clairfontaine, G. Fichet, Fontaine, G., Fuessling, M., Funk, S., Gabici, S., Giavitto, G., Glawion, D., Glicenstein, J., Grondin, M., Hinton, J., Hofmann, W., Holch, T., Holler, M., Horns, D., Huang, Z., Jamrozy, M., Jankowsky, F., Joshi, V., Jung-Richardt, I., Kasai, E., Katarzynski, K., Khelifi, B., Komin, N., Kosack, K., Kostunin, D., Stum, S. Le, Lemiere, A., Lenain, J., Leuschner, F., Levy, C., Lohse, T., Luashvili, A., Lypova, I., Mackey, J., Majumdar, J., Malyshev, D., Marandon, V., Marchegiani, P., Marcowith, A., Marti'i-Devesa, G., Marx, R., Maurin, G., Meintjes, P., Mitchell, A., Moderski, R., Mohrmann, L., Montanari, A., Moulin, E., Muller, J., Murach, T., de Naurois, M., Nayerhoda, A., Niemiec, J., Noel, A., O'Brien, P., Ohm, S., Olivera-Nieto, L., de Ona-Wilhelmi, E., Ostrowski, M., Panny, S., Panter, M., Parsons, D., Peron, G., Poireau, V., Prokhorov, D., Prokoph, H., Puehlhofer, G., Punch, M., Quirrenbach, A., Reichherzer, P., Reimer, A., Reimer, O., Renaud, M., Rieger, F., Romoli, C., Rowell, G., Rudak, B., Ricarte, H. Rueda, Velasco, E. Ruiz, Sahakian, V., Sailer, S., Salzmann, H., Sanchez, D., Santangelo, A., Sasaki, M., Schuessler, F., Schutte, H., Schwanke, U., Senniappan, M., Shapopi, J., Simoni, R., Sol, H., Specovius, A., Spencer, S., Steenkamp, R., Steinmassl, S., Sun, L., Takahashi, T., Tanaka, T., Terrier, R., Tsuji, N., Uchiyama, Y., van Eldik, C., van Soelen, B., Veh, J., Venter, C., Vink, J., Wagner, S., White, R., Wierzcholska, A., Wong, Y. W., Zacharias, M., Zargaryan, D., Zdziarski, A., Zech, A., Zhu, S., Zouari, S., Zywucka, N., Moritani, Y., and Torres, D. F.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The results of gamma-ray observations of the binary system HESS J0632+057 collected during 450 hours over 15 years, between 2004 and 2019, are presented. Data taken with the atmospheric Cherenkov telescopes H.E.S.S., MAGIC, and VERITAS at energies above 350 GeV were used together with observations at X-ray energies obtained with Swift-XRT, Chandra, XMM-Newton, NuSTAR, and Suzaku. Some of these observations were accompanied by measurements of the H{\alpha} emission line. A significant detection of the modulation of the VHE gamma-ray fluxes with a period of 316.7+-4.4 days is reported, consistent with the period of 317.3+-0.7 days obtained with a refined analysis of X-ray data. The analysis of data of four orbital cycles with dense observational coverage reveals short timescale variability, with flux-decay timescales of less than 20 days at very high energies. Flux variations observed over the time scale of several years indicate orbit-to-orbit variability. The analysis confirms the previously reported correlation of X-ray and gamma-ray emission from the system at very high significance, but can not find any correlation of optical H{\alpha} parameters with X-ray or gamma-ray energy fluxes in simultaneous observations. The key finding is that the emission of HESS J0632+057 in the X-ray and gamma-ray energy bands is highly variable on different time scales. The ratio of gamma-ray to X-ray flux shows the equality or even dominance of the gamma-ray energy range. This wealth of new data is interpreted taking into account the insufficient knowledge of the ephemeris of the system, and discussed in the context of results reported on other gamma-ray binary systems., Comment: Accepted for publication by The Astrophysical Journal

Published
2021
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11. VERITAS contributions to the 37th International Cosmic Ray Conference

Author

Adams, C. B., Archer, A., Benbow, W., Brill, A., Buckley, J. H., Capasso, M., Christiansen, J. L., Chromey, A. J., Errando, M., Falcone, A., Farrell, K. A., Feng, Q., Foote, G. M., Fortson, L., Furniss, A., Gent, A., Gillanders, G. H., Giuri, C., Gueta, O., Hanna, D., Hervet, O., Holder, J., Hona, B., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kleiner, T. K., Kumar, S., Lang, M. J., Lundy, M., Maier, G., McGrath, C. E, Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Patel, S. R., Patel, S., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Roache, E., Ryan, J. L., Sadeh, I., Santander, M., Sembroski, G. H., Shang, R., Tak, D., Vassiliev, V. V., Weinstein, A., Williams, D. A., and Williamson, T. J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Compilation of papers presented by the VERITAS Collaboration at the 37th International Cosmic Ray Conference (ICRC), held July 12 through July 23, 2021 (online) in Berlin, Germany., Comment: html page. 2021 ICRC, Berlin, Germany

Published
2021

12. An Archival Search for Neutron-Star Mergers in Gravitational Waves and Very-High-Energy Gamma Rays

Author

Adams, C. B., Benbow, W., Brill, A., Buckley, J. H., Capasso, M., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Errando, M., Falcone, A., Farrell, K. A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Giuri, C., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Kumar, S., Lang, M. J., Lundy, M., Maier, G., McGrath, C. E, Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Park, N., Patel, S., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Roache, E., Ryan, J. L., Santander, M., Sembroski, G. H., Shang, R., Weinstein, A., Williams, D. A., Williamson, T. J., Bartos, I., Corley, K. R., Márka, S., Márka, Z., and Veske, D.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The recent discovery of electromagnetic signals in coincidence with neutron-star mergers has solidified the importance of multimessenger campaigns in studying the most energetic astrophysical events. Pioneering multimessenger observatories, such as LIGO/Virgo and IceCube, record many candidate signals below the detection significance threshold. These sub-threshold event candidates are promising targets for multimessenger studies, as the information provided by them may, when combined with contemporaneous gamma-ray observations, lead to significant detections. Here we describe a new method that uses such candidates to search for transient events using archival very-high-energy gamma-ray data from imaging atmospheric Cherenkov telescopes (IACTs). We demonstrate the application of this method to sub-threshold binary neutron star (BNS) merger candidates identified in Advanced LIGO's first observing run. We identify eight hours of archival VERITAS observations coincident with seven BNS merger candidates and search them for TeV emission. No gamma-ray emission is detected; we calculate upper limits on the integral flux and compare them to a short gamma-ray burst model. We anticipate this search method to serve as a starting point for IACT searches with future LIGO/Virgo data releases as well as in other sub-threshold studies for multimessenger transients, such as IceCube neutrinos. Furthermore, it can be deployed immediately with other current-generation IACTs, and has the potential for real-time use that places minimal burden on experimental operations. Lastly, this method may serve as a pilot for studies with the Cherenkov Telescope Array, which has the potential to observe even larger fields of view in its divergent pointing mode.

Published
2021
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13. VERITAS Observations of the Galactic Center Region at Multi-TeV Gamma-Ray Energies

Author

Adams, C. B., Benbow, W., Brill, A., Brose, R., Buchovecky, M., Capasso, M., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Errando, M., Falcone, A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Gillanders, G. H., Giuri, C., Hanna, D., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Jin, W., Kaaret, P., Kelley-Hoskins, N., Kertzman, M., Kieda, D., Krennrich, F., Kumar, S., Lang, M. J., Lundy, M., Maier, G., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Ryan, J. L., Santander, M., Schlenstedt, S., Sembroski, G. H., Shang, R., Stevenson, B., Wakely, S. P., Weinstein, A., and Williams, D. A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The Galactic Center (GC) region hosts a variety of powerful astronomical sources and rare astrophysical processes that emit a large flux of non-thermal radiation. The inner 375 pc x 600 pc region, called the Central Molecular Zone, is home to the supermassive black hole Sagittarius A*, massive cloud complexes, and particle accelerators such as supernova remnants. We present the results of our improved analysis of the very-high-energy (VHE) gamma-ray emission above 2 TeV from the GC using 125 hours of data taken with the VERITAS imaging-atmospheric Cherenkov telescope between 2010 and 2018. The central source VER J1745-290, consistent with the position of Sagittarius A*, is detected at a significance of 38 standard deviations above the background level $(38\sigma)$, and we report its spectrum and light curve. Its differential spectrum is consistent with a power law with exponential cutoff, with a spectral index of $2.12^{+0.22}_{-0.17}$, a flux normalization at 5.3 TeV of $1.27^{+0.22}_{-0.23}\times 10^{-13}$ TeV-1 cm-2 s-1, and cutoff energy of $10.0^{+4.0}_{-2.0}$ TeV. We also present results on the diffuse emission near the GC, obtained by combining data from multiple regions along the GC ridge which yield a cumulative significance of $9.5\sigma$. The diffuse GC ridge spectrum is best fit by a power law with a hard index of 2.19 $\pm$ 0.20, showing no evidence of a cutoff up to 40 TeV. This strengthens the evidence for a potential accelerator of PeV cosmic rays being present in the GC. We also provide spectra of the other sources in our field of view with significant detections, composite supernova remnant G0.9+0.1 and HESS J1746-285., Comment: 19 pages, 8 figures, Accepted for publication in Astrophysical Journal

Published
2021
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14. Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Author

Consortium, The Cherenkov Telescope Array, Abdalla, H., Abe, H., Acero, F., Acharyya, A., Adam, R., Agudo, I., Aguirre-Santaella, A., Alfaro, R., Alfaro, J., Alispach, C., Aloisio, R., B, R. Alves, Amati, L., Amato, E., Ambrosi, G., Angüner, E. O., Araudo, A., Armstrong, T., Arqueros, F., Arrabito, L., Asano, K., Ascasíbar, Y., Ashley, M., Backes, M., Balazs, C., Balbo, M., Balmaverde, B., Larriva, A. Baquero, Martins, V. Barbosa, Barkov, M., Baroncelli, L., de Almeida, U. Barres, Barrio, J. A., Batista, P., Becerra, J., Becherini, Y., Beck, G., Tjus, J. Becker, Belmont, R., Benbow, W., Bernardini, E., Berti, A., Berton, M., Bertucci, B., Beshley, V., Bi, B., Biasuzzi, B., Biland, A., Bissaldi, E., Biteau, J., Blanch, O., Bocchino, F., Boisson, C., Bolmont, J., Bonanno, G., Arbeletche, L. Bonneau, Bonnoli, G., Bordas, P., Bottacini, E., Böttcher, M., Bozhilov, V., Bregeon, J., Brill, A., Brown, A. M., Bruno, P., Bruno, A., Bulgarelli, A., Burton, M., Buscemi, M., Caccianiga, A., Cameron, R., Capasso, M., Caprai, M., Caproni, A., Capuzzo-Dolcetta, R., Caraveo, P., Carosi, R., Carosi, A., Casanova, S., Cascone, E., Cauz, D., Cerny, K., Cerruti, M., Chadwick, P., Chaty, S., Chen, A., Chernyakova, M., Chiaro, G., Chiavassa, A., Chytka, L., Conforti, V., Conte, F., Contreras, J. L., Coronado-Blazquez, J., Cortina, J., Costa, A., Costantini, H., Covino, S., Cristofari, P., Cuevas, O., D'Ammando, F., Daniel, M. K., Davies, J., Dazzi, F., De Angelis, A., de Lavergne, M. de Bony, De Caprio, V., Anjos, R. de Cássia dos, Pino, E. M. de Gouveia Dal, De Lotto, B., De Martino, D., de Naurois, M., Wilhelmi, E. de Oña, De Palma, F., de Souza, V., Delgado, C., Della Ceca, R., della Volpe, D., Depaoli, D., Di Girolamo, T., Di Pierro, F., Díaz, C., Díaz-Bahamondes, C., Diebold, S., Djannati-Ataï, A., Dmytriiev, A., Domínguez, A., Donini, A., Dorner, D., Doro, M., Dournaux, J., Dwarkadas, V. V., Ebr, J., Eckner, C., Einecke, S., Ekoume, T. R. N., Elsässer, D., Emery, G., Evoli, C., Fairbairn, M., Falceta-Goncalves, D., Fegan, S., Feng, Q., Ferrand, G., Fiandrini, E., Fiasson, A., Fioretti, V., Foffano, L., Fonseca, M. V., Font, L., Fontaine, G., Franco, F. J., Coromina, L. Freixas, Fukami, S., Fukazawa, Y., Fukui, Y., Gaggero, D., Galanti, G., Gammaldi, V., Garcia, E., Garczarczyk, M., Gascon, D., Gaug, M., Gent, A., Ghalumyan, A., Ghirlanda, G., Gianotti, F., Giarrusso, M., Giavitto, G., Giglietto, N., Giordano, F., Glicenstein, J., Goldoni, P., González, J. M., Gourgouliatos, K., Grabarczyk, T., Grandi, P., Granot, J., Grasso, D., Green, J., Grube, J., Gueta, O., Gunji, S., Halim, A., Harvey, M., Collado, T. Hassan, Hayashi, K., Heller, M., Cadena, S. Hernández, Hervet, O., Hinton, J., Hiroshima, N., Hnatyk, B., Hnatyk, R., Hoffmann, D., Hofmann, W., Holder, J., Horan, D., Hörandel, J., Horvath, P., Hovatta, T., Hrabovsky, M., Hrupec, D., Hughes, G., Hütten, M., Iarlori, M., Inada, T., Inoue, S., Insolia, A., Ionica, M., Iori, M., Jacquemont, M., Jamrozy, M., Janecek, P., Martínez, I. Jiménez, Jin, W., Jung-Richardt, I., Jurysek, J., Kaaret, P., Karas, V., Karkar, S., Kawanaka, N., Kerszberg, D., Khélifi, B., Kissmann, R., Knödlseder, J., Kobayashi, Y., Kohri, K., Komin, N., Kong, A., Kosack, K., Kubo, H., La Palombara, N., Lamanna, G., Lang, R. G., Lapington, J., Laporte, P., Lemoine-Goumard, M., Lenain, J., Leone, F., Leto, G., Leuschner, F., Lindfors, E., Lloyd, S., Lohse, T., Lombardi, S., Longo, F., Lopez, A., López, M., López-Coto, R., Loporchio, S., Lucarelli, F., Luque-Escamilla, P. L., Lyard, E., Maggio, C., Majczyna, A., Makariev, M., Mallamaci, M., Mandat, D., Maneva, G., Manganaro, M., Manicò, G., Marcowith, A., Marculewicz, M., Markoff, S., Marquez, P., Martí, J., Martinez, O., Martínez, M., Martínez, G., Martínez-Huerta, H., Maurin, G., Mazin, D., Mbarubucyeye, J. D., Miranda, D. Medina, Meyer, M., Micanovic, S., Miener, T., Minev, M., Miranda, J. M., Mitchell, A., Mizuno, T., Mode, B., Moderski, R., Mohrmann, L., Molina, E., Montaruli, T., Moralejo, A., Merino, J. Morales, Morcuende-Parrilla, D., Morselli, A., Mukherjee, R., Mundell, C., Murach, T., Muraishi, H., Nagai, A., Nakamori, T., Nemmen, R., Niemiec, J., Nieto, D., Nievas, M., Nikołajuk, M., Nishijima, K., Noda, K., Nosek, D., Nozaki, S., O'Brien, P., Ohira, Y., Ohishi, M., Oka, T., Ong, R. A., Orienti, M., Orito, R., Orlandini, M., Orlando, E., Osborne, J. P., Ostrowski, M., Oya, I., Pagliaro, A., Palatka, M., Paneque, D., Pantaleo, F. R., Paredes, J. M., Parmiggiani, N., Patricelli, B., Pavletić, L., Pe'er, A., Pech, M., Pecimotika, M., Peresano, M., Persic, M., Petruk, O., Pfrang, K., Piatteli, P., Pietropaolo, E., Pillera, R., Pilszyk, B., Pimentel, D., Pintore, F., Pita, S., Pohl, M., Poireau, V., Polo, M., Prado, R. R., Prast, J., Principe, G., Produit, N., Prokoph, H., Prouza, M., Przybilski, H., Pueschel, E., Pühlhofer, G., Pumo, M. L., Punch, M., Queiroz, F., Quirrenbach, A., Rando, R., Razzaque, S., Rebert, E., Recchia, S., Reichherzer, P., Reimer, O., Reimer, A., Renier, Y., Reposeur, T., Rhode, W., Ribeiro, D., Ribó, M., Richtler, T., Rico, J., Rieger, F., Rizi, V., Rodriguez, J., Fernandez, G. Rodriguez, Ramirez, J. C. Rodriguez, Vázquez, J. J. Rodríguez, Romano, P., Romeo, G., Roncadelli, M., Rosado, J., de Leon, A. Rosales, Rowell, G., Rudak, B., Rujopakarn, W., Russo, F., Sadeh, I., Saha, L., Saito, T., Greus, F. Salesa, Sanchez, D., Sánchez-Conde, M., Sangiorgi, P., Sano, H., Santander, M., Santos, E. M., Sanuy, A., Sarkar, S., Saturni, F. G., Sawangwit, U., Scherer, A., Schleicher, B., Schovanek, P., Schussler, F., Schwanke, U., Sciacca, E., Scuderi, S., Arroyo, M. Seglar, Sergijenko, O., Servillat, M., Seweryn, K., Shalchi, A., Sharma, P., Shellard, R. C., Siejkowski, H., Sinha, A., Sliusar, V., Slowikowska, A., Sokolenko, A., Sol, H., Specovius, A., Spencer, S., Spiga, D., Stamerra, A., Stanič, S., Starling, R., Stolarczyk, T., Straumann, U., Strišković, J., Suda, Y., Świerk, P., Tagliaferri, G., Takahashi, H., Takahashi, M., Tavecchio, F., Taylor, L., Tejedor, L. A., Temnikov, P., Terrier, R., Terzic, T., Testa, V., Tian, W., Tibaldo, L., Tonev, D., Torres, D. F., Torresi, E., Tosti, L., Tothill, N., Tovmassian, G., Travnicek, P., Truzzi, S., Tuossenel, F., Umana, G., Vacula, M., Vagelli, V., Valentino, M., Vallage, B., Vallania, P., van Eldik, C., Varner, G. S., Vassiliev, V., Acosta, M. Vázquez, Vecchi, M., Veh, J., Vercellone, S., Vergani, S., Verguilov, V., Vettolani, G. P., Viana, A., Vigorito, C. F., Vitale, V., Vorobiov, S., Vovk, I., Vuillaume, T., Wagner, S. J., Walter, R., Watson, J., White, M., White, R., Wiemann, R., Wierzcholska, A., Will, M., Williams, D. A., Wischnewski, R., Wolter, A., Yamazaki, R., Yanagita, S., Yang, L., Yoshikoshi, T., Zacharias, M., Zaharijas, G., Zaric, D., Zavrtanik, M., Zavrtanik, D., Zech, A., Zechlin, H., Zhdanov, V. I., and Živec, M.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for $\gamma$-ray astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental physics. We study some of the salient areas of $\gamma$-ray cosmology that can be explored as part of the Key Science Projects of CTA, through simulated observations of active galactic nuclei (AGN) and of their relativistic jets. Observations of AGN with CTA will enable a measurement of $\gamma$-ray absorption on the extragalactic background light with a statistical uncertainty below 15% up to a redshift $z=2$ and to constrain or detect $\gamma$-ray halos up to intergalactic-magnetic-field strengths of at least 0.3pG. Extragalactic observations with CTA also show promising potential to probe physics beyond the Standard Model. The best limits on Lorentz invariance violation from $\gamma$-ray astronomy will be improved by a factor of at least two to three. CTA will also probe the parameter space in which axion-like particles could constitute a significant fraction, if not all, of dark matter. We conclude on the synergies between CTA and other upcoming facilities that will foster the growth of $\gamma$-ray cosmology., Comment: 71 pages (including affiliations and references), 13 figures, 6 tables. Accepted in JCAP; matches published version. Corresponding authors: Jonathan Biteau, Julien Lefaucheur, Humberto Martinez-Huerta, Manuel Meyer, Santiago Pita, Ievgen Vovk

Published
2020
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15. Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre

Author

Consortium, The Cherenkov Telescope Array, Acharyya, A., Adam, R., Adams, C., Agudo, I., Aguirre-Santaella, A., Alfaro, R., Alfaro, J., Alispach, C., Aloisio, R., Batista, R. Alves, Amati, L., Ambrosi, G., Angüner, E. O., Antonelli, L. A., Aramo, C., Araudo, A., Armstrong, T., Arqueros, F., Asano, K., Ascasíbar, Y., Ashley, M., Balazs, C., Ballester, O., Larriva, A. Baquero, Martins, V. Barbosa, Barkov, M., de Almeida, U. Barres, Barrio, J. A., Bastieri, D., Becerra, J., Beck, G., Tjus, J. Becker, Benbow, W., Benito, M., Berge, D., Bernardini, E., Bernlöhr, K., Berti, A., Bertucci, B., Beshley, V., Biasuzzi, B., Biland, A., Bissaldi, E., Biteau, J., Blanch, O., Blazek, J., Bocchino, F., Boisson, C., Arbeletche, L. Bonneau, Bordas, P., Bosnjak, Z., Bottacini, E., Bozhilov, V., Bregeon, J., Brill, A., Bringmann, T., Brown, A. M., Brun, P., Brun, F., Bruno, P., Bulgarelli, A., Burton, M., Burtovoi, A., Buscemi, M., Cameron, R., Capasso, M., Caproni, A., Capuzzo-Dolcetta, R., Caraveo, P., Carosi, R., Carosi, A., Casanova, S., Cascone, E., Cassol, F., Catalani, F., Cauz, D., Cerruti, M., Chadwick, P., Chaty, S., Chen, A., Chernyakova, M., Chiaro, G., Chiavassa, A., Chikawa, M., Chudoba, J., Çolak, M., Conforti, V., Coniglione, R., Conte, F., Contreras, J. L., Coronado-Blazquez, J., Costa, A., Costantini, H., Cotter, G., Cristofari, P., D'Aì, A., D'Ammando, F., Damone, L. A., Daniel, M. K., Dazzi, F., De Angelis, A., De Caprio, V., Anjos, R. de Cássia dos, Pino, E. M. de Gouveia Dal, De Lotto, B., De Martino, D., Wilhelmi, E. de Oña, De Palma, F., de Souza, V., Delgado, C., Giler, A. G. Delgado, della Volpe, D., Depaoli, D., Di Girolamo, T., Di Pierro, F., Di Venere, L., Diebold, S., Dmytriiev, A., Domínguez, A., Donini, A., Doro, M., Ebr, J., Eckner, C., Edwards, T. D. P., Ekoume, T. R. N., Elsässer, D., Evoli, C., Falceta-Goncalves, D., Fedorova, E., Fegan, S., Feng, Q., Ferrand, G., Ferrara, G., Fiandrini, E., Fiasson, A., Filipovic, M., Fioretti, V., Fiori, M., Foffano, L., Fontaine, G., Fornieri, O., Franco, F. J., Fukami, S., Fukui, Y., Gaggero, D., Galaz, G., Gammaldi, V., Garcia, E., Garczarczyk, M., Gascon, D., Gent, A., Ghalumyan, A., Gianotti, F., Giarrusso, M., Giavitto, G., Giglietto, N., Giordano, F., Giuliani, A., Glicenstein, J., Gnatyk, R., Goldoni, P., González, M. M., Gourgouliatos, K., Granot, J., Grasso, D., Green, J., Grillo, A., Gueta, O., Gunji, S., Halim, A., Hassan, T., Heller, M., Cadena, S. Hernández, Hiroshima, N., Hnatyk, B., Hofmann, W., Holder, J., Horan, D., Hörandel, J., Horvath, P., Hovatta, T., Hrabovsky, M., Hrupec, D., Hughes, G., Humensky, T. B., Hütten, M., Iarlori, M., Inada, T., Inoue, S., Iocco, F., Iori, M., Jamrozy, M., Janecek, P., Jin, W., Jouvin, L., Jurysek, J., Karukes, E., Katarzyński, K., Kazanas, D., Kerszberg, D., Kherlakian, M. C., Kissmann, R., Knödlseder, J., Kobayashi, Y., Kohri, K., Komin, N., Kubo, H., Kushida, J., Lamanna, G., Lapington, J., Laporte, P., de Oliveira, M. A. Leigui, Lenain, J., Leone, F., Leto, G., Lindfors, E., Lohse, T., Lombardi, S., Longo, F., Lopez, A., López, M., López-Coto, R., Loporchio, S., Luque-Escamilla, P. L., Mach, E., Maggio, C., Maier, G., Mallamaci, M., de Almeida, R. Malta Nunes, Mandat, D., Manganaro, M., Mangano, S., Manicò, G., Marculewicz, M., Mariotti, M., Markoff, S., Marquez, P., Martí, J., Martinez, O., Martínez, M., Martínez, G., Martínez-Huerta, H., Maurin, G., Mazin, D., Mbarubucyeye, J. D., Miranda, D. Medina, Meyer, M., Miceli, M., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Mizuno, T., Mode, B., Moderski, R., Mohrmann, L., Molina, E., Montaruli, T., Moralejo, A., Morcuende-Parrilla, D., Morselli, A., Mukherjee, R., Mundell, C., Nagai, A., Nakamori, T., Nemmen, R., Niemiec, J., Nieto, D., Nikołajuk, M., Ninci, D., Noda, K., Nosek, D., Nozaki, S., Ohira, Y., Ohishi, M., Ohtani, Y., Oka, T., Okumura, A., Ong, R. A., Orienti, M., Orito, R., Orlandini, M., Orlando, S., Orlando, E., Ostrowski, M., Oya, I., Pagano, I., Pagliaro, A., Palatiello, M., Pantaleo, F. R., Paredes, J. M., Pareschi, G., Parmiggiani, N., Patricelli, B., Pavletić, L., Pe'er, A., Pecimotika, M., Pérez-Romero, J., Persic, M., Petruk, O., Pfrang, K., Piano, G., Piatteli, P., Pietropaolo, E., Pillera, R., Pilszyk, B., Pintore, F., Pohl, M., Poireau, V., Prado, R. R., Prandini, E., Prast, J., Principe, G., Prokoph, H., Prouza, M., Przybilski, H., Pühlhofer, G., Pumo, M. L., Queiroz, F., Quirrenbach, A., Rainò, S., Rando, R., Razzaque, S., Recchia, S., Reimer, O., Reisenegger, A., Renier, Y., Rhode, W., Ribeiro, D., Ribó, M., Richtler, T., Rico, J., Rieger, F., Rinchiuso, L., Rizi, V., Rodriguez, J., Fernandez, G. Rodriguez, Ramirez, J. C. Rodriguez, Rojas, G., Romano, P., Romeo, G., Rosado, J., Rowell, G., Rudak, B., Russo, F., Sadeh, I., Hatlen, E. Sæther, Safi-Harb, S., Greus, F. Salesa, Salina, G., Sanchez, D., Sánchez-Conde, M., Sangiorgi, P., Sano, H., Santander, M., Santos, E. M., Santos-Lima, R., Sanuy, A., Sarkar, S., Saturni, F. G., Sawangwit, U., Schussler, F., Schwanke, U., Sciacca, E., Scuderi, S., Seglar-Arroyo, M., Sergijenko, O., Servillat, M., Seweryn, K., Shalchi, A., Sharma, P., Shellard, R. C., Siejkowski, H., Silk, J., Siqueira, C., Sliusar, V., Słowikowska, A., Sokolenko, A., Sol, H., Spencer, S., Stamerra, A., Stanič, S., Starling, R., Stolarczyk, T., Straumann, U., Strišković, J., Suda, Y., Suomijarvi, T., Świerk, P., Tavecchio, F., Taylor, L., Tejedor, L. A., Teshima, M., Testa, V., Tibaldo, L., Peixoto, C. J. Todero, Tokanai, F., Tonev, D., Tosti, G., Tosti, L., Tothill, N., Truzzi, S., Travnicek, P., Vagelli, V., Vallage, B., Vallania, P., van Eldik, C., Vandenbroucke, J., Varner, G. S., Vassiliev, V., Acosta, M. Vázquez, Vecchi, M., Ventura, S., Vercellone, S., Vergani, S., Verna, G., Viana, A., Vigorito, C. F., Vink, J., Vitale, V., Vorobiov, S., Vovk, I., Vuillaume, T., Wagner, S. J., Walter, R., Watson, J., Weniger, C., White, R., White, M., Wiemann, R., Wierzcholska, A., Will, M., Williams, D. A., Wischnewski, R., Yanagita, S., Yang, L., Yoshikoshi, T., Zacharias, M., Zaharijas, G., Zakaria, A. A., Zampieri, L., Zanin, R., Zaric, D., Zavrtanik, M., Zavrtanik, D., Zdziarski, A. A., Zech, A., Zechlin, H., Zhdanov, V. I., and Živec, M.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Phenomenology
Abstract

We provide an updated assessment of the power of the Cherenkov Telescope Array (CTA) to search for thermally produced dark matter at the TeV scale, via the associated gamma-ray signal from pair-annihilating dark matter particles in the region around the Galactic centre. We find that CTA will open a new window of discovery potential, significantly extending the range of robustly testable models given a standard cuspy profile of the dark matter density distribution. Importantly, even for a cored profile, the projected sensitivity of CTA will be sufficient to probe various well-motivated models of thermally produced dark matter at the TeV scale. This is due to CTA's unprecedented sensitivity, angular and energy resolutions, and the planned observational strategy. The survey of the inner Galaxy will cover a much larger region than corresponding previous observational campaigns with imaging atmospheric Cherenkov telescopes. CTA will map with unprecedented precision the large-scale diffuse emission in high-energy gamma rays, constituting a background for dark matter searches for which we adopt state-of-the-art models based on current data. Throughout our analysis, we use up-to-date event reconstruction Monte Carlo tools developed by the CTA consortium, and pay special attention to quantifying the level of instrumental systematic uncertainties, as well as background template systematic errors, required to probe thermally produced dark matter at these energies. "Full likelihood tables complementing our analysis are provided here [ https://doi.org/10.5281/zenodo.4057987 ]", Comment: 68 pages (including references) and 26 figures; text identical to the version published in JCAP

Published
2020
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16. Demonstration of stellar intensity interferometry with the four VERITAS telescopes

Author

Abeysekara, A. U., Benbow, W., Brill, A., Buckley, J. H., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Davis, J., Falcone, A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Giuri, C., Gueta, O., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Kaaret, P., Kertzman, M., Kieda, D., Krennrich, F., Kumar, S., LeBohec, T., Lin, T. T. Y., Lundy, M., Maier, G., Matthews, N., Moriarty, P., Nievas-Rosillo, R. Mukherjee M., O'Brien, S., Ong, R. A., Otte, A. N., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Ryan, J. L., Santander, M., Sembroski, G. H., Wakely, S. P., Weinstein, A., Wilcox, P., Williams, D. A., and Williamson, T. J

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

High angular resolution observations at optical wavelengths provide valuable insights in stellar astrophysics, directly measuring fundamental stellar parameters, and probing stellar atmospheres, circumstellar disks, elongation of rapidly rotating stars, and pulsations of Cepheid variable stars. The angular size of most stars are of order one milli-arcsecond or less, and to spatially resolve stellar disks and features at this scale requires an optical interferometer using an array of telescopes with baselines on the order of hundreds of meters. We report on the successful implementation of a stellar intensity interferometry system developed for the four VERITAS imaging atmospheric-Cherenkov telescopes. The system was used to measure the angular diameter of the two sub-mas stars $\beta$ Canis Majoris and $\epsilon$ Orionis with a precision better than 5%. The system utilizes an off-line approach where starlight intensity fluctuations recorded at each telescope are correlated post-observation. The technique can be readily scaled onto tens to hundreds of telescopes, providing a capability that has proven technically challenging to current generation optical amplitude interferometry observatories. This work demonstrates the feasibility of performing astrophysical measurements with imaging atmospheric-Cherenkov telescope arrays as intensity interferometers and the promise for integrating an intensity interferometry system within future observatories such as the Cherenkov Telescope Array., Comment: Accepted for publication in Nature Astronomy (2020)

Published
2020
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17. VERITAS Discovery of VHE Emission from the Radio Galaxy 3C 264: A Multi-Wavelength Study

Author

Archer, A., Benbow, W., Bird, R., Brill, A., Buchovecky, M., Buckley, J. H., Carini, M. T., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Errando, M., Falcone, A., Feng, Q., Fortin, P., Fortson, L., Furniss, A., Gent, A., Georganopoulos, M., Gillanders, G. H., Giuri, C., Gueta, O., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Kaaret, P., Kertzman, M., Kieda, D., Krennrich, F., Lang, M. J., Lin, T. T. Y., Lister, M. L., Lundy, M., Maier, G., Meyer, E. T., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Ramirez, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Rulten, C., Ryan, J. L., Sadun, A., Santander, M., Scott, S. S., Sembroski, G. H., Shahinyan, K., Shang, R., Stevenson, B., Vassiliev, V. V., Wakely, S. P., Weinstein, A., Wilcox, P., Wilhelm, A., Williams, D. A., and Williamson, T. J

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The radio source 3C 264, hosted by the giant elliptical galaxy NGC 3862, was observed with VERITAS between February 2017 and May 2019. These deep observations resulted in the discovery of very-high-energy (VHE; E $>100$ GeV) $\gamma$-ray emission from this active galaxy. An analysis of $\sim$57 hours of quality-selected live time yields a detection at the position of the source, corresponding to a statistical significance of 7.8 standard deviations above background. The observed VHE flux is variable on monthly time scales, with an elevated flux seen in 2018 observations. The VHE emission during this elevated state is well-characterized by a power-law spectrum with a photon index $\Gamma = 2.20 \pm 0.27$ and flux F($>315$ GeV) = ($7.6\pm 1.2_{\mathrm stat} \pm 2.3_{\mathrm syst})\times 10^{-13}$ cm$^{-2}$ s$^{-1}$, or approximately 0.7% of the Crab Nebula flux above the same threshold. 3C 264 ($z = 0.0217$) is the most distant radio galaxy detected at VHE, and the elevated state is thought to be similar to that of the famously outbursting jet in M 87. Consequently, extensive contemporaneous multi-wavelength data were acquired in 2018 at the time of the VHE high state. An analysis of these data, including VLBA, VLA, HST, Chandra and Swift observations in addition to the VERITAS data, is presented, along with a discussion of the resulting spectral energy distribution., Comment: 19 pages, 11 figures, Accepted for publication in Astrophysical Journal

Published
2020
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18. Evidence for proton acceleration up to TeV energies based on VERITAS and Fermi-LAT observations of the Cas A SNR

Author

Abeysekara, A. U., Archer, A., Benbow, W., Bird, R., Brose, R., Buchovecky, M., Buckley, J. H., Chromey, A. J., Cui, W., Daniel, M. K., Das, S., Dwarkadas, V. V., Falcone, A., Feng, Q., Finley, J. P., Fortson, L., Gent, A., Gillanders, G. H., Giuri, C., Gueta, O., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Kaaret, P., Kar, P., Kelley-Hoskins, N., Kertzman, M., Kieda, D., Krause, M., Krennrich, F., Kumar, S., Lang, M. J., Maier, G., Moriarty, P., Mukherjee, R., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Park, N., Petrashyk, A., Pfrang, K., Pohl, M., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Richards, G. T., Roache, E., Sadeh, I., Santander, M., Sembroski, G. H., Shahinyan, K., Sushch, I., Weinstein, A., Wilcox, P., Wilhelm, A., Williams, D. A., Williamson, T. J, Zitzer, B., and Ghiotto, A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present a study of $\gamma$-ray emission from the core-collapse supernova remnant Cas~A in the energy range from 0.1GeV to 10TeV. We used 65 hours of VERITAS data to cover 200 GeV - 10 TeV, and 10.8 years of \textit{Fermi}-LAT data to cover 0.1-500 GeV. The spectral analysis of \textit{Fermi}-LAT data shows a significant spectral curvature around $1.3 \pm 0.4_{stat}$ GeV that is consistent with the expected spectrum from pion decay. Above this energy, the joint spectrum from \textit{Fermi}-LAT and VERITAS deviates significantly from a simple power-law, and is best described by a power-law with spectral index of $2.17\pm 0.02_{stat}$ with a cut-off energy of $2.3 \pm 0.5_{stat}$ TeV. These results, along with radio, X-ray and $\gamma$-ray data, are interpreted in the context of leptonic and hadronic models. Assuming a one-zone model, we exclude a purely leptonic scenario and conclude that proton acceleration up to at least 6 TeV is required to explain the observed $\gamma$-ray spectrum. From modeling of the entire multi-wavelength spectrum, a minimum magnetic field inside the remnant of $B_{\mathrm{min}}\approx150\,\mathrm{\mu G}$ is deduced., Comment: 33 pages, 9 Figures, 6 Tables

Published
2020
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19. A decade of multi-wavelength observations of the TeV blazar 1ES 1215+303: Extreme shift of the synchrotron peak frequency and long-term optical-gamma-ray flux increase

Author

Valverde, Janeth, Horan, Deirdre, Bernard, Denis, Fegan, Stephen, Abeysekara, A. U., Archer, A., Benbow, W., Bird, R., Brill, A., Brose, R., Buchovecky, M., Buckley, J. H., Christiansen, J. L., Cui, W., Falcone, A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Gillanders, G. H., Giuri, C., Gueta, O., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Kaaret, P., Kelley-Hoskins, N., Kertzman, M., Kieda, D., Krause, M., Krennrich, F., Lang, M. J., Maier, G., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Park, N., Petrashyk, A., Pfrang, K., Pichel, A., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Sadeh, I., Santander, M., Scott, S. S., Sembroski, G. H., Shahinyan, K., Shang, R., Sushch, I., Vassiliev, V. V., Weinstein, A., Wells, R. M., Wilcox, P., Wilhelm, A., Williams, D. A., Williamson, T. J, Noto, Giuliana, Edwards, P. G., Piner, B. G., Ramazani, V. Fallah, Hovatta, T., Jormanainen, J., Lindfors, E., Nilsson, K., Takalo, L., Kovalev, Y. Y., Lister, M. L., Pushkarev, A. B., Savolainen, T., Kiehlmann, S., Max-Moerbeck, W., Readhead, A. C. S., Lähteenmäki, A., and Tornikoski, M.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Blazars are known for their variability on a wide range of timescales at all wavelengths. Most studies of TeV gamma-ray blazars focus on short timescales, especially during flares. With a decade of observations from the Fermi-LAT and VERITAS, we present an extensive study of the long-term multi-wavelength radio-to-gamma-ray flux-density variability, with the addition of a couple of short-time radio-structure and optical polarization observations of the blazar 1ES 1215+303 (z=0.130), with a focus on its gamma-ray emission from 100 MeV to 30 TeV. Multiple strong GeV gamma-ray flares, a long-term increase in the gamma-ray and optical flux baseline and a linear correlation between these two bands are observed over the ten-year period. Typical HBL behaviors are identified in the radio morphology and broadband spectrum of the source. Three stationary features in the innermost jet are resolved by VLBA at 43.1, 22.2, and 15.3 GHz. We employ a two-component synchrotron self-Compton model to describe different flux states of the source, including the epoch during which an extreme shift in energy of the synchrotron peak frequency from infrared to soft X-rays is observed., Comment: Accepted for publication in the Astrophysical Journal

Published
2020
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20. Probing the Properties of the Pulsar Wind in the Gamma-Ray Binary HESS J0632+057 with NuSTAR and VERITAS Observations

Author

Archer, A., Benbow, W., Bird, R., Brill, A., Brose, R., Buchovecky, M., Christiansen, J. L., Chromey, A. J., Cui, W., Falcone, A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Gillanders, G. H., Giuri, C., Gueta, O., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Kaaret, P., Kelley-Hoskins, N., Kertzman, M., Kieda, D., Krause, M., Lang, M. J., Maier, G., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Park, N., Petrashyk, A., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Sadeh, I., Santander, M., Schlenstedt, S., Sembroski, G. H., Sushch, I., Weinstein, A., Wilcox, P., Wilhelm, A., Williams, D. A., Williamson, T. J, Hailey, C. J., Mandel, S., and Mori, K.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

HESS J0632+057 is a gamma-ray binary composed of a compact object orbiting a Be star with a period of about $315$ days. Extensive X-ray and TeV gamma-ray observations have revealed a peculiar light curve containing two peaks, separated by a dip. We present the results of simultaneous observations in hard X-rays with NuSTAR and in TeV gamma-rays with VERITAS, performed in November and December 2017. These observations correspond to the orbital phases $\phi\approx0.22$ and $0.3$, where the fluxes are rising towards the first light-curve peak. A significant variation of the spectral index from 1.77$\pm$0.05 to 1.56$\pm$0.05 is observed in the X-ray data. The multi-wavelength spectral energy distributions (SED) derived from the observations are interpreted in terms of a leptonic model, in which the compact object is assumed to be a pulsar and non-thermal radiation is emitted by high-energy electrons accelerated at the shock formed by the collision between the stellar and pulsar wind. The results of the SED fitting show that our data can be consistently described within this scenario, and allow us to estimate the magnetization of the pulsar wind at the location of the shock formation. The constraints on the pulsar-wind magnetization provided by our results are shown to be consistent with those obtained from other systems., Comment: Accepted for publication in The Astrophysical Journal

Published
2019
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21. Measurement of the extragalactic background light spectral energy distribution with VERITAS

Author

VERITAS collaboration, Abeysekara, A. U., Archer, A., Benbow, W., Bird, R., Brill, A., Brose, R., Buchovecky, M., Christiansen, J. L., Cui, W., Daniel, M. K., Falcone, A., Feng, Q., Fernandez-Alonso, M., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Giuri, C., Gueta, O., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Johnson, C. A., Kaaret, P., Kertzman, M., Kieda, D., Krause, M., Krennrich, F., Kumar, S., Lang, M. J., Maier, G., Moriarty, P., Mukherjee, R., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Rovero, A. C., Sadeh, I., Santander, M., Sembroski, G. H., Shahinyan, K., Sushch, I., Weinstein, A., Wells, R. M., Wilcox, P., Wilhelm, A., Williams, D. A., Williamson, T. J, and Zitzer, B.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The extragalactic background light (EBL), a diffuse photon field in the optical and infrared range, is a record of radiative processes over the Universe's history. Spectral measurements of blazars at very high energies ($>$100 GeV) enable the reconstruction of the spectral energy distribution (SED) of the EBL, as the blazar spectra are modified by redshift- and energy-dependent interactions of the gamma-ray photons with the EBL. The spectra of 14 VERITAS-detected blazars are included in a new measurement of the EBL SED that is independent of EBL SED models. The resulting SED covers an EBL wavelength range of 0.56--56 $\mu$m, and is in good agreement with lower limits obtained by assuming that the EBL is entirely due to radiation from cataloged galaxies., Comment: Accepted for publication in The Astrophysical Journal

Published
2019
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22. VERITAS contributions to the 36th International Cosmic Ray Conference

Author

Abeysekara, A. U., Archer, A., Benbow, W., Bird, R., Brill, A., Brose, R., Buckley, J. H., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Das, S., Falcone, A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Gillanders, G. H., Giuri, C., Gueta, O., Hanna, D., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Kaaret, P., Kelley-Hoskins, N., Kertzman, M., Kieda, D., Krause, M., Kumar, S., Lang, M. J., Lin, T. T. Y., Lundy, M., Maier, G., Matthews, N., Moriarty, P., Mukherjee, R., Nievas-Rosillo, M., O'Brien, S., Ong, R. A., Otte, A. N., Park, N., Petrashyk, A., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Sadeh, I., Santander, M., Schlenstedt, S., Scott, S. S., Sembroski, G. H., Shang, R., Vassiliev, V. V., Wakely, S. P., Weinstein, A., Wells, R. M., Wilcox, P., Williams, D. A., and Williamson, T. J

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Compilation of papers presented by the VERITAS Collaboration at the 36th International Cosmic Ray Conference (ICRC), held July 24 through August 1, 2019 in Madison, Wisconsin., Comment: html page. 2019 ICRC, Madison, Wisconsin

Published
2019

23. Monte Carlo studies for the optimisation of the Cherenkov Telescope Array layout

Author

Acharyya, A., Agudo, I., Angüner, E. O., Alfaro, R., Alfaro, J., Alispach, C., Aloisio, R., Batista, R. Alves, Amans, J. -P., Amati, L., Amato, E., Ambrosi, G., Antonelli, L. A., Aramo, C., Armstrong, T., Arqueros, F., Arrabito, L., Asano, K., Ashkar, H., Balazs, C., Balbo, M., Balmaverde, B., Barai, P., Barbano, A., Barkov, M., de Almeida, U. Barres, Barrio, J. A., Bastieri, D., González, J. Becerra, Tjus, J. Becker, Bellizzi, L., Benbow, W., Bernardini, E., Bernardos, M. I., Bernlöhr, K., Berti, A., Berton, M., Bertucci, B., Beshley, V., Biasuzzi, B., Bigongiari, C., Bird, R., Bissaldi, E., Biteau, J., Blanch, O., Blazek, J., Boisson, C., Bonanno, G., Bonardi, A., Bonavolontà, C., Bonnoli, G., Bordas, P., Böttcher, M., Bregeon, J., Brill, A., Brown, A. M., Brügge, K., Brun, P., Bruno, P., Bulgarelli, A., Bulik, T., Burton, M., Burtovoi, A., Busetto, G., Cameron, R., Canestrari, R., Capalbi, M., Caproni, A., Capuzzo-Dolcetta, R., Caraveo, P., Caroff, S., Carosi, R., Casanova, S., Cascone, E., Cassol, F., Catalani, F., Catalano, O., Cauz, D., Cerruti, M., Chaty, S., Chen, A., Chernyakova, M., Chiaro, G., Cieślar, M., Colak, S. M., Conforti, V., Congiu, E., Contreras, J. L., Cortina, J., Costa, A., Costantini, H., Cotter, G., Cristofari, P., Cumani, P., Cusumano, G., D'Aì, A., D'Ammando, F., Dangeon, L., Da Vela, P., Dazzi, F., De Angelis, A., De Caprio, V., Anjos, R. de Cássia dos, De Frondat, F., Pino, E. M. de Gouveia Dal, De Lotto, B., De Martino, D., de Naurois, M., Wilhelmi, E. de Oña, de Palma, F., de Souza, V., Del Santo, M., Delgado, C., della Volpe, D., Di Girolamo, T., Di Pierro, F., Di Venere, L., Díaz, C., Diebold, S., Djannati-Ataï, A., Dmytriiev, A., Prester, D. Dominis, Donini, A., Dorner, D., Doro, M., Dournaux, J. -L., Ebr, J., Ekoume, T. R. N., Elsässer, D., Emery, G., Falceta-Goncalves, D., Fedorova, E., Fegan, S., Feng, Q., Ferrand, G., Fiandrini, E., Fiasson, A., Filipovic, M., Fioretti, V., Fiori, M., Flis, S., Fonseca, M. V., Fontaine, G., Coromina, L. Freixas, Fukami, S., Fukui, Y., Funk, S., Füßling, M., Gaggero, D., Galanti, G., López, R. J. Garcia, Garczarczyk, M., Gascon, D., Gasparetto, T., Gaug, M., Ghalumyan, A., Gianotti, F., Giavitto, G., Giglietto, N., Giordano, F., Giroletti, M., Gironnet, J., Glicenstein, J. -F., Gnatyk, R., Goldoni, P., González, J. M., González, M. M., Gourgouliatos, K. N., Grabarczyk, T., Granot, J., Green, D., Greenshaw, T., Grondin, M. -H., Gueta, O., Hadasch, D., Hassan, T., Hayashida, M., Heller, M., Hervet, O., Hinton, J., Hiroshima, N., Hnatyk, B., Hofmann, W., Horvath, P., Hrabovsky, M., Hrupec, D., Humensky, T. B., Hütten, M., Inada, T., Iocco, F., Ionica, M., Iori, M., Iwamura, Y., Jamrozy, M., Janecek, P., Jankowsky, D., Jean, P., Jouvin, L., Jurysek, J., Kaaret, P., Kadowaki, L. H. S., Karkar, S., Kerszberg, D., Khélifi, B., Kieda, D., Kimeswenger, S., Kluźniak, W., Knapp, J., Knödlseder, J., Kobayashi, Y., Koch, B., Kocot, J., Komin, N., Kong, A., Kowal, G., Krause, M., Kubo, H., Kushida, J., Kushwaha, P., La Parola, V., La Rosa, G., Arquillo, M. Lallena, Lang, R. G., Lapington, J., Blanc, O. Le, Lefaucheur, J., de Oliveira, M. A. Leigui, Lemoine-Goumard, M., Lenain, J. -P., Leto, G., Lico, R., Lindfors, E., Lohse, T., Lombardi, S., Longo, F., Lopez, A., López, M., Lopez-Oramas, A., López-Coto, R., Loporchio, S., Luque-Escamilla, P. L., Lyard, E., Maccarone, M. C., Mach, E., Maggio, C., Majumdar, P., Malaguti, G., Mallamaci, M., Mandat, D., Maneva, G., Manganaro, M., Mangano, S., Marculewicz, M., Mariotti, M., Martí, J., Martínez, M., Martínez, G., Martínez-Huerta, H., Masuda, S., Maxted, N., Mazin, D., Meunier, J. -L., Meyer, M., Micanovic, S., Millul, R., Minaya, I. A., Mitchell, A., Mizuno, T., Moderski, R., Mohrmann, L., Montaruli, T., Moralejo, A., Morcuende, D., Morlino, G., Morselli, A., Moulin, E., Mukherjee, R., Munar, P., Mundell, C., Murach, T., Nagai, A., Nagayoshi, T., Naito, T., Nakamori, T., Nemmen, R., Niemiec, J., Nieto, D., Rosillo, M. Nievas, Nikołajuk, M., Ninci, D., Nishijima, K., Noda, K., Nosek, D., Nöthe, M., Nozaki, S., Ohishi, M., Ohtani, Y., Okumura, A., Ong, R. A., Orienti, M., Orito, R., Ostrowski, M., Otte, N., Ou, Z., Oya, I., Pagliaro, A., Palatiello, M., Palatka, M., Paoletti, R., Paredes, J. M., Pareschi, G., Parmiggiani, N., Parsons, R. D., Patricelli, B., Pe'er, A., Pech, M., Del Campo, P. Peñil, Pérez-Romero, J., Perri, M., Persic, M., Petrucci, P. -O., Petruk, O., Pfrang, K., Piel, Q., Pietropaolo, E., Pohl, M., Polo, M., Poutanen, J., Prandini, E., Produit, N., Prokoph, H., Prouza, M., Przybilski, H., Pühlhofer, G., Punch, M., Queiroz, F., Quirrenbach, A., Rainò, S., Rando, R., Razzaque, S., Reimer, O., Renault-Tinacci, N., Renier, Y., Ribeiro, D., Ribó, M., Rico, J., Rieger, F., Rizi, V., Fernandez, G. Rodriguez, Rodriguez-Ramirez, J. C., Vázquez, J. J. Rodríguez, Romano, P., Romeo, G., Roncadelli, M., Rosado, J., Rowell, G., Rudak, B., Rugliancich, A., Rulten, C., Sadeh, I., Saha, L., Saito, T., Sakurai, S., Greus, F. Salesa, Sangiorgi, P., Sano, H., Santander, M., Santangelo, A., Santos-Lima, R., Sanuy, A., Satalecka, K., Saturni, F. G., Sawangwit, U., Schlenstedt, S., Schovanek, P., Schussler, F., Schwanke, U., Sciacca, E., Scuderi, S., Sedlaczek, K., Seglar-Arroyo, M., Sergijenko, O., Seweryn, K., Shalchi, A., Shellard, R. C., Siejkowski, H., Sillanpää, A., Sinha, A., Sironi, G., Sliusar, V., Slowikowska, A., Sol, H., Specovius, A., Spencer, S., Spengler, G., Stamerra, A., Stanič, S., Stawarz, Ł., Stefanik, S., Stolarczyk, T., Straumann, U., Suomijarvi, T., Świerk, P., Szepieniec, T., Tagliaferri, G., Tajima, H., Tam, T., Tavecchio, F., Taylor, L., Tejedor, L. A., Temnikov, P., Terzic, T., Testa, V., Tibaldo, L., Peixoto, C. J. Todero, Tokanai, F., Tomankova, L., Tonev, D., Torres, D. F., Tosti, G., Tosti, L., Tothill, N., Toussenel, F., Tovmassian, G., Travnicek, P., Trichard, C., Umana, G., Vagelli, V., Valentino, M., Vallage, B., Vallania, P., Valore, L., Vandenbroucke, J., Varner, G. S., Vasileiadis, G., Vassiliev, V., Acosta, M. Vázquez, Vecchi, M., Vercellone, S., Vergani, S., Vettolani, G. P., Viana, A., Vigorito, C. F., Vink, J., Vitale, V., Voelk, H., Vollhardt, A., Vorobiov, S., Wagner, S. J., Walter, R., Werner, F., White, R., Wierzcholska, A., Will, M., Williams, D. A., Wischnewski, R., Yang, L., Yoshida, T., Yoshikoshi, T., Zacharias, M., Zampieri, L., Zavrtanik, M., Zavrtanik, D., Zdziarski, A. A., Zech, A., Zechlin, H., Zenin, A., Zhdanov, V. I., Zimmer, S., and Zorn, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Cherenkov Telescope Array (CTA) is the major next-generation observatory for ground-based very-high-energy gamma-ray astronomy. It will improve the sensitivity of current ground-based instruments by a factor of five to twenty, depending on the energy, greatly improving both their angular and energy resolutions over four decades in energy (from 20 GeV to 300 TeV). This achievement will be possible by using tens of imaging Cherenkov telescopes of three successive sizes. They will be arranged into two arrays, one per hemisphere, located on the La Palma island (Spain) and in Paranal (Chile). We present here the optimised and final telescope arrays for both CTA sites, as well as their foreseen performance, resulting from the analysis of three different large-scale Monte Carlo productions., Comment: 48 pages, 16 figures, accepted for publication in Astroparticle Physics

Published
2019
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24. The blazar TXS 0506+056 associated with a high-energy neutrino: insights into extragalactic jets and cosmic ray acceleration

Author

Ansoldi, S., Antonelli, L. A., Arcaro, C., Baack, D., Babić, A., Banerjee, B., Bangale, P., de Almeida, U. Barres, Barrio, J. A., González, J. Becerra, Bednarek, W., Bernardini, E., Berse, R. Ch., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Carosi, R., Ceribella, G., Chatterjee, A., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Einecke, S., Elsaesser, D., Ramazani, V. Fallah, Fattorini, A., Fernández-Barral, A., Ferrara, G., Fidalgo, D., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Gallozzi, S., López, R. J. García, Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hoang, J., Hrupec, D., Inoue, S., Ishio, K., Iwamura, Y., Konno, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., López, M., Maggio, C., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Masuda, S., Mazin, D., Mielke, K., Minev, M., Miranda, J. M., Mirzoyan, R., Moralejo, A., Moreno, V., Moretti, E., Neustroev, V., Niedzwiecki, A., Rosillo, M. Nievas, Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Peñil, P., Peresano, M., Persic, M., Pfrang, K., Moroni, P. G. Prada, Prandini, E., Puljak, I., Garcia, J. R., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Tsujimoto, S., Vanzo, G., Acosta, M. Vazquez, Vovk, I., Ward, J. E., Will, M., Zarić, D., and Cerruti, Matteo

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

A neutrino with energy of $\sim$290 TeV, IceCube-170922A, was detected in coincidence with the BL Lac object TXS~0506+056 during enhanced gamma-ray activity, with chance coincidence being rejected at $\sim 3\sigma$ level. We monitored the object in the very-high-energy (VHE) band with the MAGIC telescopes for $\sim$41 hours from 1.3 to 40.4 days after the neutrino detection. Day-timescale variability is clearly resolved. We interpret the quasi-simultaneous neutrino and broadband electromagnetic observations with a novel one-zone lepto-hadronic model, based on interactions of electrons and protons co-accelerated in the jet with external photons originating from a slow-moving plasma sheath surrounding the faster jet spine. We can reproduce the multiwavelength spectra of TXS 0506+056 with neutrino rate and energy compatible with IceCube-170922A, and with plausible values for the jet power of $\sim 10^{45} - 4 \times 10^{46} {\rm erg \ s^{-1}}$. The steep spectrum observed by MAGIC is concordant with internal $\gamma\gamma$ absorption above a few tens of GeV entailed by photohadronic production of a $\sim$290 TeV neutrino, corroborating a genuine connection between the multi-messenger signals. In contrast to previous predictions of predominantly hadronic emission from neutrino sources, the gamma-rays can be mostly ascribed to inverse Compton up-scattering of external photons by accelerated electrons. The X-ray and VHE bands provide crucial constraints on the emission from both accelerated electrons and protons. We infer that the maximum energy of protons in the jet co-moving frame can be in the range $\sim 10^{14}$ to $10^{18}$ eV., Comment: 11 pages, 3 figues, 3 tables, Accepted for publication in ApJL. Major changes in the revised Version: corrected author list

Published
2018
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25. The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma rays

Author

MAGIC Collaboration, Ansoldi, S., Antonelli, L. A., Arcaro, C., Baack, D., Babić, A., Banerjee, B., Bangale, P., de Almeida, U. Barres, Barrio, J. A., González, J. Becerra, Bednarek, W., Bernardini, E., Berse, R. Ch., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Carosi, R., Ceribella, G., Chatterjee, A., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Einecke, S., Elsaesser, D., Ramazani, V. Fallah, Fattorini, A., Fernández-Barral, A., Ferrara, G., Fidalgo, D., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Gallozzi, S., López, R. J. García, Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hoang, J., Hrupec, D., Inoue, S., Ishio, K., Iwamura, Y., Konno, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., López, M., Maggio, C., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Masuda, S., Mazin, D., Mielke, K., Minev, M., Miranda, J. M., Mirzoyan, R., Moralejo, A., Moreno, V., Moretti, E., Neustroev, V., Niedzwiecki, A., Rosillo, M. Nievas, Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Penil, P., Peresano, M., Persic, M., Pfrang, K., Moroni, P. G. Prada, Prandini, E., Puljak, I., Garcia, J. R., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Tsujimoto, S., Vanzo, G., Acosta, M. Vazquez, Vovk, I., Ward, J. E., Will, M., Zarić, D., Collaboration, Fermi-LAT, Ciprini, S., Desiante, R., Collaborators, MWL, Barcewicz, S., Hovatta, T., Jormanainen, J., Takalo, L., Reinthal, R., Wierda, F., Lähteenmäki, A., Tammi, J., Tornikoski, M., Vera, R. J. C., Kiehlmann, S., Max-Moerbeck, W., and Readhead, A. C. S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The MAGIC telescopes observed S2 0109+22 in 2015 July during its flaring activity in high energy gamma rays observed by Fermi-LAT. We analyse the MAGIC data to characterise the very high energy (VHE) gamma-ray emission of S2 0109+22, which belongs to the subclass of intermediate synchrotron peak (ISP) BL Lac objects. We study the multi-frequency emission in order to investigate the source classification. Finally, we compare the source long-term behaviour to other VHE gamma-ray emitting (TeV) blazars. We performed a temporal and spectral analysis of the data centred around the MAGIC interval of observation (MJD 57225-57231). Long-term radio and optical data have also been investigated using the discrete correlation function. The redshift of the source is estimated through optical host-galaxy imaging and also using the amount of VHE gamma-ray absorption. The quasi-simultaneous multi-frequency spectral energy distribution (SED) is modelled with the conventional one-zone synchrotron self-Compton (SSC) model. MAGIC observations resulted in the detection of the source at a significance level of $5.3\,\sigma$. The VHE gamma-ray emission of S2 0109+22 is variable on a daily time scale. VHE gamma-ray luminosity of the source is lower than the average of TeV BL Lacs. The optical polarization, and long-term optical/radio behaviour of the source are different from the general population of TeV blazars. All these findings agree with the classification of the source as an ISP BL Lac object. We estimate the source redshift as $z = 0.36 \pm 0.07$. The SSC parameters describing the SED are rather typical for blazars., Comment: 15 pages, 10 figures, Corresponding authors: Fallah Ramazani, V. (vafara@utu.fi), Hovatta, T. (talvikki.hovatta@utu.fi), Lindfors, E. (elilin@utu.fi) and Nilsson, K. (kani@utu.fi)

Published
2018
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26. Gamma-ray flaring activity of NGC 1275 in 2016-2017 measured by MAGIC

Author

MAGIC collaboration, Ansoldi, S., Antonelli, L. A., Arcaro, C., Baack, D., Babić, A., Banerjee, B., Bangale, P., de Almeida, U. Barres, Barrio, J. A., González, J. Becerra, Bednarek, W., Bernardini, E., Berse, R. Ch., Berti, A., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Carosi, R., Ceribella, G., Chatterjee, A., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Domínguez, A., Prester, D. Dominis, Dorner, D., Doro, M., Einecke, S., Elsaesser, D., Ramazani, V. Fallah, Fattorini, A., Fernández-Barral, A., Ferrara, G., Fidalgo, D., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Galindo, D., Gallozzi, S., López, R. J. García, Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Gora, D., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hoang, J., Hose, J., Hrupec, D., Ishio, K., Konno, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., López, M., Maggio, C., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Masuda, S., Mazin, D., Mielke, K., Minev, M., Miranda, J. M., Mirzoyan, R., Moralejo, A., Moreno, V., Moretti, E., Nagayoshi, T., Neustroev, V., Niedzwiecki, A., Rosillo, M. Nievas, Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Peñil, P., Peresano, M., Persic, M., Pfrang, K., Moroni, P. G. Prada, Prandini, E., Puljak, I., Garcia, J. R., Reichardt, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Saito, T., Satalecka, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Tsujimoto, S., Vanzo, G., Acosta, M. Vazquez, Vovk, I., Ward, J. E., Will, M., Zarić, D., Glawion, D., Takalo, L. O., and Jormanainen, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We report on the detection of flaring activity from the Fanaroff-Riley I radio galaxy NGC 1275 in very-high-energy (VHE, E $>$ 100 GeV) gamma rays with the MAGIC telescopes. Observations were performed between 2016 September and 2017 February as part of a monitoring program. The brightest outburst with $\sim1.5$ times the Crab Nebula flux above 100 GeV (C.U.) was observed during the night between 2016 December 31 and 2017 January 1 (fifty times higher than the mean previously measured in two observational campaigns between 2009 and 2011). Significant variability of the day-by-day light curve was measured, the shortest flux-doubling time-scales was found to be of $(611\pm101)$ min. The combined spectrum of the MAGIC data during the strongest flare state and simultaneous data from the Fermi-LAT around 2017 January 1 follows a power-law with an exponential cutoff at the energy $(492\pm35)$ GeV. Simultaneous optical flux density measurements in the R-band obtained with the KVA telescope are also presented and the correlation between the optical and gamma-ray emission is investigated. Due to possible internal pair-production, the fast flux variability constrains the Doppler factor to values which are inconsistent with a large viewing angle as observed in the radio band. We investigate different scenarios for the explanation of fast gamma-ray variability, namely emission from: magnetospheric gaps, relativistic blobs propagating in the jet (mini-jets) or external cloud (or star) entering the jet. We find that the only plausible model to account for the luminosities here observed would be the production of gamma rays in a magnetospheric gap around the central black hole only in the eventuality of an enhancement of the magnetic field threading the hole from its equipartition value with the gas pressure in the accretion flow., Comment: accepted for publications in Astronomy and Astrophysics

Published
2018
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27. VERITAS and Fermi-LAT Constraints on the Gamma-Ray Emission from Superluminous Supernovae SN2015bn and SN2017egm

Author

Acharyya, A., primary, Adams, C. B., additional, Bangale, P., additional, Benbow, W., additional, Buckley, J. H., additional, Capasso, M., additional, Dwarkadas, V. V., additional, Errando, M., additional, Falcone, A., additional, Feng, Q., additional, Finley, J. P., additional, Foote, G. M., additional, Fortson, L., additional, Furniss, A., additional, Gallagher, G., additional, Gent, A., additional, Hanlon, W. F, additional, Hervet, O., additional, Holder, J., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kherlakian, M., additional, Kieda, D., additional, Kleiner, T. K, additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, McGrath, C. E, additional, Millis, J., additional, Moriarty, P., additional, Mukherjee, R., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Patel, S. R., additional, Pfrang, K., additional, Pohl, M., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Roache, E., additional, Ryan, J. L., additional, Sadeh, I., additional, Santander, M., additional, Sembroski, G. H., additional, Shang, R., additional, Splettstoesser, M., additional, Tak, D., additional, Tucci, J. V., additional, Weinstein, A., additional, Williams, D. A., additional, Metzger, B. D., additional, Nicholl, M., additional, and Vurm, I., additional

Published
2023
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28. VTSCat: The VERITAS Catalog of Gamma-Ray Observations

Author

Acharyya, A., primary, Adams, C. B., additional, Archer, A., additional, Bangale, P., additional, Bartkoske, J. T., additional, Batista, P., additional, Benbow, W., additional, Brill, A., additional, Brose, R., additional, Buckley, J. H., additional, Capasso, M., additional, Christiansen, J. L., additional, Chromey, A. J., additional, Daniel, M. K., additional, Errando, M., additional, Falcone, A., additional, Farrell, K. A, additional, Feng, Q., additional, Finley, J. P., additional, Foote, G. M, additional, Fortson, L., additional, Furniss, A., additional, Gallagher, G., additional, Gent, A., additional, Giuri, C., additional, Gueta, O., additional, Hanlon, W. F, additional, Hanna, D., additional, Hassan, T., additional, Hervet, O., additional, Hoang, J., additional, Holder, J., additional, Hughes, G., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, Kleiner, T. K., additional, Korzoun, N., additional, Krennrich, F., additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, McGrath, C. E, additional, Millard, M. J, additional, Mooney, C. L., additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, A. N., additional, Pandel, D., additional, Park, N., additional, Patel, S. R., additional, Patel, S., additional, Pfrang, K., additional, Pichel, A., additional, Pohl, M., additional, Prado, R. R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Richards, G. T., additional, Roache, E., additional, Rovero, A. C., additional, Rulten, C., additional, Ryan, J. L., additional, Sadeh, I., additional, Santander, M., additional, Schlenstedt, S., additional, Sembroski, G. H., additional, Shang, R., additional, Splettstoesser, M., additional, Stevenson, B., additional, Tak, D., additional, Vassiliev, V. V., additional, Wakely, S. P., additional, Weinstein, A., additional, Williams, D. A., additional, Williamson, T. J, additional, Angelini, L., additional, Basu-Zych, A., additional, Sabol, E., additional, and Smale, A., additional

Published
2023
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29. CTA – the World’s largest ground-based gamma-ray observatory

Author

Zanin, Roberta, Abdalla, H, Abe, H, Abe, S, Abusleme, A, Acero, F, Acharyya, A, Acin Portella, V, Ackley, K, Adam, R, Adams, C, Adhikari, SS, Aguado Ruesga, I, Agudo, I, Aguilera, R, Aguirre Santaella, A, Aharonian, F, Alberdi, A, Alfaro, R, Alfaro, J, Alispach, C, Aloisio, R, Alves Batista, R, Amans, JP, Amati, L, Amato, E, Ambrogi, L, Ambrosi, G, Ambrosio, M, Ammendola, R, Anderson, J, Anduze, M, Anguner, EO, Antonelli, LA, Antonuccio, V, Antoranz, P, Anutarawiramkul, R, Aragunde Gutierrez, J, Aramo, C, Araudo, A, Araya, M, Arbet Engels, A, Arcaro, C, Arendt, V, Armand, C, Armstrong, T, Arqueros, F, Arrabito, L, Arsioli, B, Artero, M, Asano, K, Ascasibar, Y, Aschersleben, J, Ashley, M, Attina, P, Aubert, P, B. Singh, C, Baack, D, Babic, A, Backes, M, Baena, V, Bajtlik, S, Baktash, A, Balazs, C, Balbo, M, Ballester, O, Ballet, J, Balmaverde, B, Bamba, A, Bandiera, R, Baquero Larriva, A, Barai, P, Barbier, C, Barbosa Martins, V, Barcelo, M, Barkov, M, Barnard, M, Baroncelli, L, Barres de Almeida, U, Barrio, JA, Bastieri, D, Batista, PI, Batkovic, I, Bauer, C, Bautista González, R, Baxter, J, Becciani, U, Becerra González, J, Becherini, Y, Beck, G, Becker Tjus, J, Bednarek, W, Belfiore, A, Bellizzi, L, Belmont, R, Benbow, W, Berge, D, Bernardini, E, Bernardos, MI, Bernlöhr, K, Berti, A, Berton, M, Bertucci, B, Beshley, V, Bhatt, N, Bhattacharyya, S, Bhattacharyya, W, Bi, BY, Bicknell, G, Biederbeck, N, Bigongiari, C, Biland, A, Bird, R, Bissaldi, E, Biteau, J, Bitossi, M, Blanch, O, Blank, M, Blazek, J, Bobin, J, Boccato, C, Bocchino, F, Boehm, C, Bohacova, M, Boisson, C, Boix, J, Bolle, JP, Bolmont, J, Bonanno, G, Bonavolontà, C, Bonneau Arbeletche, L, Bonnoli, G, Bordas, P, Borkowski, J, Bose, R, Bose, D, Bosnjak, Z, Bottacini, E, Böttcher, Markus, Botticella, MT, Boutonnet, C, Bouyjou, F, Bozhilov, V, Bozzo, E, Brahimi, L, Braiding, C, Brau Nogue, S, Breen, S, Bregeon, J, Breuhaus, M, Brill, A, Brisken, W, Brocato, E, Brown, AM, Brügge, K, Brun, P, Brun, F, Brunetti, L, Brunetti, G, Bruno, P, Bruno, A, Bruzzese, A, Bucciantini, N, Buckley, JH, Bühler, R, Bulgarelli, A, Bulik, T, Bünning, M, Bunse, M, Burton, M, Burtovoi, A, Buscemi, M, Buschjager, S, Busetto, G, Buss, J, Byrum, K, Caccianiga, A, Cadoux, F, Calanducci, A, Calderon, C, Calvo Tovar, J, Cameron, RA, Campana, P, Canestrari, R, Cangemi, F, Cantlay, B, Capalbi, M, Capasso, M, Cappi, M, Caproni, A, Capuzzo Dolcetta, R, Caraveo, P, Cárdenas, V, Cardiel, L, Cardillo, M, Carlile, C, Caroff, S, Carosi, R, Carosi, A, Carquin, E, Carrere, M, Casandjian, JM, Casanova, S, Cassol, F, Catalani, F, Catalano, O, Cauz, D, Ceccanti, A, Celestino Silva, C, Cerny, K, Cerruti, M, Chabanne, E, Chadwick, P, Chai, Y, Chambery, P, Champion, C, Chaty, S, Chen, A, Cheng, K, Chernyakova, M, Chiaro, G, Chiavassa, A, Chikawa, M, Chitnis, VR, Chudoba, J, Chytka, L, Cikota, S, Circiello, A, Clark, P, Colak, M, Colombo, E, Colonges, S, Comastri, A, Compagnino, A, Conforti, V, Congiu, E, Coniglione, R, Conrad, J, Conte, F, Contreras, JL, Coppi, P, Cornat, R, Coronado Blazquez, J, Cortina, J, Costa, A, Costantini, H, Cotter, G, Courty, B, Covino, S, Crestan, S, Cristofari, P, Crocker, R, Croston, J, Cubuk, K, Cuevas, O, Cui, X, Cusumano, G, Cutini, S, D'Amico, G, D'Ammando, F, D'Avanzo, P, Da Vela, P, Dadina, M, Dai, S, Dalchenko, M, Dall'Ora, M, Daniel, MK, Dauguet, J, Davids, I, Davies, J, Dawson, B, De Angelis, A, de Araujo Carvalho, AE, de Bony de Lavergne, M, De Cesare, G, de Frondat, F, de la Calle, I, de Gouveia Dal Pino, E, De Lotto, B, De Luca, A, De Martino, D, de Naurois, M, de Ona Wilhelmi, E, De Palma Persio, F, De Simone, N, de Souza Valle, V, Delagnes, E, Deleglise Reznicek, G, Delgado, C, Delgado Giler, AG, Delgado Mengual Valle, J, della Volpe, D, Depaoli, D, Devin, J, Di Girolamo, T, Di Giulio Pierro, C, Di Venere, L, Díaz, C, Dib, C, Diebold, S, Digel, S, Djannati Atai, A, Djuvsland, J, Dmytriiev, A, Docher, K, Domínguez, A, Dominis Prester, D, Donini, A, Dorner, D, Doro, M, dos Anjos, Rita Cassia, Dournaux, JL, Downes, T, Drake, G, Drass, H, Dravins, D, Duangchan, C, Duara, A, Dubus, G, Ducci, L, Duffy, C, Dumora, D, Dundas Mora, K, Durkalec, A, Dwarkadas, VV, Ebr, J, Eckner, C, Eder, J, Edy, E, Egberts, K, Einecke, S, Eleftheriadis, C, Elsässer, D, Emery, G, Emmanoulopoulos, D, Ernenwein, JP, Errando, M, Escarate, P, Escudero, J, Espinoza, C, Ettori, S, Eungwanichayapant, A, Evans, P, Evoli, C, Fairbairn, M, Falceta Goncalves, D, Falcone, A, Fallah Ramazanı, V, Falomo, R, Farakos, K, Fasola, G, Fattorini, A, Favre, Y, Fedora, R, Fedorova, E, Feijen, K, Feng, Q, Ferrand, G, Ferrara, G, Ferreira, O, Fesquet, M, Fiandrini, E, Fiasson, A, Filipovic, M, Fink, D, Finley, JP, Fioretti, V, Fiorillo, DFG, Fiorini, M, Flis, S, Flores, H, Foffano, L, Fohr, C, Fonseca, MV, Font, L, Fontaine, G, Fornieri, O, Fortin, P, Fortson, L, Fouque, N, Fraga, B, Franceschini, A, Franco, FJ, Freixas Coromina, L, Fresnillo, L, Fugazza, D, Fujita, Y, Fukami, S, Fukazawa, Y, Fulla, D, Funk, S, Furniss, A, Gabici, S, Gaggero, D, Galanti, G, Galdemard, P, Gallant, YA, Galloway, D, Gallozzi, S, Gammaldi, V, Garcia, R, García-Muñoz, LE, Garcia Lopez, E, Gargano, F, Gargano, C, Garozzo, S, Gascon, D, Gasparetto, T, Gasparrini, D, Gasparyan, H, Gaug, M, Geffroy, N, Gent, A, Germani, S, Ghalumyan, A, Ghedina, A, Ghirlanda, G, Gianotti, F, Giarrusso, S, Giarrusso, M, Giavitto, G, Giebels, B, Giglietto, N, Gika, V, Gillardo, F, Gimenes, R, Giordano, F, Giro, E, Giroletti, M, Giuliani, Andrea, Gjaja, M, Glicenstein, JF, Gliwny, P, Goksu, H, Goldoni, P, Gomez, JL, Gonzalez, MM, Gonzalez, JM, Gothe, KS, Gotz Coelho, D, Grabarczyk, T, Graciani, R, Grandi, P, Grasseau, G, Grasso, D, Green, D, Green, J, Greenshaw, T, Grespan, P, Grillo, A, Grondin, MH, Grube, J, Guarino, V, Guest, B, Gueta, O, Günduz, M, Gunji, S, Gyuk, G, Hackfeld, J, Hadasch, D, Hagge, L, Hahn, A, Hajlaoui, JE, Halim, A, Hamal, P, Hanlon, W, Harada, Y, Hardcastle, MJ, Harvey Collado, M, Haubold, T, Haupt, A, Havelka, M, Hayashi, K, Hayashida, M, He, H, Heckmann, L, Heller, M, Henault, F, Henri, Gilles, Hermann, G, Hernández Cadena, S, Herrera Llorente, J, Hervet, O, Hinton, J, Hiramatsu, A, Hirotani, K, Hnatyk, B, Hnatyk, R, Hoang, JK, Hoffmann, DHH, Hoischen, C, Holder, J, Holler, M, Hona, B, Horan, D, Horns, Dieter, Horvath, P, Houles, J, Hrabovsky, M, Hrupec, D, Huang, Y, Huet, J‑M, Hughes, G, Hull, G, Humensky, TB, Hütten, M, Iarlori, M, Illa, JM, Imazawa, R, Inada, T, Incardona, F, Ingallinera, A, Inoue, S, Inoue, T, Inoue, Y, Iocco, F, Ioka, K, Ionica, M, Iovenitti, S, Iriarte, A, Ishio, K, Ishizaki, W, Iwamura, Y, Jacquemier, J, Jacquemont, M, Jamrozy, M, Janecek, P, Jankowsky, F, JardinBlicq, A, Jarnot, C, Jean Martínez, P, Jocou, L, Jordana, N, Josselin, M, JungRichardt, I, Junqueira, FJPA, Juramy Gilles, C, Kaaret, P, Kadowaki, LHS, Kagaya, M, Kankanyan, R, Kantzas, D, Karas, V, Karastergiou, A, Karkar, S, Kasperek, J, Katagiri, H, Kataoka, J, Katarzynski, K, Katsuda, S, Kawanaka, N, Kazanas, D, Kerszberg, D, Khélifi, B, Kherlakian, MC, Kian, TP, Kieda, DB, Kihm, T, Kim, S, Kisaka, S, Kissmann, R, Kleijwegt, R, Kluge, G, Kluźniak, W, Knapp, J, Kobakhidze, A, Kobayashi, Y, Koch, B, Kocot, J, Kohri, K, Komin, N, Kong, A, Kosack, K, Krack, F, Krause, M, Krennrich, F, Kubo, H, Kudryavtsev, VN, Kunwar, S, Kushida, J, Kushwaha, P, Parola, Barbera, La Rosa, G, Lahmann, R, Lamastra, A, Landoni, M, Landriu, D, Lang, RG, Lapington, J, Laporte, P, Lason, P, Lasuik, J, Lazendic Galloway, J, Le Flour, T, Le Sidaner, P, Leach, S, Lee, SH, Lee, WH, Lee Oliveira, S, Lemiere, A, Lemoine Goumard, M, Lenain, JP, Leone, F, Leray, V, Leto, G, Leuschner, F, Lindemann, R, Lindfors, E, Linhoff, L, Liodakis, I, Lipniacka, A, Lobo, M, Lohse, Thomas, Lombardi, S, Lopez, A, Lopez, M, Lopez Coto, R, Louis, F, Louys, M, Lucarelli, F, Ludwig Boudi, H, Luque Escamilla, PL, Maccarone, MC, Mach, E, Maciejewski, AJ, Mackey, J, Maeght, P, Maggio, C, Maier, G, Majumdar, P, Makariev, M, Mallamaci, M, Malta Nunes de Almeida, R, Malyshev, D, Mandat, D, Maneva, G, Manganaro, M, Manigot, P, Mannheim, K, Maragos, N, Marano, D, Marconi, M, Marcowith, A, Marculewicz, M, Marcun, B, Marin, J, Marinello, N, Marinos, P, Markoff, S, Marquez, P, Marsella, G, Martin, JM, Martin, PG, Martinez, M, Martinez, G, Martinez, O, Martinez Huerta, H, Marty, C, Marx, R, Masetti, N, Massimino, P, Matsumoto, H, Matthews, N, Maurin, G, Max Moerbeck, W, Maxted, N, Mazziotta, MN, Mazzola, SM, Mbarubucyeye, JD, Mc Comb, L, McHardy, I, McKeague, S, McMuldroch, S, Medina, E, Medina Miranda, D, Melandri, A, Melioli, C, Melkumyan, D, Menchiari, S, Mereghetti, S, Merino Arevalo, G, Mestre, E, Meunier, JL, Meures, T, Micanovic, S, Miceli, M, Michailidis, M, Michalowski, J, Miener, T, Mievre, I, Miller, JD, Mineo, T, Minev, M, Miranda, JM, Mitchell, A, Mizuno, T, Mode, BA, Moderski, R, Mohrmann, L, Molinari, E, Montaruli, T, Monteiro, I, Moore, C, Moralejo, A, Morcuende Parrilla, D, Moretti, E, Mori, K, Moriarty, P, Morik, K, Morris, P, Morselli, A, Mosshammer, K, Mukherjee, R, Muller, J, Mundell, C, Mundet, J, Murach, T, Muraczewski, A, Muraishi, H, Musella, I, Musumarra, A, Nagai, A, Nagataki, S, Naito, T, Nakamori, T, Nakashima, K, Nakayama, K, Nakhjiri, N, Naletto, G, Naumann, D, Nava, L, Nawaz, MA, Ndiyavala, H, Neise, D, Nellen, L, Nemmen, R, Neyroud, N, Ngernphat, K, Nguyen Trung, T, Nicastro, L, Nickel, L, Niemiec, J, Nieto, D, Nigro, C, Nikołajuk, M, Ninci, D, Noda, K, Nogami, Y, Nolan, S, Norris, RP, Nosek, D, Nöthe, M, Novotny, V, Nozaki, S, Nunio, F, O'Brien, P, Obara, K, Ohira, Y, Ohishi, M, Ohm, S, Oka, T, Okazaki, N, Okumura, A, Oliver, C, Olivera, G, Olmi, B, Orienti, M, Orito, R, Orlandini, M, 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Orlando, E, Osborne, JP, Ostrowski, M, Otte, N, Ovcharov, E, Owen, E, Oya, I, Ozieblo, A, Padovani, M, Pagliaro, A, Paizis, A, Palatiello, M, Palatka, M, Palazzi, E, Panazol, J‑L, Paneque, D, Panny, S, Pantaleo, FR, Panter, M, Paolillo, M, Papitto, A, Paravac, A, Paredes, JM, Pareschi, G, Parmiggiani, N, Parsons, RD, Paśko, P, Patel, SR, Patricelli, B, Pavletic, L, Pavy, S, Peer, A, Pecimotika, M, Pellegriti, MG, Peñil Del Campo, P, Pepato, A, Perard, S, Perennes, C, Peresano, M, Perez Aguilera, A, Perez Romero, J, Perez Torres, MA, Persic, M, Petrucci, PO, Petruk, O, Peyaud, B, Pfrang, K, Pian, E, Piatteli, P, Pietropaolo, E, Pillera, R, Pimentel, D, Pintore, F, Pio Garcia, C, Pirola, G, Piron, F, Pita, S, Pohl, M, Poireau, V, Pollo, A, Polo, M, Pongkitivanichkul, C, Porthault, J, Powell, J, Pozo, D, Prado, RR, Prandini, E, Prast, J, Pressard, K, Principe, G, Produit, N, Prokhorov, D, Prokoph, H, Przybilski, H, Pueschel, E, Pühlhofer, G, Puljak, I, Pumo, ML, Punch, M, Queiroz, F, Quinn, J, Quirrenbach, A, Rajda, PJ, Rando, R, Razzaque, S, Recchia, S, Reichherzer, P, Reimer, O, Reisenegger, A, Remy, Q, Renaud, M, Reposeur, T, Reville, B, Reymond, JM, Reynolds, J, Ribeiro, D, Ribo, M, Richards, G, Rico, J, Rieger, F, Riitano, L, Riquelme, M, Riquelme, D, Rivoire, S, Rizi, V, Roache, E, Roche, M, Rodriguez, J, Rodriguez Fernandez, G, Rodriguez Ramirez, JC, Rodriguez Vazquez, JJ, Rojas, G, Romano, P, Romeo Lobato, G, Romoli, C, Roncadelli, M, Rosado, J, Rosales de Leon, A, Rowell, G, Rugliancich, A, Ruiz del Mazo, JE, Rulten, C, Russell, C, Russo Hatlen, F, Safi Harb, S, Saha, L, Sahakian, V, Sailer, S, Saito, T, Sakaki, N, Sakurai, S, Salina, G, Salzmann, H, Sanchez, D, Sandaker, H, Sandoval, A, Sangiorgi, P, Sanguillon, M, Sano, H, Santander, M, Santangelo, A, Santos Lima, R, Sanuy, A, Sapozhnikov, L, Saric, T, Sarkar, S, Sasaki, H, Sasaki, N, Sato, Y, Saturni, FG, Sawada, M, Schaefer, J, Scherer, A, Scherpenberg, J, Schipani, P, Schleicher, B, Schmoll, J, Schneider, M, Schoorlemmer, H, Schovanek, P, Schussler, F, Schwab, B, Schwanke, U, Schwarz, J, Sciacca, E, Scuderi, S, Seglar Arroyo, M, Seitenzahl, I ; https://orcid.org/0000-0002-5044-2988, Semikoz, D, Sergijenko, O, Serna Franco, JE, Seweryn, Karol, Sguera, V, Shalchi, A, Shang, RY, Sharma, P, Sidoli, L, Sieiro, J, Siejkowski, H, Sillanpaa, A, Singh, BB, Singh, KK, Sinha, A, Siqueira, C, Sitarek, J, Sizun, P, Sliusar, V, Sobczynska, D, Sobrinho, RW, Sol, H, Sottile, G, Spackman, H, Spencer, S, Spengler, G, Spiga, D, Springer, W, Stamerra, A, Stanic, S, Starling, R, Stawarz, Ł, Stefanik, Stanislav, Stegmann, C, Steiner, A, Steinmassl, S, Stella, C, Sternberger, R, Sterzel, M, Stevens, C, Stevenson, B, Stolarczyk, T, Stratta, G, Straumann, U, Striskovic, J, Strzys, M, Stuik, R, Suchenek, M, Sunada, Y, Suomijarvi, T, Suric, T, Suzuki, H, Swierk, P, Szepieniec, T, Tachihara, K, Tagliaferri, G, Tajima, H, Tajima, N, Tak, D, Takahashi, H, Takahashi, M, Takata, J, Takeishi, R, Tam, T, Tanaka, M, Tanaka, T, Tanaka, S, Tavani, M, Tavecchio, F, Tavernier, T, Taylor, A Russ, Tejedor, LA, Temnikov, P, Terauchi, K, Terrazas, JC, Terrier, R, Terzic, T, Teshima, M, Thibaut, D, Thocquenne, F, Tian, W, Tibaldo, L, Tiengo, A, Tluczykont, M, Todero Peixoto, CJ, Toma, K, Tomankova, L, Tomastik, J, Tornikoski, M, Torres, DF, Torresi, E, Tosti, G, Tosti, L, Tothill, N, Toussenel, F, Tovmassian, G, Trichard, C, Trifoglio, M, Trois, A, Truzzi, S, Tsiahina, A, Turk, B, Tutone, A, Uchiyama, Y, Utayarat, P, Vaclavek, L, Vacula, M, Vagelli, V, Vagnetti, F, Valdivia, JA, Valentino, M, Valio, A, Vallage, B, Vallania Quispe, P, van den Berg, AM, van Driel, W, van Eldik, C, van Rensburg, C, van Soelen, Brian, Vandenbroucke, J, Vasileiadis, G, Vassiliev, V, Vazquez Acosta, M, Vecchi, M, Vega, A, Veh, J, Veitch, P, Venter, C, Ventura, S, Vercellone, S, Verguilov, V, Verna, G, Vernetto, S, Verzi, V, Vettolani, GP, Veyssiere, C, Viale, I, Viana, A, Viaux, N, Vignatti, J, Vigorito, CF, Villanueva, J, Vitale, V, Vittorini, V, Vodeb, V, Vogel, N, Voisin, V, Vorobiov, S, Vrastil, M, Vuillaume, T, Wagner, SJ, Wagner, P, Wakazono, K, Wakely, SP, Ward, M, Warren, D, Watson, J, Wechakama, M, Wegner, P, Weinstein, A, Weniger, C, Werner, F, Wetteskind, H, White, ML, Wierzcholska, A, Wiesand, S, Wijers, R, Wilkinson, M, Will, M, Williams, J, Williamson, TJ, Wolter, A, Wong, YW, Wood, M, Yamamoto, T, Yamamoto, H, Yamane, Y, Yamazaki, R, Yanagita, S, Yang, L, Yoo, S, Yoshida, T, Yoshikoshi, T, Yu, P, Yusafzai, A, Zacharias, Michael, Zaldivar, B, Zampieri, L, Zanin, R, Zanmar Sanchez, R, Zaric, D, Zavrtanik, M, Zavrtanik, D, Zdziarski, Andrzej, Zech, A, Zechlin, H, Zenin, A, Zerwekh, A, Ziętara, K, Zink, A, Ziolkowski, J, Zivec, M, and Zmija, A

Published
2022

30. Multiwavelength Observations of the Blazar VER J0521+211 during an Elevated TeV Gamma-Ray State

Author

Adams, C. B., primary, Batista, P., additional, Benbow, W., additional, Brill, A., additional, Brose, R., additional, Buckley, J. H., additional, Capasso, M., additional, Christiansen, J. L., additional, Errando, M., additional, Feng, Q., additional, Finley, J. P., additional, Foote, G. M., additional, Fortson, L., additional, Furniss, A., additional, Gallagher, G., additional, Gent, A., additional, Giuri, C., additional, Hanlon, W. F., additional, Hanna, D., additional, Hassan, T., additional, Hervet, O., additional, Holder, J., additional, Hona, B., additional, Hughes, G., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, Kleiner, T. K., additional, Krennrich, F., additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, Millis, J., additional, Moriarty, P., additional, Mukherjee, R., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, A. N., additional, Patel, S., additional, Patel, S. R., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R. R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Roache, E., additional, Ryan, J. L., additional, Sadeh, I., additional, Santander, M., additional, Sembroski, G. H., additional, Shang, R., additional, Stevenson, B., additional, Tucci, J. V., additional, Vassiliev, V. V., additional, Wakely, S. P., additional, Weinstein, A., additional, Wells, R. M., additional, Williams, D. A., additional, Williamson, T. J., additional, Acciari, V. A., additional, Aniello, T., additional, Ansoldi, S., additional, Antonelli, L. A., additional, Engels, A. Arbet, additional, Arcaro, C., additional, Artero, M., additional, Asano, K., additional, Baack, D., additional, Babić, A., additional, Baquero, A., additional, de Almeida, U. Barres, additional, Barrio, J. A., additional, Batković, I., additional, González, J. Becerra, additional, Bednarek, W., additional, Bernardini, E., additional, Bernardos, M., additional, Berti, A., additional, Besenrieder, J., additional, Bhattacharyya, W., additional, Bigongiari, C., additional, Biland, A., additional, Blanch, O., additional, Bökenkamp, H., additional, Bonnoli, G., additional, Bošnjak, Ž., additional, Burelli, I., additional, Busetto, G., additional, Carosi, R., additional, Ceribella, G., additional, Cerruti, M., additional, Chai, Y., additional, Chilingarian, A., additional, Cikota, S., additional, Colombo, E., additional, Contreras, J. L., additional, Cortina, J., additional, Covino, S., additional, D’Amico, G., additional, D’Elia, V., additional, Vela, P. Da, additional, Dazzi, F., additional, Angelis, A. De, additional, Lotto, B. De, additional, Popolo, A. Del, additional, Delfino, M., additional, Delgado, J., additional, Mendez, C. Delgado, additional, Depaoli, D., additional, Pierro, F. Di, additional, Venere, L. Di, additional, Souto Espiñeira, E. Do, additional, Prester, D. Dominis, additional, Donini, A., additional, Dorner, D., additional, Doro, M., additional, Elsaesser, D., additional, Ramazani, V. Fallah, additional, Fariña, L., additional, Fattorini, A., additional, Font, L., additional, Fruck, C., additional, Fukami, S., additional, Fukazawa, Y., additional, López, R. J. García, additional, Garczarczyk, M., additional, Gasparyan, S., additional, Gaug, M., additional, Giglietto, N., additional, Giordano, F., additional, Gliwny, P., additional, Godinović, N., additional, Green, J. G., additional, Green, D., additional, Hadasch, D., additional, Hahn, A., additional, Heckmann, L., additional, Herrera, J., additional, Hrupec, D., additional, Hütten, M., additional, Inada, T., additional, Iotov, R., additional, Ishio, K., additional, Iwamura, Y., additional, Martínez, I. Jiménez, additional, Jormanainen, J., additional, Jouvin, L., additional, Kerszberg, D., additional, Kobayashi, Y., additional, Kubo, H., additional, Kushida, J., additional, Lamastra, A., additional, Lelas, D., additional, Leone, F., additional, Lindfors, E., additional, Linhoff, L., additional, Lombardi, S., additional, Longo, F., additional, López-Coto, R., additional, López-Moya, M., additional, López-Oramas, A., additional, Loporchio, S., additional, Lorini, A., additional, de Oliveira Fraga, B. Machado, additional, Maggio, C., additional, Majumdar, P., additional, Makariev, M., additional, Maneva, G., additional, Manganaro, M., additional, Mannheim, K., additional, Mariotti, M., additional, Martínez, M., additional, Aguilar, A. Mas, additional, Mazin, D., additional, Menchiari, S., additional, Mender, S., additional, Mićanović, S., additional, Miceli, D., additional, Miener, T., additional, Miranda, J. M., additional, Mirzoyan, R., additional, Molina, E., additional, Mondal, H. A., additional, Moralejo, A., additional, Morcuende, D., additional, Moreno, V., additional, Nakamori, T., additional, Nanci, C., additional, Nava, L., additional, Neustroev, V., additional, Rosillo, M. Nievas, additional, Nigro, C., additional, Nilsson, K., additional, Nishijima, K., additional, Noda, K., additional, Nozaki, S., additional, Ohtani, Y., additional, Oka, T., additional, Otero-Santos, J., additional, Paiano, S., additional, Palatiello, M., additional, Paneque, D., additional, Paoletti, R., additional, Paredes, J. M., additional, Pavletić, L., additional, Peñil, P., additional, Persic, M., additional, Pihet, M., additional, Moroni, P. G. Prada, additional, Prandini, E., additional, Priyadarshi, C., additional, Puljak, I., additional, Rhode, W., additional, Ribó, M., additional, Rico, J., additional, Righi, C., additional, Rugliancich, A., additional, Sahakyan, N., additional, Saito, T., additional, Sakurai, S., additional, Satalecka, K., additional, Saturni, F. G., additional, Schleicher, B., additional, Schmidt, K., additional, Schmuckermaier, F., additional, Schubert, J. L., additional, Schweizer, T., additional, Sitarek, J., additional, Šnidarić, I., additional, Sobczynska, D., additional, Spolon, A., additional, Stamerra, A., additional, Strišković, J., additional, Strom, D., additional, Strzys, M., additional, Suda, Y., additional, Surić, T., additional, Takahashi, M., additional, Takeishi, R., additional, Tavecchio, F., additional, Temnikov, P., additional, Terzić, T., additional, Teshima, M., additional, Tosti, L., additional, Truzzi, S., additional, Tutone, A., additional, Ubach, S., additional, Scherpenberg, J. van, additional, Vanzo, G., additional, Acosta, M. Vazquez, additional, Ventura, S., additional, Verguilov, V., additional, Viale, I., additional, Vigorito, C. F., additional, Vitale, V., additional, Vovk, I., additional, Will, M., additional, Wunderlich, C., additional, Yamamoto, T., additional, and Zarić, D., additional

Published
2022
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31. Combined dark matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS

Author

Charles, E., Di Mauro, M., Giuri, C., Salazar-Gallegos, D., Zitzer, B., Abeysekara, A. U., Albert, A., Alfaro, R., Alvarez, C., Álvarez, J. D., Angeles Camacho, J. R., Arteaga-Velázquez, J. C., Arunbabu, K. P., Avila Rojas, D., Ayala Solares, H. A., Babu, R., Baghmanyan, V., Barber, A. S., Becerra Gonzalez, J., Belmont-Moreno, E., Benzvi, S. Y., Berley, D., Brisbois, C., Caballero-Mora, K. S., Capistrán, T., Carramiñana, A., Casanova, S., Chaparro-Amaro, O., Cotti, U., Cotzomi, J., Coutiño León, S., La Fuente, E., León, C., Diaz-Cruz, L., Diaz Hernandez, R., Díaz-Vélez, J. C., Dingus, B. L., Durocher, M., Duvernois, M. A., Ellsworth, R. W., Engel, K., Espinoza, C., Fan, K. L., Fang, K., Fernández Alonso, M., Fick, B., Fleischhack, H., Flores, J. L., Fraija, N. I., Garcia, D., García-González, J. A., García-Luna, J. L., García-Torales, G., Garfias, F., Giacinti, G., Goksu, H., González, M. M., Goodman, J. A., Harding, J. P., Hernandez, S., Herzog, I., Hinton, J., Hona, B., Huang, D., Hueyotl-Zahuantitla, F., Hui, C. M., Humensky, B., Hüntemeyer, P., Iriarte, A., Jardin-Blicq, A., Jhee, H., Joshi, V., Kieda, D., Kunde, G. J., Kunwar, S., Lara, A., Lee, J., Lee, W. H., Lennarz, D., León Vargas, H., Linnemann, J., Longinotti, A. L., López-Coto, R., Luis-Raya, G., Lundeen, J., Malone, K., Marandon, V., Martinez, O., Martinez-Castellanos, I., Martínez-Huerta, H., Martínez-Castro, J., Matthews, J. A. J., Mcenery, J., Miranda-Romagnoli, P., Morales-Soto, J. A., Moreno, E., Mostafá, M., Nayerhoda, A., Nellen, L., Newbold, M., Nisa, M. U., Noriega-Papaqui, R., Olivera-Nieto, L., Omodei, N., Peisker, A., Pérez Araujo, Y., Pérez-Pérez, E. G., Rho, C. D., Rivière, C., Rosa-Gonzalez, D., Ruiz-Velasco, E., Ryan, J., Salazar, H., Salesa Greus, F., Sandoval, A., Schneider, M., Schoorlemmer, H., Serna-Franco, J., Sinnis, G., Smith, A. J., Springer, R. W., Surajbali, P., Taboada, I., Tanner, M., Tollefson, K., Torres, I., Torres-Escobedo, R., Turner, R., Ureña-Mena, F., Villaseñor, L., Wang, X., Watson, I. J., Weisgarber, T., Werner, F., Willox, E., Wood, J., Yodh, G. B., Zepeda, A., Zhou, H., Abdallah, H., Adam, R., Aharonian, F., Ait Benkhali, F., Angüner, E. O., Arcaro, C., Armand, C., Armstrong, T., Ashkar, H., Backes, M., Barbosa Martins, V., Barnacka, A., Barnard, M., Becherini, Y., Berge, D., Bernlöhr, K., Bi, B., Böttcher, M., Boisson, C., Bolmont, J., Bony Lavergne, M., Breuhaus, M., Brun, F., Brun, P., Bryan, M., Büchele, M., Bulik, T., Bylund, T., Caroff, S., Carosi, A., Chand, T., Chandra, S., Chen, A., Cotter, G., Curyło, M., Damascene Mbarubucyeye, J., Davids, I. D., Davies, J., Deil, C., Devin, J., Dewilt, P., Dirson, L., Djannati-Ataï, A., Dmytriiev, A., Donath, A., Doroshenko, V., Duffy, C., Dyks, J., Egberts, K., Eichhorn, F., Einecke, S., Emery, G., Ernenwein, J. -P, Feijen, K., Fegan, S., Fiasson, A., Fichet Clairfontaine, G., Fontaine, G., Funk, S., Füßling, M., Gabici, S., Gallant, Y. A., Giavitto, G., Giunti, L., Glawion, D., Glicenstein, J. F., Gottschall, D., Grondin, M. -H, Hahn, J., Haupt, M., Hermann, G., Hinton, J. A., Hofmann, W., Hoischen, C., Holch, T. L., Holler, M., Hörbe, M., Horns, D., Huber, D., Jamrozy, M., Jankowsky, D., Jankowsky, F., Jung-Richardt, I., Kasai, E., Kastendieck, M. A., Katarzyński, K., Katz, U., Khangulyan, D., Khélifi, B., Klepser, S., Kluźniak, W., Komin, Nu, Konno, R., Kosack, K., Kostunin, D., Kreter, M., Lamanna, G., Lemière, A., Lemoine-Goumard, M., Lenain, J. -P, Levy, C., Lohse, T., Lypova, I., Mackey, J., Majumdar, J., Malyshev, D., Marchegiani, P., Marcowith, A., Mares, A., Martì-Devesa, G., Marx, R., Maurin, G., Meintjes, P. J., Meyer, M., Moderski, R., Mohamed, M., Mohrmann, L., Montanari, A., Moore, C., Morris, P., Moulin, E., Muller, J., Murach, T., Nakashima, K., Naurois, M., Ndiyavala, H., Niederwanger, F., Niemiec, J., Oakes, L., O’brien, P., Odaka, H., Ohm, S., Ona Wilhelmi, E., Ostrowski, M., Panter, M., Panny, S., Parsons, R. D., Peron, G., Peyaud, B., Piel, Q., Pita, S., Poireau, V., Priyana Noel, A., Prokhorov, D. A., Prokoph, H., Pühlhofer, G., Punch, M., Quirrenbach, A., Raab, S., Rauth, R., Reichherzer, P., Reimer, A., Reimer, O., Remy, Q., Renaud, M., Rieger, F., Rinchiuso, L., Romoli, C., Rowell, G., Rudak, B., Sahakian, V., Sailer, S., Sanchez, D. A., Santangelo, A., Sasaki, M., Scalici, M., Schüssler, F., Schutte, H. M., Schwanke, U., Schwemmer, S., Seglar-Arroyo, M., Senniappan, M., Seyffert, A. S., Shafi, N., Shiningayamwe, K., Simoni, R., Sinha, A., Sol, H., Specovius, A., Spencer, S., Spir-Jacob, M., Stawarz, Ł., Sun, L., Steenkamp, R., Stegmann, C., Steinmassl, S., Steppa, C., Takahashi, T., Tavernier, T., Taylor, A. M., Terrier, R., Tiziani, D., Tluczykont, M., Tomankova, L., Trichard, C., Tsirou, M., Tuffs, R., Uchiyama, Y., Walt, D. J., Eldik, C., Rensburg, C., Soelen, B., Vasileiadis, G., Veh, J., Venter, C., Vincent, P., Vink, J., Völk, H. J., Vuillaume, T., Wadiasingh, Z., Wagner, S. J., Watson, J., White, R., Wierzcholska, A., Wong, Y. W., Yusafzai, A., Zacharias, M., Zanin, R., Zargaryan, D., Zdziarski, A. A., Zech, A., Zhu, S., Zorn, J., Zouari, S., Z̀ywucka, N., Acciari, V. A., Ansoldi, S., Antonelli, L. A., Arbet Engels, A., Artero, M., Asano, K., Baack, D., Babić, A., Baquero, A., Barres Almeida, U., Barrio, J. A., Batković, I., Becerra González, J., Bednarek, W., Bellizzi, L., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bökenkamp, H., Bonnoli, G., Bošnjak, Ž, Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D’amico, G., D’elia, V., Da Vela, P., Dazzi, F., Angelis, A., Lotto, B., Delfino, M., Delgado, J., Delgado Mendez, C., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espiñeira, E., Do-Minis Prester, D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Fallah Ramazani, V., Fattorini, A., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., Fukazawa, Y., García López, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinović, N., Green, J. G., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., Hütten, M., Inada, T., Ishio, K., Iwamura, Y., Jiménez Martínez, I., Jormanainen, J., Jouvin, L., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Linhoff, L., Lombardi, S., Longo, F., López-Moya, M., López-Oramas, A., Loporchio, S., Machado Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Menchiari, S., Mender, S., Mićanović, S., Miceli, D., Miener, T., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Nakamori, T., Nava, L., Neustroev, V., Nigro, C., Nilsson, K., Nishijima, K., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletić, L., Peñil, P., Persic, M., Pihet, M., Prada Moroni, P. G., Prandini, E., Priyadarshi, C., Puljak, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., Šnidarić, I., Dorota Sobczynska, Spolon, A., Stamerra, A., Strišković, J., Strom, D., Strzys, M., Suda, Y., Surić, T., Takahashi, M., Takeishi, R., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Wunderlich, C., Yamamoto, T., Zarić, D., Adams, C. B., Archer, A., Benbow, W., Brill, A., Buckley, J. H., Capasso, M., Christiansen, J. L., Chromey, A. J., Errando, M., Falcone, A., Farrell, A., Feng, Q., Foote, G. M., Fortson, L., Furniss, A., Gent, A., Gillanders, G. H., Gueta, O., Hanna, D., Hervet, O., Holder, J., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kleiner, T. K., Kumar, S., Lang, M. J., Lundy, M., Maier, G., Mcgrath, C. E., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O’brien, S., Ong, R. A., Otte, A. N., Patel, S. R., Patel, S., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Roache, E., Ryan, J. L., Sadeh, I., Santander, M., Sembroski, G. H., Shang, R., Tak, D., Vassiliev, V. V., Weinstein, A., Williams, D. A., Williamson, T. J., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Hess, HAWC, VERITAS, MAGIC, H.E.S.S., Fermi-LAT, Naurois , Mathieu, Ona-Wilhelmi , Emma, and Bony , Mathieu

Subjects
data analysis method, talk: Berlin 2021/07/15, FOS: Physical sciences, dark matter: signature, dark matter: direct detection, WIMP: dark matter, channel cross section: upper limit, annihilation [dark matter], GLAST, High Energy Physics - Experiment, dark matter [WIMP], WIMP: annihilation, High Energy Physics - Experiment (hep-ex), Tellurium compounds, Germanium compounds, HESS, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Dark Matter, ddc:530, annihilation [WIMP], ComputingMilieux_MISCELLANEOUS, direct detection [dark matter], High Energy Astrophysical Phenomena (astro-ph.HE), energy: high, upper limit [channel cross section], background, Gamma rays, dark matter: annihilation, Berlin 2021/07/15 [talk], sensitivity, Galaxies, Maximum likelihood estimation, MAGIC, mass dependence, Dark matter searches, high [energy], VERITAS, galaxy, signature [dark matter], Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], HAWC, experimental results
Abstract

Cosmological and astrophysical observations suggest that 85% of the total matter of the Universe is made of Dark Matter (DM). However, its nature remains one of the most challenging and fundamental open questions of particle physics. Assuming particle DM, this exotic form of matter cannot consist of Standard Model (SM) particles. Many models have been developed to attempt unraveling the nature of DM such as Weakly Interacting Massive Particles (WIMPs), the most favored particle candidates. WIMP annihilations and decay could produce SM particles which in turn hadronize and decay to give SM secondaries such as high energy γ rays. In the framework of indirect DM search, observations of promising targets are used to search for signatures of DM annihilation. Among these, the dwarf spheroidal galaxies (dSphs) are commonly favored owing to their expected high DM content and negligible astrophysical background. In this work, we present the very first combination of 20 dSph observations, performed by the Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS collaborations in order to maximize the sensitivity of DM searches and improve the current results. We use a joint maximum likelihood approach combining each experiment’s individual analysis to derive more constraining upper limits on the WIMP DM self-annihilation cross-section as a function of DM particle mass. We present new DM constraints over the widest mass range ever reported, extending from 5 GeV to 100 TeV thanks to the combination of these five different γ-ray instruments., PoS: Proceedings of Science, 395, ISSN:1824-8039, Proceedings of 37th International Cosmic Ray Conference

Published
2022
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32. Observation of the Gamma-Ray Binary HESS J0632+057 with the HESS, MAGIC, and VERITAS Telescopes

Author

Adams, Cb, Benbow, W, Brill, A, Buckley, Jh, Capasso, M, Chromey, Aj, Errando, M, Falcone, A, Farrell, Ka, Feng, Q, Finley, Jp, Foote, Gm, Fortson, L, Furniss, A, Gent, A, Gillanders, Gh, Giuri, C, Gueta, O, Hanna, D, Hassan, T, Hervet, O, Holder, J, Hona, B, Humensky, Tb, Jin, W, Kaaret, P, Kertzman, M, Kieda, D, Kleiner, Tk, Krennrich, F, Kumar, S, Lang, Mj, Lundy, M, Maier, G, Mcgrath, Ce, Moriarty, P, Mukherjee, R, Nieto, D, Nievas-Rosillo, M, O'Brien, S, Ong, Ra, Otte, An, Park, N, Patel, S, Pfrang, K, Pichel, A, Pohl, M, Prado, Rr, Quinn, J, Ragan, K, Reynolds, Pt, Ribeiro, D, Roache, E, Rovero, Ac, Ryan, Jl, Santander, M, Schlenstedt, S, Sembroski, Gh, Shang, R, Tak, D, Vassiliev, Vv, Weinstein, A, Williams, Da, Williamson, Tj, Acciari, Va, Ansoldi, S, Antonelli, La, Engels, Aa, Artero, M, Asano, K, Baack, D, Babic, A, Baquero, A, de Almeida, Ub, Barrio, Ja, Batkovic, I, Gonzalez, Jb, Bednarek, W, Bellizzi, L, Bernardini, E, Bernardos, M, Berti, A, Besenrieder, J, Bhattacharyya, W, Bigongiari, C, Biland, A, Blanch, O, Bokenkamp, H, Bonnoli, G, Busetto, G, Bosnjak, Z, Carosi, R, Ceribella, G, Cerruti, M, Chai, Y, Chilingarian, A, Cikota, S, Colak, Sm, Colombo, E, Contreras, Jl, Cortina, J, Covino, S, D'Amico, G, D'Elia, V, Da Vela, P, Dazzi, F, De Angelis, A, De Lotto, B, Delfino, M, Delgado, J, Mendez, Cd, Depaoli, D, Di Pierro, F, Di Venere, L, Espineira, Ed, Prester, Dd, Donini, A, Dorner, D, Doro, M, Elsaesser, D, Ramazani, Vf, Fattorini, A, Fonseca, Mv, Font, L, Fruck, C, Fukami, S, Fukazawa, Y, Lopez, Rjg, Garczarczyk, M, Gasparyan, S, Gaug, M, Giglietto, N, Giordano, F, Gliwny, P, Godinovic, N, Green, Jg, Green, D, Hadasch, D, Hahn, A, Heckmann, L, Herrera, J, Hoang, J, Hrupec, D, Hutten, M, Inada, T, Ishio, K, Iwamura, Y, Martinez, Ij, Jormanainen, J, Jouvin, L, Karjalainen, M, Kerszberg, D, Kobayashi, Y, Kubo, H, Kushida, J, Lamastra, A, Lelas, D, Leone, F, Lindfors, E, Linhoff, L, Lombardi, S, Longo, F, Lopez-Coto, R, Lopez-Moya, M, Lopez-Oramas, A, Loporchio, S, Fraga, Bmd, Maggio, C, Majumdar, P, Makariev, M, Mallamaci, M, Maneva, G, Manganaro, M, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Menchiari, S, Mender, S, Micanovic, S, Miceli, D, Miener, T, Miranda, Jm, Mirzoyan, R, Molina, E, Moralejo, A, Morcuende, D, Moreno, V, Moretti, E, Nakamori, T, Nava, L, Neustroev, V, Nigro, C, Nilsson, K, Nishijima, K, Noda, K, Nozaki, S, Ohtani, Y, Oka, T, Otero-Santos, J, Paiano, S, Palatiello, M, Paneque, D, Paoletti, R, Paredes, Jm, Pavletic, L, Penil, P, Persic, M, Pihet, M, Moroni, Pgp, Prandini, E, Priyadarshi, C, Puljak, I, Rhode, W, Ribo, M, Rico, J, Righi, C, Rugliancich, A, Saha, L, Sahakyan, N, Saito, T, Sakurai, S, Satalecka, K, Saturni, Fg, Schleicher, B, Schmidt, K, Schweizer, T, Sitarek, J, Sobczynska, D, Spolon, A, Stamerra, A, Striskovic, J, Strom, D, Strzys, M, Suda, Y, Suric, T, Takahashi, M, Takeishi, R, Tavecchio, F, Temnikov, P, Terzic, T, Teshima, M, Tosti, L, Truzzi, S, Tutone, A, Ubach, S, van Scherpenberg, J, Vanzo, G, Acosta, Mv, Ventura, S, Verguilov, V, Vigorito, Cf, Vitale, V, Vovk, I, Will, M, Wunderlich, C, Yamamoto, T, Zaric, D, Abdalla, H, Aharonian, F, Benkhali, Fa, Anguner, Eo, Arcaro, C, Ashkar, H, Backes, M, Martins, Vb, Barnard, M, Batzofin, R, Becherini, Y, Berge, D, Bernlohr, K, Bi, B, Bottcher, M, Boisson, C, Bolmont, J, de Lavergne, Md, Breuhaus, M, Brose, R, Brun, F, Bulik, T, Caroff, S, Casanova, S, Chand, T, Chen, A, Cotter, G, Mbarubucyeye, Jd, Devin, J, Djannati-Atai, A, Egberts, K, Ernenwein, Jp, Fegan, S, Fiasson, A, de Clairfontaine, Gf, Fontaine, G, Fussling, M, Funk, S, Gabici, S, Giavitto, G, Glawion, D, Glicenstein, Jf, Grondin, Mh, Hinton, Ja, Hofmann, W, Holch, Tl, Holler, M, Horns, D, Huang, Zq, Jamrozy, M, Jankowsky, F, Joshi, V, Jung-Richardt, I, Kasai, E, Katarzynski, K, Khelifi, B, Komin, N, Kosack, K, Kostunin, D, Le Stum, S, Lemiere, A, Lenain, Jp, Leuschner, F, Levy, C, Lohse, T, Luashvili, A, Lypova, I, Mackey, J, Majumdar, J, Malyshev, D, Marandon, V, Marchegiani, P, Marcowith, A, Marti-Devesa, G, Marx, R, Maurin, G, Meintjes, Pj, Mitchell, A, Moderski, R, Mohrmann, L, Montanari, A, Moulin, E, Muller, J, Murach, T, de Naurois, M, Nayerhoda, A, Niemiec, J, Noel, Ap, O'Brien, P, Ohm, S, Olivera-Nieto, L, Wilhelmi, Ed, Ostrowski, M, Panny, S, Panter, M, Parsons, Rd, Peron, G, Poireau, V, Prokhorov, Da, Prokoph, H, Puhlhofer, G, Punch, M, Quirrenbach, A, Reichherzer, P, Reimer, A, Reimer, O, Renaud, M, Rieger, F, Romoli, C, Rowell, G, Rudak, B, Ricarte, Hr, Ruiz-Velasco, E, Sahakian, V, Sailer, S, Salzmann, H, Sanchez, Da, Santangelo, A, Sasaki, M, Schutte, Hm, Schwanke, U, Schussler, F, Senniappan, M, Shapopi, Jns, Simoni, R, Sol, H, Specovius, A, Spencer, S, Steenkamp, R, Steinmassl, S, Sun, L, Takahashi, T, Tanaka, T, Terrier, R, Tsuji, N, Uchiyama, Y, van Eldik, C, van Soelen, B, Veh, J, Venter, C, Vink, J, Wagner, Sj, White, R, Wierzcholska, A, Wong, Yw, Zacharias, M, Zargaryan, D, Zdziarski, Aa, Zech, A, Zhu, Sj, Zouari, S, Zywucka, N, Moritani, Y, Torres, Df, Adams, Cb, Benbow, W, Brill, A, Buckley, Jh, Capasso, M, Chromey, Aj, Errando, M, Falcone, A, Farrell, Ka, Feng, Q, Finley, Jp, Foote, Gm, Fortson, L, Furniss, A, Gent, A, Gillanders, Gh, Giuri, C, Gueta, O, Hanna, D, Hassan, T, Hervet, O, Holder, J, Hona, B, Humensky, Tb, Jin, W, Kaaret, P, Kertzman, M, Kieda, D, Kleiner, Tk, Krennrich, F, Kumar, S, Lang, Mj, Lundy, M, Maier, G, Mcgrath, Ce, Moriarty, P, Mukherjee, R, Nieto, D, Nievas-Rosillo, M, O'Brien, S, Ong, Ra, Otte, An, Park, N, Patel, S, Pfrang, K, Pichel, A, Pohl, M, Prado, Rr, Quinn, J, Ragan, K, Reynolds, Pt, Ribeiro, D, Roache, E, Rovero, Ac, Ryan, Jl, Santander, M, Schlenstedt, S, Sembroski, Gh, Shang, R, Tak, D, Vassiliev, Vv, Weinstein, A, Williams, Da, Williamson, Tj, Acciari, Va, Ansoldi, S, Antonelli, La, Engels, Aa, Artero, M, Asano, K, Baack, D, Babic, A, Baquero, A, de Almeida, Ub, Barrio, Ja, Batkovic, I, Gonzalez, Jb, Bednarek, W, Bellizzi, L, Bernardini, E, Bernardos, M, Berti, A, Besenrieder, J, Bhattacharyya, W, Bigongiari, C, Biland, A, Blanch, O, Bokenkamp, H, Bonnoli, G, Busetto, G, Bosnjak, Z, Carosi, R, Ceribella, G, Cerruti, M, Chai, Y, Chilingarian, A, Cikota, S, Colak, Sm, Colombo, E, Contreras, Jl, Cortina, J, Covino, S, D'Amico, G, D'Elia, V, Da Vela, P, Dazzi, F, De Angelis, A, De Lotto, B, Delfino, M, Delgado, J, Mendez, Cd, Depaoli, D, Di Pierro, F, Di Venere, L, Espineira, Ed, Prester, Dd, Donini, A, Dorner, D, Doro, M, Elsaesser, D, Ramazani, Vf, Fattorini, A, Fonseca, Mv, Font, L, Fruck, C, Fukami, S, Fukazawa, Y, Lopez, Rjg, Garczarczyk, M, Gasparyan, S, Gaug, M, Giglietto, N, Giordano, F, Gliwny, P, Godinovic, N, Green, Jg, Green, D, Hadasch, D, Hahn, A, Heckmann, L, Herrera, J, Hoang, J, Hrupec, D, Hutten, M, Inada, T, Ishio, K, Iwamura, Y, Martinez, Ij, Jormanainen, J, Jouvin, L, Karjalainen, M, Kerszberg, D, Kobayashi, Y, Kubo, H, Kushida, J, Lamastra, A, Lelas, D, Leone, F, Lindfors, E, Linhoff, L, Lombardi, S, Longo, F, Lopez-Coto, R, Lopez-Moya, M, Lopez-Oramas, A, Loporchio, S, Fraga, Bmd, Maggio, C, Majumdar, P, Makariev, M, Mallamaci, M, Maneva, G, Manganaro, M, Mannheim, K, Maraschi, L, Mariotti, M, Martinez, M, Mazin, D, Menchiari, S, Mender, S, Micanovic, S, Miceli, D, Miener, T, Miranda, Jm, Mirzoyan, R, Molina, E, Moralejo, A, Morcuende, D, Moreno, V, Moretti, E, Nakamori, T, Nava, L, Neustroev, V, Nigro, C, Nilsson, K, Nishijima, K, Noda, K, Nozaki, S, Ohtani, Y, Oka, T, Otero-Santos, J, Paiano, S, Palatiello, M, Paneque, D, Paoletti, R, Paredes, Jm, Pavletic, L, Penil, P, Persic, M, Pihet, M, Moroni, Pgp, Prandini, E, Priyadarshi, C, Puljak, I, Rhode, W, Ribo, M, Rico, J, Righi, C, Rugliancich, A, Saha, L, Sahakyan, N, Saito, T, Sakurai, S, Satalecka, K, Saturni, Fg, Schleicher, B, Schmidt, K, Schweizer, T, Sitarek, J, Sobczynska, D, Spolon, A, Stamerra, A, Striskovic, J, Strom, D, Strzys, M, Suda, Y, Suric, T, Takahashi, M, Takeishi, R, Tavecchio, F, Temnikov, P, Terzic, T, Teshima, M, Tosti, L, Truzzi, S, Tutone, A, Ubach, S, van Scherpenberg, J, Vanzo, G, Acosta, Mv, Ventura, S, Verguilov, V, Vigorito, Cf, Vitale, V, Vovk, I, Will, M, Wunderlich, C, Yamamoto, T, Zaric, D, Abdalla, H, Aharonian, F, Benkhali, Fa, Anguner, Eo, Arcaro, C, Ashkar, H, Backes, M, Martins, Vb, Barnard, M, Batzofin, R, Becherini, Y, Berge, D, Bernlohr, K, Bi, B, Bottcher, M, Boisson, C, Bolmont, J, de Lavergne, Md, Breuhaus, M, Brose, R, Brun, F, Bulik, T, Caroff, S, Casanova, S, Chand, T, Chen, A, Cotter, G, Mbarubucyeye, Jd, Devin, J, Djannati-Atai, A, Egberts, K, Ernenwein, Jp, Fegan, S, Fiasson, A, de Clairfontaine, Gf, Fontaine, G, Fussling, M, Funk, S, Gabici, S, Giavitto, G, Glawion, D, Glicenstein, Jf, Grondin, Mh, Hinton, Ja, Hofmann, W, Holch, Tl, Holler, M, Horns, D, Huang, Zq, Jamrozy, M, Jankowsky, F, Joshi, V, Jung-Richardt, I, Kasai, E, Katarzynski, K, Khelifi, B, Komin, N, Kosack, K, Kostunin, D, Le Stum, S, Lemiere, A, Lenain, Jp, Leuschner, F, Levy, C, Lohse, T, Luashvili, A, Lypova, I, Mackey, J, Majumdar, J, Malyshev, D, Marandon, V, Marchegiani, P, Marcowith, A, Marti-Devesa, G, Marx, R, Maurin, G, Meintjes, Pj, Mitchell, A, Moderski, R, Mohrmann, L, Montanari, A, Moulin, E, Muller, J, Murach, T, de Naurois, M, Nayerhoda, A, Niemiec, J, Noel, Ap, O'Brien, P, Ohm, S, Olivera-Nieto, L, Wilhelmi, Ed, Ostrowski, M, Panny, S, Panter, M, Parsons, Rd, Peron, G, Poireau, V, Prokhorov, Da, Prokoph, H, Puhlhofer, G, Punch, M, Quirrenbach, A, Reichherzer, P, Reimer, A, Reimer, O, Renaud, M, Rieger, F, Romoli, C, Rowell, G, Rudak, B, Ricarte, Hr, Ruiz-Velasco, E, Sahakian, V, Sailer, S, Salzmann, H, Sanchez, Da, Santangelo, A, Sasaki, M, Schutte, Hm, Schwanke, U, Schussler, F, Senniappan, M, Shapopi, Jn, Simoni, R, Sol, H, Specovius, A, Spencer, S, Steenkamp, R, Steinmassl, S, Sun, L, Takahashi, T, Tanaka, T, Terrier, R, Tsuji, N, Uchiyama, Y, van Eldik, C, van Soelen, B, Veh, J, Venter, C, Vink, J, Wagner, Sj, White, R, Wierzcholska, A, Wong, Yw, Zacharias, M, Zargaryan, D, Zdziarski, Aa, Zech, A, Zhu, Sj, Zouari, S, Zywucka, N, Moritani, Y, and Torres, Df

Subjects
Gamma ray, binaries
Abstract

The results of gamma-ray observations of the binary system HESS J0632 + 057 collected during 450 hr over 15 yr, between 2004 and 2019, are presented. Data taken with the atmospheric Cherenkov telescopes H.E.S.S., MAGIC, and VERITAS at energies above 350 GeV were used together with observations at X-ray energies obtained with Swift-XRT, Chandra, XMM-Newton, NuSTAR, and Suzaku. Some of these observations were accompanied by measurements of the H alpha emission line. A significant detection of the modulation of the very high-energy gamma-ray fluxes with a period of 316.7 +/- 4.4 days is reported, consistent with the period of 317.3 +/- 0.7 days obtained with a refined analysis of X-ray data. The analysis of data from four orbital cycles with dense observational coverage reveals short-timescale variability, with flux-decay timescales of less than 20 days at very high energies. Flux variations observed over a timescale of several years indicate orbit-to-orbit variability. The analysis confirms the previously reported correlation of X-ray and gamma-ray emission from the system at very high significance, but cannot find any correlation of optical H alpha parameters with fluxes at X-ray or gamma-ray energies in simultaneous observations. The key finding is that the emission of HESS J0632 + 057 in the X-ray and gamma-ray energy bands is highly variable on different timescales. The ratio of gamma-ray to X-ray flux shows the equality or even dominance of the gamma-ray energy range. This wealth of new data is interpreted taking into account the insufficient knowledge of the ephemeris of the system, and discussed in the context of results reported on other gamma-ray binary systems.

Published
2021

33. The throughput calibration of the VERITAS telescopes

Author

Adams, C. B., primary, Benbow, W., additional, Brill, A., additional, Buckley, J. H., additional, Christiansen, J. L., additional, Falcone, A., additional, Feng, Q., additional, Finley, J. P., additional, Foote, G. M., additional, Fortson, L., additional, Furniss, A., additional, Giuri, C., additional, Hanna, D., additional, Hassan, T., additional, Hervet, O., additional, Holder, J., additional, Hona, B., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kleiner, T. K., additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, Moriarty, P., additional, Mukherjee, R., additional, Nievas Rosillo, M., additional, O’Brien, S., additional, Park, N., additional, Patel, S., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R. R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Roache, E., additional, Ryan, J. L., additional, Santander, M., additional, Weinstein, A., additional, Williams, D. A., additional, and Williamson, T. J., additional

Published
2022
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34. Variability and Spectral Characteristics of Three Flaring Gamma-Ray Quasars Observed by VERITAS and Fermi-LAT

Author

Adams, C. B., primary, Batshoun, J., additional, Benbow, W., additional, Brill, A., additional, Buckley, J. H., additional, Capasso, M., additional, Cavins, B., additional, Christiansen, J. L., additional, Coppi, P., additional, Errando, M., additional, Farrell, K. A, additional, Feng, Q., additional, Finley, J. P., additional, Foote, G. M., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Giuri, C., additional, Hanna, D., additional, Hassan, T., additional, Hervet, O., additional, Holder, J., additional, Houck, M., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, Krennrich, F., additional, Kumar, S., additional, Lundy, M., additional, Maier, G., additional, McGrath, C. E, additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Oppenheimer, A., additional, Otte, A. N., additional, Patel, S., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R. R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Rhatigan, A., additional, Ribeiro, D., additional, Roache, E., additional, Ryan, J. L., additional, Santander, M., additional, Sembroski, G. H., additional, Williams, D. A., additional, Williamson, T. J, additional, Valverde, J., additional, Horan, D., additional, Buson, S., additional, Cheung, C. C., additional, Ciprini, S., additional, Gasparrini, D., additional, Ojha, R., additional, van Zyl, P., additional, and Sironi, L., additional

Published
2022
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35. Multiwavelength Observation Campaign of the TeV Gamma-Ray Binary HESS J0632 + 057 with NuSTAR, VERITAS, MDM, and Swift

Author

Tokayer, Y. M., primary, An, H., additional, Halpern, J. P., additional, Kim, J., additional, Mori, K., additional, Hailey, C. J., additional, Adams, C. B., additional, Benbow, W., additional, Brill, A., additional, Buckley, J. H., additional, Capasso, M., additional, Errando, M., additional, Falcone, A., additional, Farrell, K. A, additional, Foote, G. M, additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Giuri, C., additional, Hanna, D., additional, Hassan, T., additional, Hervet, O., additional, Holder, J., additional, Hona, B., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, Lang, M. J., additional, Maier, G., additional, McGrath, C. E, additional, Moriarty, P., additional, Mukherjee, R., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, A. N., additional, Park, N., additional, Patel, S., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R. R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Roache, E., additional, Ryan, J. L., additional, Santander, M., additional, Schlenstedt, S., additional, Sembroski, G. H., additional, Weinstein, A., additional, Williams, D. A., additional, and Williamson, T. J, additional

Published
2021
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36. Observation of the Gamma-Ray Binary HESS J0632+057 with the H.E.S.S., MAGIC, and VERITAS Telescopes

Author

Adams, C. B., primary, Benbow, W., additional, Brill, A., additional, Buckley, J. H., additional, Capasso, M., additional, Chromey, A. J., additional, Errando, M., additional, Falcone, A., additional, A Farrell, K., additional, Feng, Q., additional, Finley, J. P., additional, M Foote, G., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Gillanders, G. H., additional, Giuri, C., additional, Gueta, O., additional, Hanna, D., additional, Hassan, T., additional, Hervet, O., additional, Holder, J., additional, Hona, B., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, K Kleiner, T., additional, Krennrich, F., additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, E McGrath, C., additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, A. N., additional, Park, N., additional, Patel, S., additional, Pfrang, K., additional, Pichel, A., additional, Pohl, M., additional, Prado, R. R., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Roache, E., additional, Rovero, A. C., additional, Ryan, J. L., additional, Santander, M., additional, Schlenstedt, S., additional, Sembroski, G. H., additional, Shang, R., additional, Tak, D., additional, Vassiliev, V. V., additional, Weinstein, A., additional, Williams, D. A., additional, J Williamson, T., additional, Acciari, V. A., additional, Ansoldi, S., additional, Antonelli, L. A., additional, Arbet Engels, A., additional, Artero, M., additional, Asano, K., additional, Baack, D., additional, Babić, A., additional, Baquero, A., additional, Barres de Almeida, U., additional, Barrio, J. A., additional, Batković, I., additional, Becerra González, J., additional, Bednarek, W., additional, Bellizzi, L., additional, Bernardini, E., additional, Bernardos, M., additional, Berti, A., additional, Besenrieder, J., additional, Bhattacharyya, W., additional, Bigongiari, C., additional, Biland, A., additional, Blanch, O., additional, Bökenkamp, H., additional, Bonnoli, G., additional, Bošnjak, Ž., additional, Busetto, G., additional, Carosi, R., additional, Ceribella, G., additional, Cerruti, M., additional, Chai, Y., additional, Chilingarian, A., additional, Cikota, S., additional, Colak, S. M., additional, Colombo, E., additional, Contreras, J. L., additional, Cortina, J., additional, Covino, S., additional, D’Amico, G., additional, D’Elia, V., additional, Da Vela, P., additional, Dazzi, F., additional, De Angelis, A., additional, De Lotto, B., additional, Delfino, M., additional, Delgado, J., additional, Delgado Mendez, C., additional, Depaoli, D., additional, Di Pierro, F., additional, Di Venere, L., additional, Do Souto Espiñeira, E., additional, Dominis Prester, D., additional, Donini, A., additional, Dorner, D., additional, Doro, M., additional, Elsaesser, D., additional, Fallah Ramazani, V., additional, Fattorini, A., additional, Fonseca, M. V., additional, Font, L., additional, Fruck, C., additional, Fukami, S., additional, Fukazawa, Y., additional, García López, R. J., additional, Garczarczyk, M., additional, Gasparyan, S., additional, Gaug, M., additional, Giglietto, N., additional, Giordano, F., additional, Gliwny, P., additional, Godinović, N., additional, Green, J. G., additional, Green, D., additional, Hadasch, D., additional, Hahn, A., additional, Heckmann, L., additional, Herrera, J., additional, Hoang, J., additional, Hrupec, D., additional, Hütten, M., additional, Inada, T., additional, Ishio, K., additional, Iwamura, Y., additional, Jiménez Martínez, I., additional, Jormanainen, J., additional, Jouvin, L., additional, Karjalainen, M., additional, Kerszberg, D., additional, Kobayashi, Y., additional, Kubo, H., additional, Kushida, J., additional, Lamastra, A., additional, Lelas, D., additional, Leone, F., additional, Lindfors, E., additional, Linhoff, L., additional, Lombardi, S., additional, Longo, F., additional, López-Coto, R., additional, López-Moya, M., additional, López-Oramas, A., additional, Loporchio, S., additional, Machado de Oliveira Fraga, B., additional, Maggio, C., additional, Majumdar, P., additional, Makariev, M., additional, Mallamaci, M., additional, Maneva, G., additional, Manganaro, M., additional, Mannheim, K., additional, Maraschi, L., additional, Mariotti, M., additional, Martínez, M., additional, Mazin, D., additional, Menchiari, S., additional, Mender, S., additional, Mićanović, S., additional, Miceli, D., additional, Miener, T., additional, Miranda, J. M., additional, Mirzoyan, R., additional, Molina, E., additional, Moralejo, A., additional, Morcuende, D., additional, Moreno, V., additional, Moretti, E., additional, Nakamori, T., additional, Nava, L., additional, Neustroev, V., additional, Nigro, C., additional, Nilsson, K., additional, Nishijima, K., additional, Noda, K., additional, Nozaki, S., additional, Ohtani, Y., additional, Oka, T., additional, Otero-Santos, J., additional, Paiano, S., additional, Palatiello, M., additional, Paneque, D., additional, Paoletti, R., additional, Paredes, J. M., additional, Pavletić, L., additional, Peñil, P., additional, Persic, M., additional, Pihet, M., additional, Prada Moroni, P. G., additional, Prandini, E., additional, Priyadarshi, C., additional, Puljak, I., additional, Rhode, W., additional, Ribó, M., additional, Rico, J., additional, Righi, C., additional, Rugliancich, A., additional, Saha, L., additional, Sahakyan, N., additional, Saito, T., additional, Sakurai, S., additional, Satalecka, K., additional, Saturni, F. G., additional, Schleicher, B., additional, Schmidt, K., additional, Schweizer, T., additional, Sitarek, J., additional, Šnidarić, I., additional, Sobczynska, D., additional, Spolon, A., additional, Stamerra, A., additional, Strišković, J., additional, Strom, D., additional, Strzys, M., additional, Suda, Y., additional, Surić, T., additional, Takahashi, M., additional, Takeishi, R., additional, Tavecchio, F., additional, Temnikov, P., additional, Terzić, T., additional, Teshima, M., additional, Tosti, L., additional, Truzzi, S., additional, Tutone, A., additional, Ubach, S., additional, van Scherpenberg, J., additional, Vanzo, G., additional, Vazquez Acosta, M., additional, Ventura, S., additional, Verguilov, V., additional, Vigorito, C. F., additional, Vitale, V., additional, Vovk, I., additional, Will, M., additional, Wunderlich, C., additional, Yamamoto, T., additional, Zarić, D., additional, Abdalla, H., additional, Aharonian, F., additional, Ait Benkhali, F., additional, Angüner, E. O., additional, Arcaro, C., additional, Ashkar, H., additional, Backes, M., additional, Barbosa Martins, V., additional, Barnard, M., additional, Batzofin, R., additional, Becherini, Y., additional, Berge, D., additional, Bernlöhr, K., additional, Bi, B., additional, Böttcher, M., additional, Boisson, C., additional, Bolmont, J., additional, de Bony de Lavergne, M., additional, Breuhaus, M., additional, Brose, R., additional, Brun, F., additional, Bulik, T., additional, Caroff, S., additional, Casanova, S., additional, Chand, T., additional, Chen, A., additional, Cotter, G., additional, Damascenev Mbarubucyeye, J., additional, Devin, J., additional, Djannati-Ataï, A., additional, Egberts, K., additional, Ernenwein, J.-P., additional, Fegan, S., additional, Fiasson, A., additional, Fichet de Clairfontaine, G., additional, Fontaine, G., additional, Füßling, M., additional, Funk, S., additional, Gabici, S., additional, Giavitto, G., additional, Glawion, D., additional, Glicenstein, J. F., additional, Grondin, M.-H., additional, Hinton, J. A., additional, Hofmann, W., additional, Holch, T. L., additional, Holler, M., additional, Horns, D., additional, Huang, Zhiqiu, additional, Jamrozy, M., additional, Jankowsky, F., additional, Joshi, V., additional, Jung-Richardt, I., additional, Kasai, E., additional, Katarzyński, K., additional, Khélifi, B., additional, Komin, Nu., additional, Kosack, K., additional, Kostunin, D., additional, Le Stum, S., additional, Lemière, A., additional, Lenain, J.-P., additional, Leuschner, F., additional, Levy, C., additional, Lohse, T., additional, Luashvili, A., additional, Lypova, I., additional, Mackey, J., additional, Majumdar, J., additional, Malyshev, D., additional, Marandon, V., additional, Marchegiani, P., additional, Marcowith, A., additional, Martí-Devesa, G., additional, Marx, R., additional, Maurin, G., additional, Meintjes, P. J., additional, Mitchell, A., additional, Moderski, R., additional, Mohrmann, L., additional, Montanari, A., additional, Moulin, E., additional, Muller, J., additional, Murach, T., additional, de Naurois, M., additional, Nayerhoda, A., additional, Niemiec, J., additional, Priyana Noel, A., additional, O’Brien, P., additional, Ohm, S., additional, Olivera-Nieto, L., additional, de Ona Wilhelmi, E., additional, Ostrowski, M., additional, Panny, S., additional, Panter, M., additional, Parsons, R. D., additional, Peron, G., additional, Poireau, V., additional, Prokhorov, D. A., additional, Prokoph, H., additional, Pühlhofer, G., additional, Punch, M., additional, Quirrenbach, A., additional, Reichherzer, P., additional, Reimer, A., additional, Reimer, O., additional, Renaud, M., additional, Rieger, F., additional, Romoli, C., additional, Rowell, G., additional, Rudak, B., additional, Rueda Ricarte, H., additional, Ruiz-Velasco, E., additional, Sahakian, V., additional, Sailer, S., additional, Salzmann, H., additional, Sanchez, D. A., additional, Santangelo, A., additional, Sasaki, M., additional, Schutte, H. M., additional, Schwanke, U., additional, Schüssler, F., additional, Senniappan, M., additional, Shapopi, J. N. S., additional, Simoni, R., additional, Sol, H., additional, Specovius, A., additional, Spencer, S., additional, Steenkamp, R., additional, Steinmassl, S., additional, Sun, L., additional, Takahashi, T., additional, Tanaka, T., additional, Terrier, R., additional, Tsuji, N., additional, Uchiyama, Y., additional, van Eldik, C., additional, van Soelen, B., additional, Veh, J., additional, Venter, C., additional, Vink, J., additional, Wagner, S. J., additional, White, R., additional, Wierzcholska, A., additional, Wun Wong, Yu, additional, Zacharias, M., additional, Zargaryan, D., additional, Zdziarski, A. A., additional, Zech, A., additional, Zhu, S. J., additional, Zouari, S., additional, Żywucka, N., additional, Moritani, Y., additional, and Torres, D. F., additional

Published
2021
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37. CTA – the World’s largest ground-based gamma-ray observatory

Author

Zanin, Roberta, primary, Abdalla, H., additional, Abe, H., additional, Abe, S., additional, Abusleme, A., additional, Acero, F., additional, Acharyya, A., additional, Acin Portella, V., additional, Ackley, K., additional, Adam, R., additional, Adams, C., additional, Adhikari, S.S., additional, Aguado Ruesga, I., additional, Agudo, I., additional, Aguilera, R., additional, Aguirre Santaella, A., additional, Aharonian, F., additional, Alberdi, A., additional, Alfaro, R., additional, Alfaro, J., additional, Alispach, C., additional, Aloisio, R., additional, Alves Batista, R., additional, Amans, J.P., additional, Amati, L., additional, Amato, E., additional, Ambrogi, L., additional, Ambrosi, G., additional, Ambrosio, M., additional, Ammendola, R., additional, Anderson, J., additional, Anduze, M., additional, Anguner, E.O., additional, Antonelli, L.A., additional, Antonuccio, V., additional, Antoranz, P., additional, Anutarawiramkul, R., additional, Aragunde Gutierrez, J., additional, Aramo, C., additional, Araudo, A., additional, Araya, M., additional, Arbet Engels, A., additional, Arcaro, C., additional, Arendt, V., additional, Armand, C., additional, Armstrong, T., additional, Arqueros, F., additional, Arrabito, L., additional, Arsioli, B., additional, Artero, M., additional, Asano, K., additional, Ascasibar, Y., additional, Aschersleben, J., additional, Ashley, M., additional, Attina, P., additional, Aubert, P., additional, B. Singh, C., additional, Baack, D., additional, Babic, A., additional, Backes, M., additional, Baena, V., additional, Bajtlik, S., additional, Baktash, A., additional, Balazs, C., additional, Balbo, M., additional, Ballester, O., additional, Ballet, J., additional, Balmaverde, B., additional, Bamba, A., additional, Bandiera, R., additional, Baquero Larriva, A., additional, Barai, P., additional, Barbier, C., additional, Barbosa Martins, V., additional, Barcelo, M., additional, Barkov, M., additional, Barnard, M., additional, Baroncelli, L., additional, Barres de Almeida, U., additional, Barrio, J.A., additional, Bastieri, D., additional, Batista, P.I., additional, Batkovic, I., additional, Bauer, C., additional, Bautista González, R., additional, Baxter, J., additional, Becciani, U., additional, Becerra González, J., additional, Becherini, Y., additional, Beck, G., additional, Becker Tjus, J., additional, Bednarek, W., additional, Belfiore, A., additional, Bellizzi, L., additional, Belmont, R., additional, Benbow, W., additional, Berge, D., additional, Bernardini, E., additional, Bernardos, M.I., additional, Bernlöhr, K., additional, Berti, A., additional, Berton, M., additional, Bertucci, B., additional, Beshley, V., additional, Bhatt, N., additional, Bhattacharyya, S., additional, Bhattacharyya, W., additional, Bi, B. Y., additional, Bicknell, G., additional, Biederbeck, N., additional, Bigongiari, C., additional, Biland, A., additional, Bird, R., additional, Bissaldi, E., additional, Biteau, J., additional, Bitossi, M., additional, Blanch, O., additional, Blank, M., additional, Blazek, J., additional, Bobin, J., additional, Boccato, C., additional, Bocchino, F., additional, Boehm, C., additional, Bohacova, M., additional, Boisson, C., additional, Boix, J., additional, Bolle, J.P., additional, Bolmont, J., additional, Bonanno, G., additional, Bonavolontà, C., additional, Bonneau Arbeletche, L., additional, Bonnoli, G., additional, Bordas, P., additional, Borkowski, J., additional, Bose, R., additional, Bose, D., additional, Bosnjak, Z., additional, Bottacini, E., additional, Böttcher, Markus, additional, Botticella, M.T., additional, Boutonnet, C., additional, Bouyjou, F., additional, Bozhilov, V., additional, Bozzo, E., additional, Brahimi, L., additional, Braiding, C., additional, Brau Nogue, S., additional, Breen, S., additional, Bregeon, J., additional, Breuhaus, M., additional, Brill, A., additional, Brisken, W., additional, Brocato, E., additional, Brown, A.M., additional, Brügge, K., additional, Brun, P., additional, Brun, F., additional, Brunetti, L., additional, Brunetti, G., additional, Bruno, P., additional, Bruno, A., additional, Bruzzese, A., additional, Bucciantini, N., additional, Buckley, J. H., additional, Bühler, R., additional, Bulgarelli, A., additional, Bulik, T., additional, Bünning, M., additional, Bunse, M., additional, Burton, M., additional, Burtovoi, A., additional, Buscemi, M., additional, Buschjager, S., additional, Busetto, G., additional, Buss, J., additional, Byrum, K., additional, Caccianiga, A., additional, Cadoux, F., additional, Calanducci, A., additional, Calderon, C., additional, Calvo Tovar, J., additional, Cameron, R. A., additional, Campana, P., additional, Canestrari, R., additional, Cangemi, F., additional, Cantlay, B., additional, Capalbi, M., additional, Capasso, M., additional, Cappi, M., additional, Caproni, A., additional, Capuzzo Dolcetta, R., additional, Caraveo, P., additional, Cárdenas, V., additional, Cardiel, L., additional, Cardillo, M., additional, Carlile, C., additional, Caroff, S., additional, Carosi, R., additional, Carosi, A., additional, Carquin, E., additional, Carrere, M., additional, Casandjian, J.M., additional, Casanova, S., additional, Cassol, F., additional, Catalani, F., additional, Catalano, O., additional, Cauz, D., additional, Ceccanti, A., additional, Celestino Silva, C., additional, Cerny, K., additional, Cerruti, M., additional, Chabanne, E., additional, Chadwick, P., additional, Chai, Y., additional, Chambery, P., additional, Champion, C., additional, Chaty, S., additional, Chen, A., additional, Cheng, K., additional, Chernyakova, M., additional, Chiaro, G., additional, Chiavassa, A., additional, Chikawa, M., additional, Chitnis, V.R., additional, Chudoba, J., additional, Chytka, L., additional, Cikota, S., additional, Circiello, A., additional, Clark, P., additional, Colak, M., additional, Colombo, E., additional, Colonges, S., additional, Comastri, A., additional, Compagnino, A., additional, Conforti, V., additional, Congiu, E., additional, Coniglione, R., additional, Conrad, J., additional, Conte, F., additional, Contreras, J.L., additional, Coppi, P., additional, Cornat, R., additional, Coronado Blazquez, J., additional, Cortina, J., additional, Costa, A., additional, Costantini, H., additional, Cotter, G., additional, Courty, B., additional, Covino, S., additional, Crestan, S., additional, Cristofari, P., additional, Crocker, R., additional, Croston, J., additional, Cubuk, K., additional, Cuevas, O., additional, Cui, X., additional, Cusumano, G., additional, Cutini, S., additional, D'Amico, G., additional, D'Ammando, F., additional, D'Avanzo, P., additional, Da Vela, P., additional, Dadina, M., additional, Dai, S., additional, Dalchenko, M., additional, Dall'Ora, M., additional, Daniel, M.K., additional, Dauguet, J., additional, Davids, I., additional, Davies, J., additional, Dawson, B., additional, De Angelis, A., additional, de Araujo Carvalho, A.E., additional, de Bony de Lavergne, M., additional, De Cesare, G., additional, de Frondat, F., additional, de la Calle, I., additional, de Gouveia Dal Pino, E., additional, De Lotto, B., additional, De Luca, A., additional, De Martino, D., additional, de Naurois, M., additional, de Ona Wilhelmi, E., additional, De Palma Persio, F., additional, De Simone, N., additional, de Souza Valle, V., additional, Delagnes, E., additional, Deleglise Reznicek, G., additional, Delgado, C., additional, Delgado Giler, A.G., additional, Delgado Mengual Valle, J., additional, della Volpe, D., additional, Depaoli, D., additional, Devin, J., additional, Di Girolamo, T., additional, Di Giulio Pierro, C., additional, Di Venere, L., additional, Díaz, C., additional, Dib, C., additional, Diebold, S., additional, Digel, S., additional, Djannati Atai, A., additional, Djuvsland, J., additional, Dmytriiev, A., additional, Docher, K., additional, Domínguez, A., additional, Dominis Prester, D., additional, Donini, A., additional, Dorner, D., additional, Doro, M., additional, dos Anjos, Rita Cassia, additional, Dournaux, J.L., additional, Downes, T., additional, Drake, G., additional, Drass, H., additional, Dravins, D., additional, Duangchan, C., additional, Duara, A., additional, Dubus, G., additional, Ducci, L., additional, Duffy, C., additional, Dumora, D., additional, Dundas Mora, K., additional, Durkalec, A., additional, Dwarkadas, V.V., additional, Ebr, J., additional, Eckner, C., additional, Eder, J., additional, Edy, E., additional, Egberts, K., additional, Einecke, S., additional, Eleftheriadis, C., additional, Elsässer, D., additional, Emery, G., additional, Emmanoulopoulos, D., additional, Ernenwein, J.P., additional, Errando, M., additional, Escarate, P., additional, Escudero, J., additional, Espinoza, C., additional, Ettori, S., additional, Eungwanichayapant, A., additional, Evans, P., additional, Evoli, C., additional, Fairbairn, M., additional, Falceta Goncalves, D., additional, Falcone, A., additional, Fallah Ramazanı, V., additional, Falomo, R., additional, Farakos, K., additional, Fasola, G., additional, Fattorini, A., additional, Favre, Y., additional, Fedora, R., additional, Fedorova, E., additional, Feijen, K., additional, Feng, Q., additional, Ferrand, G., additional, Ferrara, G., additional, Ferreira, O., additional, Fesquet, M., additional, Fiandrini, E., additional, Fiasson, A., additional, Filipovic, M., additional, Fink, D., additional, Finley, J.P., additional, Fioretti, V., additional, Fiorillo, D.F.G., additional, Fiorini, M., additional, Flis, S., additional, Flores, H., additional, Foffano, L., additional, Fohr, C., additional, Fonseca, M.V., additional, Font, L., additional, Fontaine, G., additional, Fornieri, O., additional, Fortin, P., additional, Fortson, L., additional, Fouque, N., additional, Fraga, B., additional, Franceschini, A., additional, Franco, F.J., additional, Freixas Coromina, L., additional, Fresnillo, L., additional, Fugazza, D., additional, Fujita, Y., additional, Fukami, S., additional, Fukazawa, Y., additional, Fulla, D., additional, Funk, S., additional, Furniss, A., additional, Gabici, S., additional, Gaggero, D., additional, Galanti, G., additional, Galdemard, P., additional, Gallant, Y. A., additional, Galloway, D., additional, Gallozzi, S., additional, Gammaldi, V., additional, Garcia, R., additional, García-Muñoz, L. E., additional, Garcia Lopez, E., additional, Gargano, F., additional, Gargano, C., additional, Garozzo, S., additional, Gascon, D., additional, Gasparetto, T., additional, Gasparrini, D., additional, Gasparyan, H., additional, Gaug, M., additional, Geffroy, N., additional, Gent, A., additional, Germani, S., additional, Ghalumyan, A., additional, Ghedina, A., additional, Ghirlanda, G., additional, Gianotti, F., additional, Giarrusso, S., additional, Giarrusso, M., additional, Giavitto, G., additional, Giebels, B., additional, Giglietto, N., additional, Gika, V., additional, Gillardo, F., additional, Gimenes, R., additional, Giordano, F., additional, Giro, E., additional, Giroletti, M., additional, Giuliani, Andrea, additional, Gjaja, M., additional, Glicenstein, J.F., additional, Gliwny, P., additional, Goksu, H., additional, Goldoni, P., additional, Gomez, J.L., additional, Gonzalez, M.M., additional, Gonzalez, J.M., additional, Gothe, K.S., additional, Gotz Coelho, D., additional, Grabarczyk, T., additional, Graciani, R., additional, Grandi, P., additional, Grasseau, G., additional, Grasso, D., additional, Green, D., additional, Green, J., additional, Greenshaw, T., additional, Grespan, P., additional, Grillo, A., additional, Grondin, M.H., additional, Grube, J., additional, Guarino, V., additional, Guest, B., additional, Gueta, O., additional, Günduz, M., additional, Gunji, S., additional, Gyuk, G., additional, Hackfeld, J., additional, Hadasch, D., additional, Hagge, L., additional, Hahn, A., additional, Hajlaoui, J.E., additional, Halim, A., additional, Hamal, P., additional, Hanlon, W., additional, Harada, Y., additional, Hardcastle, M.J., additional, Harvey Collado, M., additional, Haubold, T., additional, Haupt, A., additional, Havelka, M., additional, Hayashi, K., additional, Hayashida, M., additional, He, H., additional, Heckmann, L., additional, Heller, M., additional, Henault, F., additional, Henri, Gilles, additional, Hermann, G., additional, Hernández Cadena, S., additional, Herrera Llorente, J., additional, Hervet, O., additional, Hinton, J., additional, Hiramatsu, A., additional, Hirotani, K., additional, Hnatyk, B., additional, Hnatyk, R., additional, Hoang, J.K., additional, Hoffmann, D. 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2021
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38. Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

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Algaba, J.C. Anczarski, J. Asada, K. Baloković, M. Chandra, S. Cui, Y.-Z. Falcone, A.D. Giroletti, M. Goddi, C. Hada, K. Haggard, D. Jorstad, S. Kaur, A. Kawashima, T. Keating, G. Kim, J.-Y. Kino, M. Komossa, S. Kravchenko, E.V. Krichbaum, T.P. Lee, S.-S. Lu, R.-S. Lucchini, M. Markoff, S. Neilsen, J. Nowak, M.A. Park, J. Principe, G. Ramakrishnan, V. Reynolds, M.T. Sasada, M. Savchenko, S.S. Williamson, K.E. Akiyama, K. Alberdi, A. Alef, W. Anantua, R. Azulay, R. Baczko, A.-K. Ball, D. Barrett, J. Bintley, D. Benson, B.A. Blackburn, L. Blundell, R. Boland, W. Bouman, K.L. Bower, G.C. Boyce, H. Bremer, M. Brinkerink, C.D. Brissenden, R. Britzen, S. Broderick, A.E. Broguiere, D. Bronzwaer, T. Byun, D.-Y. Carlstrom, J.E. Chael, A. Chan, C.-K. Chatterjee, S. Chatterjee, K. Chen, M.-T. Chen, Y. Chesler, P.M. Cho, I. Christian, P. Conway, J.E. Cordes, J.M. Crawford, T.M. Crew, G.B. Cruz-Osorio, A. Davelaar, J. De Laurentis, M. Deane, R. Dempsey, J. Desvignes, G. Dexter, J. Doeleman, S.S. Eatough, R.P. Falcke, H. Farah, J. Fish, V.L. Fomalont, E. Ford, H.A. Fraga-Encinas, R. Friberg, P. Fromm, C.M. Fuentes, A. Galison, P. Gammie, C.F. García, R. Gentaz, O. Georgiev, B. Gold, R. Gómez, J.L. Gómez-Ruiz, A.I. Gu, M. Gurwell, M. Hecht, M.H. Hesper, R. Ho, L.C. Ho, P. Honma, M. Huang, C.-W.L. Huang, L. Hughes, D.H. Ikeda, S. Inoue, M. Issaoun, S. James, D.J. Jannuzi, B.T. Janssen, M. Jeter, B. Jiang, W. Jiménez-Rosales, A. Johnson, M.D. Jung, T. Karami, M. Karuppusamy, R. Kettenis, M. Kim, D.-J. Kim, J. Kim, J. Koay, J.Y. Kofuji, Y. Koch, P.M. Koyama, S. Kramer, M. Kramer, C. Kuo, C.-Y. Lauer, T.R. Levis, A. Li, Y.-R. Li, Z. Lindqvist, M. Lico, R. Lindahl, G. Liu, J. Liu, K. Liuzzo, E. Lo, W.-P. Lobanov, A.P. Loinard, L. Lonsdale, C. Macdonald, N.R. Mao, J. Marchili, N. Marrone, D.P. Marscher, A.P. Martí-Vidal, I. Matsushita, S. Matthews, L.D. Medeiros, L. Menten, K.M. Mizuno, I. Mizuno, Y. Moran, J.M. Moriyama, K. Moscibrodzka, M. Müller, C. Musoke, G. Mejías, A.M. Nagai, H. Nagar, N.M. Nakamura, M. Narayan, R. Narayanan, G. Natarajan, I. Nathanail, A. Neri, R. Ni, C. Noutsos, A. Okino, H. Olivares, H. Ortiz-León, G.N. Oyama, T. Ozel, F. Palumbo, D.C.M. Patel, N. Pen, U.-L. Pesce, D.W. Piétu, V. Plambeck, R. Popstefanija, A. Porth, O. Pötzl, F.M. Prather, B. Preciado-López, J.A. Psaltis, D. Pu, H.-Y. Rao, R. Rawlings, M.G. Raymond, A.W. Rezzolla, L. Ricarte, A. Ripperda, B. Roelofs, F. Rogers, A. Ros, E. Rose, M. Roshanineshat, A. Rottmann, H. Roy, A.L. Ruszczyk, C. Rygl, K.L.J. Sánchez, S. Sánchez-Arguelles, D. Savolainen, T. Schloerb, F.P. Schuster, K.-F. Shao, L. Shen, Z. Small, D. Sohn, B.W. Soohoo, J. Sun, H. Tazaki, F. Tetarenko, A.J. Tiede, P. Tilanus, R.P.J. Titus, M. Toma, K. Torne, P. Trent, T. Traianou, E. Trippe, S. Van Bemmel, I. Van Langevelde, H.J. Van Rossum, D.R. Wagner, J. Ward-Thompson, D. Wardle, J. Weintroub, J. Wex, N. Wharton, R. Wielgus, M. Wong, G.N. Wu, Q. Yoon, D. Young, A. Young, K. Younsi, Z. Yuan, F. Yuan, Y.-F. Zensus, J.A. Zhao, G.-Y. Zhao, S.-S. Principe, G. Giroletti, M. D'Ammando, F. Orienti, M. Abdalla, H. Adam, R. Aharonian, F. Benkhali, F.A. Angüner, E.O. Arcaro, C. Armand, C. Armstrong, T. Ashkar, H. Backes, M. Baghmanyan, V. Barbosa Martins, V. Barnacka, A. Barnard, M. Becherini, Y. Berge, D. Bernlöhr, K. Bi, B. Böttcher, M. Boisson, C. Bolmont, J. De Bony De Lavergne, M. Breuhaus, M. Brun, F. Brun, P. Bryan, M. Büchele, M. Bulik, T. Bylund, T. Caroff, S. Carosi, A. Casanova, S. Chand, T. Chen, A. Cotter, G. Curyło, M. Damascene Mbarubucyeye, J. Davids, I.D. Davies, J. Deil, C. Devin, J. Dewilt, P. Dirson, L. Djannati-Ataï, A. Dmytriiev, A. Donath, A. Doroshenko, V. Duffy, C. Dyks, J. Egberts, K. Eichhorn, F. Einecke, S. Emery, G. Ernenwein, J.-P. Feijen, K. Fegan, S. Fiasson, A. De Clairfontaine, G.F. Fontaine, G. Funk, S. Füßling, M. Gabici, S. Gallant, Y.A. Giavitto, G. Giunti, L. Glawion, D. Glicenstein, J.F. Gottschall, D. Grondin, M.-H. Hahn, J. Haupt, M. Hermann, G. Hinton, J.A. Hofmann, W. Hoischen, C. Holch, T.L. Holler, M. Hörbe, M. Horns, D. Huber, D. Jamrozy, M. Jankowsky, D. Jankowsky, F. Jardin-Blicq, A. Joshi, V. Jung-Richardt, I. Kasai, E. Kastendieck, M.A. Katarzyński, K. Katz, U. Khangulyan, D. Khélifi, B. Klepser, S. Kluźniak, W. Komin, N. Konno, R. Kosack, K. Kostunin, D. Kreter, M. Lamanna, G. Lemiere, A. Lemoine-Goumard, M. Lenain, J.-P. Levy, C. Lohse, T. Lypova, I. Mackey, J. Majumdar, J. Malyshev, D. Malyshev, D. Marandon, V. Marchegiani, P. Marcowith, A. Mares, A. Martí-Devesa, G. Marx, R. Maurin, G. Meintjes, P.J. Meyer, M. Moderski, R. Mohamed, M. Mohrmann, L. Montanari, A. Moore, C. Morris, P. Moulin, E. Muller, J. Murach, T. Nakashima, K. Nayerhoda, A. De Naurois, M. Ndiyavala, H. Niederwanger, F. Niemiec, J. Oakes, L. O'Brien, P. Odaka, H. Ohm, S. Olivera-Nieto, L. De Ona Wilhelmi, E. Ostrowski, M. Panter, M. Panny, S. Parsons, R.D. Peron, G. Peyaud, B. Piel, Q. Pita, S. Poireau, V. Noel, A.P. Prokhorov, D.A. Prokoph, H. Pühlhofer, G. Punch, M. Quirrenbach, A. Rauth, R. Reichherzer, P. Reimer, A. Reimer, O. Remy, Q. Renaud, M. Rieger, F. Rinchiuso, L. Romoli, C. Rowell, G. Rudak, B. Ruiz-Velasco, E. Sahakian, V. Sailer, S. Sanchez, D.A. Santangelo, A. Sasaki, M. Scalici, M. Schutte, H.M. Schwanke, U. Schwemmer, S. Seglar-Arroyo, M. Senniappan, M. Seyffert, A.S. Shafi, N. Shiningayamwe, K. Simoni, R. Sinha, A. Sol, H. Specovius, A. Spencer, S. Spir-Jacob, M. Stawarz, Ł. Sun, L. Steenkamp, R. Stegmann, C. Steinmassl, S. Steppa, C. Takahashi, T. Tavernier, T. Taylor, A.M. Terrier, R. Tiziani, D. Tluczykont, M. Tomankova, L. Trichard, C. Tsirou, M. Tuffs, R. Uchiyama, Y. Van Der Walt, D.J. Van Eldik, C. Van Rensburg, C. Van Soelen, B. Vasileiadis, G. Veh, J. Venter, C. Vincent, P. Vink, J. Völk, H.J. Vuillaume, T. Wadiasingh, Z. Wagner, S.J. Watson, J. Werner, F. White, R. Wierzcholska, A. Wong, Y.W. Yusafzai, A. Zacharias, M. Zanin, R. Zargaryan, D. Zdziarski, A.A. Zech, A. Zhu, S.J. Zorn, J. Zouari, S. Żywucka, N. Acciari, V.A. Ansoldi, S. Antonelli, L.A. Engels, A.A. Artero, M. Asano, K. Baack, D. Babić, A. Baquero, A. De Almeida, U.B. Barrio, J.A. Becerra González, J. Bednarek, W. Bellizzi, L. Bernardini, E. Bernardos, M. Berti, A. Besenrieder, J. Bhattacharyya, W. Bigongiari, C. Biland, A. Blanch, O. Bonnoli, G. Bošnjak, Ž. Busetto, G. Carosi, R. Ceribella, G. Cerruti, M. Chai, Y. Chilingarian, A. Cikota, S. Colak, S.M. Colombo, E. Contreras, J.L. Cortina, J. Covino, S. D'Amico, G. D'Elia, V. Da Vela, P. Dazzi, F. De Angelis, A. De Lotto, B. Delfino, M. Delgado, J. Delgado Mendez, C. Depaoli, D. Di Pierro, F. Di Venere, L. Do Souto Espineira, E. Dominis Prester, D. Donini, A. Dorner, D. Doro, M. Elsaesser, D. Fallah Ramazani, V. Fattorini, A. Ferrara, G. Fonseca, M.V. Font, L. Fruck, C. Fukami, S. García López, R.J. Garczarczyk, M. Gasparyan, S. Gaug, M. Giglietto, N. Giordano, F. Gliwny, P. Godinović, N. Green, J.G. Green, D. Hadasch, D. Hahn, A. Heckmann, L. Herrera, J. Hoang, J. Hrupec, D. Hütten, M. Inada, T. Inoue, S. Ishio, K. Iwamura, Y. Jiménez, I. Jormanainen, J. Jouvin, L. Kajiwara, Y. Karjalainen, M. Kerszberg, D. Kobayashi, Y. Kubo, H. Kushida, J. Lamastra, A. Lelas, D. Leone, F. Lindfors, E. Lombardi, S. Longo, F. López-Coto, R. López-Moya, M. López-Oramas, A. Loporchio, S. Machado De Oliveira Fraga, B. Maggio, C. Majumdar, P. Makariev, M. Mallamaci, M. Maneva, G. Manganaro, M. Mannheim, K. Maraschi, L. Mariotti, M. Martínez, M. Mazin, D. Menchiari, S. Mender, S. Mićanović, S. Miceli, D. Miener, T. Minev, M. Miranda, J.M. Mirzoyan, R. Molina, E. Moralejo, A. Morcuende, D. Moreno, V. Moretti, E. Neustroev, V. Nigro, C. Nilsson, K. Nishijima, K. Noda, K. Nozaki, S. Ohtani, Y. Oka, T. Otero-Santos, J. Paiano, S. Palatiello, M. Paneque, D. Paoletti, R. Paredes, J.M. Pavletić, L. Penil, P. Perennes, C. Persic, M. Moroni, P.G.P. Prandini, E. Priyadarshi, C. Puljak, I. Rhode, W. Ribó, M. Rico, J. Righi, C. Rugliancich, A. Saha, L. Sahakyan, N. Saito, T. Sakurai, S. Satalecka, K. Saturni, F.G. Schleicher, B. Schmidt, K. Schweizer, T. Sitarek, J. Šnidarić, I. Sobczynska, D. Spolon, A. Stamerra, A. Strom, D. Strzys, M. Suda, Y. Surić, T. Takahashi, M. Tavecchio, F. Temnikov, P. Terzić, T. Teshima, M. Tosti, L. Truzzi, S. Tutone, A. Ubach, S. Van Scherpenberg, J. Vanzo, G. Vazquez Acosta, M. Ventura, S. Verguilov, V. Vigorito, C.F. Vitale, V. Vovk, I. Will, M. Wunderlich, C. Zarić, D. Adams, C.B. Benbow, W. Brill, A. Capasso, M. Christiansen, J.L. Chromey, A.J. Daniel, M.K. Errando, M. Farrell, K.A. Feng, Q. Finley, J.P. Fortson, L. Furniss, A. Gent, A. Giuri, C. Hassan, T. Hervet, O. Holder, J. Hughes, G. Humensky, T.B. Jin, W. Kaaret, P. Kertzman, M. Kieda, D. Kumar, S. Lang, M.J. Lundy, M. Maier, G. Moriarty, P. Mukherjee, R. Nieto, D. Nievas-Rosillo, M. O'Brien, S. Ong, R.A. Otte, A.N. Patel, S. Pfrang, K. Pohl, M. Prado, R.R. Pueschel, E. Quinn, J. Ragan, K. Reynolds, P.T. Ribeiro, D. Richards, G.T. Roache, E. Rulten, C. Ryan, J.L. Santander, M. Sembroski, G.H. Shang, R. Weinstein, A. Williams, D.A. Williamson, T.J. Hirota, T. Cui, L. Niinuma, K. Ro, H. Sakai, N. Sawada-Satoh, S. Wajima, K. Wang, N. Liu, X. Yonekura, Y.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics
Abstract

In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for a weakly accreting supermassive black hole of mass ∼6.5 × 109 M o˙. The EHTC also partnered with several international facilities in space and on the ground, to arrange an extensive, quasi-simultaneous multi-wavelength campaign. This Letter presents the results and analysis of this campaign, as well as the multi-wavelength data as a legacy data repository. We captured M87 in a historically low state, and the core flux dominates over HST-1 at high energies, making it possible to combine core flux constraints with the more spatially precise very long baseline interferometry data. We present the most complete simultaneous multi-wavelength spectrum of the active nucleus to date, and discuss the complexity and caveats of combining data from different spatial scales into one broadband spectrum. We apply two heuristic, isotropic leptonic single-zone models to provide insight into the basic source properties, but conclude that a structured jet is necessary to explain M87's spectrum. We can exclude that the simultaneous γ-ray emission is produced via inverse Compton emission in the same region producing the EHT mm-band emission, and further conclude that the γ-rays can only be produced in the inner jets (inward of HST-1) if there are strongly particle-dominated regions. Direct synchrotron emission from accelerated protons and secondaries cannot yet be excluded. © 2021. The Author(s). Published by the American Astronomical Society..

Published
2021

39. The throughput calibration of the VERITAS telescopes

Author

Nievas Rosillo, Mireia, Adams, C., Falcone, A., Farrell, K. A., Feng, Q., Foote, G. M., Fortson, L., Furniss, A., Gent, A., Gillanders, G. H., Giuri, C., Gueta, O., Archer, A., Hanna, D., Hervet, O., Holder, J., Hona, B., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Kleiner, T. K., Benbow, W., Kumar, S., Lang, M., Lundy, M., Maier, G., McGrath, C. E., Moriarty, P., Mukherjee, R., Nieto, D., O'Brien, S., Ong, R. A., Brill, A., Otte, A., R. Patel, S., Patel, S. R., Pfrang, K., Pohl, M., Prado, R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Buckley, J. H., Ribeiro, D., Roache, E., Ryan, J. A., Sadeh, I., Santander, M., Sembroski, G. H., Shang, R., Tak, D., Vassiliev, V., Weinstein, A., Capasso, M., Williams, D. A., Williamson, T. J., VERITAS Collaboration, Christiansen, J., Chromey, A. J., and Errando, M.

Subjects
detector: performance, 010504 meteorology & atmospheric sciences, air, atmosphere [Cherenkov counter], Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, FOS: Physical sciences, Cherenkov counter: atmosphere, 01 natural sciences, energy: threshold, Cherenkov [radiation], 0103 physical sciences, optical, Calibration, ddc:530, mirror, 010303 astronomy & astrophysics, Throughput (business), Instrumentation and Methods for Astrophysics (astro-ph.IM), Cherenkov radiation, 0105 earth and related environmental sciences, Remote sensing, photomultiplier, showers: atmosphere, performance [detector], imaging [detector], Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Monte Carlo [numerical calculations], detector: imaging, threshold [energy], radiation: Cherenkov, calibration, Crab Nebula, efficiency, Environmental science, VERITAS, numerical calculations: Monte Carlo, Astrophysics - Instrumentation and Methods for Astrophysics, Energy (signal processing), atmosphere [showers]
Abstract

37th International Cosmic Ray Conference, ICRC 2021, Berlin, online, Germany, 12 Jul 2021 - 23 Jul 2021; Proceedings of Science / International School for Advanced Studies (ICRC2021), 721 (2021). doi:10.22323/1.395.0721, Imaging atmospheric Cherenkov telescopes are continuously exposed to varying weather condi- tions that have short and long-term effects on their response to Cherenkov light from extensive air showers. This work presents the implementation of a throughput calibration method for the VERITAS telescopes taking into account changes in the optical response and detector performance over time. Different methods to measure the total throughput of the instrument, which depend on mirror reflectivites and PMT camera gain and efficiency, are discussed as well as the effect of its evolution on energy thresholds, effective collection areas, and energy reconstruction. The application of this calibration in the VERITAS data analysis chain is discussed, including the validation using Monte Carlo simulations and observations of the Crab Nebula., Published by SISSA, Trieste

Published
2021
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40. An Archival Search for Neutron-star Mergers in Gravitational Waves and Very-high-energy Gamma Rays

Author

Adams, C. B., primary, Benbow, W., additional, Brill, A., additional, Buckley, J. H., additional, Capasso, M., additional, Christiansen, J. L., additional, Chromey, A. J., additional, Daniel, M. K., additional, Errando, M., additional, Falcone, A., additional, Farrell, K. A., additional, Feng, Q., additional, Finley, J. P., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Giuri, C., additional, Hanna, D., additional, Hassan, T., additional, Hervet, O., additional, Holder, J., additional, Hughes, G., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, McGrath, C. E, additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, A. N., additional, Park, N., additional, Patel, S., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R. R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Roache, E., additional, Ryan, J. L., additional, Santander, M., additional, Sembroski, G. H., additional, Shang, R., additional, Weinstein, A., additional, Williams, D. A., additional, Williamson, T. J., additional, Bartos, I., additional, Corley, K. R., additional, Márka, S., additional, Márka, Z., additional, and Veske, D., additional

Published
2021
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41. A Search for TeV Gamma-Ray Emission from Pulsar Tails by VERITAS

Author

Benbow, W., primary, Brill, A., additional, Buckley, J. H., additional, Capasso, M., additional, Chromey, A. J., additional, Errando, M., additional, Falcone, A., additional, Farrell, K. A, additional, Feng, Q., additional, Finley, J. P., additional, Foote, G. M., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Giuri, C., additional, Hanna, D., additional, Hassan, T., additional, Hervet, O., additional, Holder, J., additional, Hughes, G., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kargaltsev, Oleg, additional, Kertzman, M., additional, Kieda, D., additional, Klingler, Noel, additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, McGrath, C. E, additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, A. N., additional, Patel, S., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R. R., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Richards, G. T., additional, Roache, E., additional, Ryan, J. L., additional, Santander, M., additional, Sembroski, G. H., additional, Shang, R., additional, Volkov, Igor, additional, Wakely, S. P., additional, Weinstein, A., additional, Wilcox, P., additional, and Williams, D. A., additional

Published
2021
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42. Multi-Messenger observations of the Fermi-LAT blazar 4FGL J0658.6+0636 consistent with an IceCube high-energy neutrino

Author

de Menezes, Raniere, primary, Buson, Sara, additional, Garrappa, Simone, additional, Gokus, Andrea, additional, Kadler, Matthias, additional, Cheung, Teddy, additional, Giroletti, Marcello, additional, Ajello, Marco, additional, Massaro, Francesco, additional, Peña-Herazo, Harold, additional, Schüssler, Fabian, additional, Bernardini, Elisa, additional, Satalecka, Konstancja, additional, Berti, Alessio, additional, Otero-Santos, Jorge, additional, Paggi, Alessandro, additional, Tramacere, Andrea, additional, Ward, Charlotte, additional, Gezari, Suvi, additional, Hämmerich, Steven, additional, Wilms, Joern, additional, Colmar, Werner, additional, Bach, Uwe, additional, Eppel, Florian, additional, Heßdörfer, Jonas, additional, Kraus, Alex, additional, Paraschos, Georgios Filippos, additional, Moldon, Javier, additional, Perez-Torres, Miguel, additional, Agudo, Ivan, additional, Bonnoli, Giacomo, additional, Castro-Tirado, Alberto, additional, Hu, Youdong, additional, CABALLERO-GARCIA, Maria, additional, Fernandez-Garcia, Emilio, additional, Sanchez-Ramirez, Ruben, additional, Coleiro, Alexis, additional, Kouchner, Antoine, additional, Nanci, Cristina, additional, Sheng, Yong, additional, Rajagopal, Meenakshi, additional, Adams, C., additional, Archer, A., additional, Benbow, W., additional, Brill, A., additional, Buckley, J. H., additional, Capasso, M., additional, Christiansen, J., additional, Chromey, A. J., additional, Errando, M., additional, Falcone, A., additional, Farrell, K. A., additional, Feng, Q., additional, Foote, G. M., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Gillanders, G. H., additional, Giuri, C., additional, Gueta, O., additional, Hanna, D., additional, Hervet, O., additional, Holder, J., additional, Hona, B., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, K.~Kleiner, T., additional, Kumar, S., additional, Lang, M., additional, Lundy, M., additional, Maier, G., additional, McGrath, C. E., additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O'Brien, S., additional, Ong, R. A., additional, Otte, A., additional, Patel, S. R., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Roache, E., additional, Ryan, J. A., additional, Sadeh, I., additional, Santander, M., additional, Sembroski, G. H., additional, Shang, R., additional, Tak, D., additional, Vassiliev, V., additional, Weinstein, A., additional, Williams, D. A., additional, Williamson, T. J., additional, Walters, Richard, additional, and J. Masci, Frank, additional

Published
2021
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43. The throughput calibration of the VERITAS telescopes

Author

Nievas Rosillo, Mireia, primary, Adams, C., additional, Archer, A., additional, Benbow, W., additional, Brill, A., additional, Buckley, J. H., additional, Capasso, M., additional, Christiansen, J., additional, Chromey, A. J., additional, Errando, M., additional, Falcone, A., additional, Farrell, K. A., additional, Feng, Q., additional, Foote, G. M., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Gillanders, G. H., additional, Giuri, C., additional, Gueta, O., additional, Hanna, D., additional, Hervet, O., additional, Holder, J., additional, Hona, B., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, Kleiner, T. K., additional, Kumar, S., additional, Lang, M., additional, Lundy, M., additional, Maier, G., additional, McGrath, C. E., additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, O'Brien, S., additional, Ong, R. A., additional, Otte, A., additional, R. Patel, S., additional, Patel, S. R., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Roache, E., additional, Ryan, J. A., additional, Sadeh, I., additional, Santander, M., additional, Sembroski, G. H., additional, Shang, R., additional, Tak, D., additional, Vassiliev, V., additional, Weinstein, A., additional, Williams, D. A., additional, and Williamson, T. J., additional

Published
2021
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44. VERITAS Observations of the Galactic Center Region at Multi-TeV Gamma-Ray Energies

Author

Ryan, James, primary, Archer, A., additional, Benbow, W., additional, Brill, A., additional, Capasso, M., additional, Errando, M., additional, Falcone, A., additional, Feng, Q., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Giuri, C., additional, Gueta, O., additional, Hanna, D., additional, Hervet, O., additional, Holder, J., additional, Hona, B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, Kumar, S., additional, Lundy, M., additional, Maier, G., additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Pfrang, K., additional, Pohl, M., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Ribeiro, D., additional, Roache, E., additional, Sadeh, I., additional, Santander, M., additional, Shang, R., additional, Tak, D., additional, Weinstein, A., additional, Adams, C., additional, Buckley, J. H., additional, Christiansen, J., additional, Chromey, A. J., additional, Farrell, K. A., additional, Foote, G. M., additional, Gillanders, G. H., additional, Humensky, T. B., additional, Kleiner, T. K., additional, Lang, M., additional, McGrath, C. E., additional, Ong, R. A., additional, Otte, A., additional, Patel, S. R., additional, Prado, R., additional, Reynolds, P. T., additional, Ryan, J. A., additional, Sembroski, G. H., additional, Vassiliev, V., additional, Williams, D. A., additional, and Williamson, T. J., additional

Published
2021
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45. Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

Author

Algaba, J. C., Anczarski, J., Asada, K., Baloković, M., Chandra, S., Cui, Y. -Z, Falcone, A. D., Giroletti, M., Goddi, C., Hada, K., Haggard, D., Jorstad, S., Kaur, A., Kawashima, T., Keating, G., Kim, J. -Y, Kino, M., Komossa, S., Kravchenko, E. V., Krichbaum, T. P., Lee, S. -S, Lu, R. -S, Lucchini, M., Markoff, S., Neilsen, J., Nowak, M. A., Park, J., Principe, G., Ramakrishnan, V., Reynolds, M. T., Sasada, M., Savchenko, S. S., Williamson, K. E., Akiyama, K., Alberdi, A., Alef, W., Anantua, R., Azulay, R., Baczko, A. -K, Ball, D., Barrett, J., Bintley, D., Benson, B. A., Blackburn, L., Blundell, R., Boland, W., Bouman, K. L., Bower, G. C., Boyce, H., Bremer, M., Brinkerink, C. D., Brissenden, R., Britzen, S., Broderick, A. E., Broguiere, D., Bronzwaer, T., Byun, D. -Y, Carlstrom, J. E., Chael, A., Chan, C. -K, Chatterjee, S., Chatterjee, K., Chen, M. -T, Chen, Y., Chesler, P. M., Cho, I., Christian, P., Conway, J. E., Cordes, J. M., Crawford, T. M., Crew, G. B., Cruz-Osorio, A., Davelaar, J., De Laurentis, M., Deane, R., Dempsey, J., Desvignes, G., Dexter, J., Doeleman, S. S., Eatough, R. P., Falcke, H., Farah, J., Fish, V. L., Fomalont, E., Ford, H. A., Fraga-Encinas, R., Friberg, P., Fromm, C. M., Fuentes, A., Galison, P., Gammie, C. F., García, R., Gentaz, O., Georgiev, B., Gold, R., Gómez, J. L., Gómez-Ruiz, A. I., Gu, M., Gurwell, M., Hecht, M. H., Hesper, R., Ho, L. C., Ho, P., Honma, M., Huang, C. -WL., Huang, L., Hughes, D. H., Ikeda, S., Inoue, M., Issaoun, S., James, D. J., Jannuzi, B. T., Janssen, M., Jeter, B., Jiang, W., Jiménez-Rosales, A., Johnson, M. D., Jung, T., Karami, M., Karuppusamy, R., Kettenis, M., Kim, D. -J, Kim, J., Koay, J. Y., Kofuji, Y., Koch, P. M., Koyama, S., Kramer, M., Kramer, C., Kuo, C. -Y, Lauer, T. R., Levis, A., Li, Y. -R, Li, Z., Lindqvist, M., Lico, R., Lindahl, G., Liu, J., Liu, K., Liuzzo, E., Lo, W. -P, Lobanov, A. P., Loinard, L., Lonsdale, C., Macdonald, N. R., Mao, J., Marchili, N., Marrone, D. P., Marscher, A. P., Martí-Vidal, I., Matsushita, S., Matthews, L. D., Medeiros, L., Menten, K. M., Mizuno, I., Mizuno, Y., Moran, J. M., Moriyama, K., Moscibrodzka, M., MÃŒller, C., Musoke, G., Mejías, A. M., Nagai, H., Nagar, N. M., Nakamura, M., Narayan, R., Narayanan, G., Natarajan, I., Nathanail, A., Neri, R., Ni, C., Noutsos, A., Okino, H., Olivares, H., Ortiz-León, G. N., Oyama, T., Ozel, F., Palumbo, D. C. M., Patel, N., Pen, U. -L, Pesce, D. W., Piétu, V., Plambeck, R., Popstefanija, A., Porth, O., Pötzl, F. M., Prather, B., Preciado-López, J. A., Psaltis, D., Pu, H. -Y, Rao, R., Rawlings, M. G., Raymond, A. W., Rezzolla, L., Ricarte, A., Ripperda, B., Roelofs, F., Rogers, A., Ros, E., Rose, M., Roshanineshat, A., Rottmann, H., Roy, A. L., Ruszczyk, C., Rygl, K. L. J., Sánchez, S., Sánchez-Arguelles, D., Savolainen, T., Schloerb, F. P., Schuster, K. -F, Shao, L., Shen, Z., Small, D., Sohn, B. W., Soohoo, J., Sun, H., Tazaki, F., Tetarenko, A. J., Tiede, P., Tilanus, R. P. J., Titus, M., Toma, K., Torne, P., Trent, T., Traianou, E., Trippe, S., Van Bemmel, I., Van Langevelde, H. J., Van Rossum, D. R., Wagner, J., Ward-Thompson, D., Wardle, J., Weintroub, J., Wex, N., Wharton, R., Wielgus, M., Wong, G. N., Wu, Q., Yoon, D., Young, A., Young, K., Younsi, Z., Yuan, F., Yuan, Y. -F, Zensus, J. A., Zhao, G. -Y, Zhao, S. -S, D’Ammando, F., Orienti, M., Abdalla, H., Adam, R., Aharonian, F., Benkhali, F. A., AngÃŒner, E. O., Arcaro, C., Armand, C., Armstrong, T., Ashkar, H., Backes, M., Baghmanyan, V., Barbosa Martins, V., Barnacka, A., Barnard, M., Becherini, Yvonne, Berge, D., Bernlöhr, K., Bi, B., Böttcher, M., Boisson, C., Bolmont, J., De Bony De Lavergne, M., Breuhaus, M., Brun, F., Brun, P., Bryan, M., BÃŒchele, M., Bulik, T., Bylund, Tomas, Caroff, S., Carosi, A., Casanova, S., Chand, T., Chen, A., Cotter, G., CuryÅ‚o, M., Damascene Mbarubucyeye, J., Davids, I. D., Davies, J., Deil, C., Devin, J., Dewilt, P., Dirson, L., Djannati-Ataï, A., Dmytriiev, A., Donath, A., Doroshenko, V., Duffy, C., Dyks, J., Egberts, K., Eichhorn, F., Einecke, S., Emery, G., Ernenwein, J. -P, Feijen, K., Fegan, S., Fiasson, A., De Clairfontaine, G. F., Fontaine, G., Funk, S., FÌßling, M., Gabici, S., Gallant, Y. A., Giavitto, G., Giunti, L., Glawion, D., Glicenstein, J. F., Gottschall, D., Grondin, M. -H, Hahn, J., Haupt, M., Hermann, G., Hinton, J. A., Hofmann, W., Hoischen, C., Holch, T. L., Holler, M., Hörbe, M., Horns, D., Huber, D., Jamrozy, M., Jankowsky, D., Jankowsky, F., Jardin-Blicq, A., Joshi, V., Jung-Richardt, I., Kasai, E., Kastendieck, M. A., KatarzyÅ„ski, K., Katz, U., Khangulyan, D., Khélifi, B., Klepser, S., Kluźniak, W., Komin, N., Konno, R., Kosack, K., Kostunin, D., Kreter, M., Lamanna, G., Lemiere, A., Lemoine-Goumard, M., Lenain, J. -P, Levy, C., Lohse, T., Lypova, I., Mackey, J., Majumdar, J., Malyshev, D., Marandon, V., Marchegiani, P., Marcowith, A., Mares, A., Martí-Devesa, G., Marx, R., Maurin, G., Meintjes, P. J., Meyer, M., Moderski, R., Mohamed, M., Mohrmann, L., Montanari, A., Moore, C., Morris, P., Moulin, E., Muller, J., Murach, T., Nakashima, K., Nayerhoda, A., De Naurois, M., Ndiyavala, H., Niederwanger, F., Niemiec, J., Oakes, L., O’Brien, P., Odaka, H., Ohm, S., Olivera-Nieto, L., De Ona Wilhelmi, E., Ostrowski, M., Panter, M., Panny, S., Parsons, R. D., Peron, G., Peyaud, B., Piel, Q., Pita, S., Poireau, V., Noel, A. P., Prokhorov, D. A., Prokoph, H., PÃŒhlhofer, G., Punch, Michael, Quirrenbach, A., Rauth, R., Reichherzer, P., Reimer, A., Reimer, O., Remy, Q., Renaud, M., Rieger, F., Rinchiuso, L., Romoli, C., Rowell, G., Rudak, B., Ruiz-Velasco, E., Sahakian, V., Sailer, S., Sanchez, D. A., Santangelo, A., Sasaki, M., Scalici, M., Schutte, H. M., Schwanke, U., Schwemmer, S., Seglar-Arroyo, M., Senniappan, M., Seyffert, A. S., Shafi, N., Shiningayamwe, K., Simoni, R., Sinha, A., Sol, H., Specovius, A., Spencer, S., Spir-Jacob, M., Stawarz, Ł., Sun, L., Steenkamp, R., Stegmann, C., Steinmassl, S., Steppa, C., Takahashi, T., Tavernier, T., Taylor, A. M., Terrier, R., Tiziani, D., Tluczykont, M., Tomankova, L., Trichard, C., Tsirou, M., Tuffs, R., Uchiyama, Y., Van Der Walt, D. J., Van Eldik, C., Van Rensburg, C., Van Soelen, B., Vasileiadis, G., Veh, J., Venter, C., Vincent, P., Vink, J., Völk, H. J., Vuillaume, T., Wadiasingh, Z., Wagner, S. J., Watson, J., Werner, F., White, R., Wierzcholska, A., Wong, Y. W., Yusafzai, A., Zacharias, M., Zanin, R., Zargaryan, D., Zdziarski, A. A., Zech, A., Zhu, S. J., Zorn, J., Zouari, S., Å»ywucka, N., Acciari, V. A., Ansoldi, S., Antonelli, L. A., Engels, A. A., Artero, M., Asano, K., Baack, D., Babić, A., Baquero, A., De Almeida, U. B., Barrio, J. A., Becerra González, J., Bednarek, W., Bellizzi, L., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., BoÅ¡njak, Åœ., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D’Amico, G., D’Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Delgado Mendez, C., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espineira, E., Dominis Prester, D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Fallah Ramazani, V., Fattorini, A., Ferrara, G., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., García López, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinović, N., Green, J. G., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., HÃŒtten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jiménez, I., Jormanainen, J., Jouvin, L., Kajiwara, Y., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., López-Coto, R., López-Moya, M., López-Oramas, A., Loporchio, S., Machado De Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Menchiari, S., Mender, S., Mićanović, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Neustroev, V., Nigro, C., Nilsson, K., Nishijima, K., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletić, L., Penil, P., Perennes, C., Persic, M., Moroni, P. G. P., Prandini, E., Priyadarshi, C., Puljak, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., Å nidarić, I., Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Surić, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., Van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Wunderlich, C., Zarić, D., Adams, C. B., Benbow, W., Brill, A., Capasso, M., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Errando, M., Farrell, K. A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Giuri, C., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Kumar, S., Lang, M. J., Lundy, M., Maier, G., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O’Brien, S., Ong, R. A., Otte, A. N., Patel, S., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Rulten, C., Ryan, J. L., Santander, M., Sembroski, G. H., Shang, R., Weinstein, A., Williams, D. A., Williamson, T. J., Hirota, T., Cui, L., Niinuma, K., Ro, H., Sakai, N., Sawada-Satoh, S., Wajima, K., Wang, N., Liu, X., Yonekura, Y., Algaba, J. C., Anczarski, J., Asada, K., Baloković, M., Chandra, S., Cui, Y. -Z, Falcone, A. D., Giroletti, M., Goddi, C., Hada, K., Haggard, D., Jorstad, S., Kaur, A., Kawashima, T., Keating, G., Kim, J. -Y, Kino, M., Komossa, S., Kravchenko, E. V., Krichbaum, T. P., Lee, S. -S, Lu, R. -S, Lucchini, M., Markoff, S., Neilsen, J., Nowak, M. A., Park, J., Principe, G., Ramakrishnan, V., Reynolds, M. T., Sasada, M., Savchenko, S. S., Williamson, K. E., Akiyama, K., Alberdi, A., Alef, W., Anantua, R., Azulay, R., Baczko, A. -K, Ball, D., Barrett, J., Bintley, D., Benson, B. A., Blackburn, L., Blundell, R., Boland, W., Bouman, K. L., Bower, G. C., Boyce, H., Bremer, M., Brinkerink, C. D., Brissenden, R., Britzen, S., Broderick, A. E., Broguiere, D., Bronzwaer, T., Byun, D. -Y, Carlstrom, J. E., Chael, A., Chan, C. -K, Chatterjee, S., Chatterjee, K., Chen, M. -T, Chen, Y., Chesler, P. M., Cho, I., Christian, P., Conway, J. E., Cordes, J. M., Crawford, T. M., Crew, G. B., Cruz-Osorio, A., Davelaar, J., De Laurentis, M., Deane, R., Dempsey, J., Desvignes, G., Dexter, J., Doeleman, S. S., Eatough, R. P., Falcke, H., Farah, J., Fish, V. L., Fomalont, E., Ford, H. A., Fraga-Encinas, R., Friberg, P., Fromm, C. M., Fuentes, A., Galison, P., Gammie, C. F., García, R., Gentaz, O., Georgiev, B., Gold, R., Gómez, J. L., Gómez-Ruiz, A. I., Gu, M., Gurwell, M., Hecht, M. H., Hesper, R., Ho, L. C., Ho, P., Honma, M., Huang, C. -WL., Huang, L., Hughes, D. H., Ikeda, S., Inoue, M., Issaoun, S., James, D. J., Jannuzi, B. T., Janssen, M., Jeter, B., Jiang, W., Jiménez-Rosales, A., Johnson, M. D., Jung, T., Karami, M., Karuppusamy, R., Kettenis, M., Kim, D. -J, Kim, J., Koay, J. Y., Kofuji, Y., Koch, P. M., Koyama, S., Kramer, M., Kramer, C., Kuo, C. -Y, Lauer, T. R., Levis, A., Li, Y. -R, Li, Z., Lindqvist, M., Lico, R., Lindahl, G., Liu, J., Liu, K., Liuzzo, E., Lo, W. -P, Lobanov, A. P., Loinard, L., Lonsdale, C., Macdonald, N. R., Mao, J., Marchili, N., Marrone, D. P., Marscher, A. P., Martí-Vidal, I., Matsushita, S., Matthews, L. D., Medeiros, L., Menten, K. M., Mizuno, I., Mizuno, Y., Moran, J. M., Moriyama, K., Moscibrodzka, M., MÃŒller, C., Musoke, G., Mejías, A. M., Nagai, H., Nagar, N. M., Nakamura, M., Narayan, R., Narayanan, G., Natarajan, I., Nathanail, A., Neri, R., Ni, C., Noutsos, A., Okino, H., Olivares, H., Ortiz-León, G. N., Oyama, T., Ozel, F., Palumbo, D. C. M., Patel, N., Pen, U. -L, Pesce, D. W., Piétu, V., Plambeck, R., Popstefanija, A., Porth, O., Pötzl, F. M., Prather, B., Preciado-López, J. A., Psaltis, D., Pu, H. -Y, Rao, R., Rawlings, M. G., Raymond, A. W., Rezzolla, L., Ricarte, A., Ripperda, B., Roelofs, F., Rogers, A., Ros, E., Rose, M., Roshanineshat, A., Rottmann, H., Roy, A. L., Ruszczyk, C., Rygl, K. L. J., Sánchez, S., Sánchez-Arguelles, D., Savolainen, T., Schloerb, F. P., Schuster, K. -F, Shao, L., Shen, Z., Small, D., Sohn, B. W., Soohoo, J., Sun, H., Tazaki, F., Tetarenko, A. J., Tiede, P., Tilanus, R. P. J., Titus, M., Toma, K., Torne, P., Trent, T., Traianou, E., Trippe, S., Van Bemmel, I., Van Langevelde, H. J., Van Rossum, D. R., Wagner, J., Ward-Thompson, D., Wardle, J., Weintroub, J., Wex, N., Wharton, R., Wielgus, M., Wong, G. N., Wu, Q., Yoon, D., Young, A., Young, K., Younsi, Z., Yuan, F., Yuan, Y. -F, Zensus, J. A., Zhao, G. -Y, Zhao, S. -S, D’Ammando, F., Orienti, M., Abdalla, H., Adam, R., Aharonian, F., Benkhali, F. A., AngÃŒner, E. O., Arcaro, C., Armand, C., Armstrong, T., Ashkar, H., Backes, M., Baghmanyan, V., Barbosa Martins, V., Barnacka, A., Barnard, M., Becherini, Yvonne, Berge, D., Bernlöhr, K., Bi, B., Böttcher, M., Boisson, C., Bolmont, J., De Bony De Lavergne, M., Breuhaus, M., Brun, F., Brun, P., Bryan, M., BÃŒchele, M., Bulik, T., Bylund, Tomas, Caroff, S., Carosi, A., Casanova, S., Chand, T., Chen, A., Cotter, G., CuryÅ‚o, M., Damascene Mbarubucyeye, J., Davids, I. D., Davies, J., Deil, C., Devin, J., Dewilt, P., Dirson, L., Djannati-Ataï, A., Dmytriiev, A., Donath, A., Doroshenko, V., Duffy, C., Dyks, J., Egberts, K., Eichhorn, F., Einecke, S., Emery, G., Ernenwein, J. -P, Feijen, K., Fegan, S., Fiasson, A., De Clairfontaine, G. F., Fontaine, G., Funk, S., FÌßling, M., Gabici, S., Gallant, Y. A., Giavitto, G., Giunti, L., Glawion, D., Glicenstein, J. F., Gottschall, D., Grondin, M. -H, Hahn, J., Haupt, M., Hermann, G., Hinton, J. A., Hofmann, W., Hoischen, C., Holch, T. L., Holler, M., Hörbe, M., Horns, D., Huber, D., Jamrozy, M., Jankowsky, D., Jankowsky, F., Jardin-Blicq, A., Joshi, V., Jung-Richardt, I., Kasai, E., Kastendieck, M. A., KatarzyÅ„ski, K., Katz, U., Khangulyan, D., Khélifi, B., Klepser, S., Kluźniak, W., Komin, N., Konno, R., Kosack, K., Kostunin, D., Kreter, M., Lamanna, G., Lemiere, A., Lemoine-Goumard, M., Lenain, J. -P, Levy, C., Lohse, T., Lypova, I., Mackey, J., Majumdar, J., Malyshev, D., Marandon, V., Marchegiani, P., Marcowith, A., Mares, A., Martí-Devesa, G., Marx, R., Maurin, G., Meintjes, P. J., Meyer, M., Moderski, R., Mohamed, M., Mohrmann, L., Montanari, A., Moore, C., Morris, P., Moulin, E., Muller, J., Murach, T., Nakashima, K., Nayerhoda, A., De Naurois, M., Ndiyavala, H., Niederwanger, F., Niemiec, J., Oakes, L., O’Brien, P., Odaka, H., Ohm, S., Olivera-Nieto, L., De Ona Wilhelmi, E., Ostrowski, M., Panter, M., Panny, S., Parsons, R. D., Peron, G., Peyaud, B., Piel, Q., Pita, S., Poireau, V., Noel, A. P., Prokhorov, D. A., Prokoph, H., PÃŒhlhofer, G., Punch, Michael, Quirrenbach, A., Rauth, R., Reichherzer, P., Reimer, A., Reimer, O., Remy, Q., Renaud, M., Rieger, F., Rinchiuso, L., Romoli, C., Rowell, G., Rudak, B., Ruiz-Velasco, E., Sahakian, V., Sailer, S., Sanchez, D. A., Santangelo, A., Sasaki, M., Scalici, M., Schutte, H. M., Schwanke, U., Schwemmer, S., Seglar-Arroyo, M., Senniappan, M., Seyffert, A. S., Shafi, N., Shiningayamwe, K., Simoni, R., Sinha, A., Sol, H., Specovius, A., Spencer, S., Spir-Jacob, M., Stawarz, Ł., Sun, L., Steenkamp, R., Stegmann, C., Steinmassl, S., Steppa, C., Takahashi, T., Tavernier, T., Taylor, A. M., Terrier, R., Tiziani, D., Tluczykont, M., Tomankova, L., Trichard, C., Tsirou, M., Tuffs, R., Uchiyama, Y., Van Der Walt, D. J., Van Eldik, C., Van Rensburg, C., Van Soelen, B., Vasileiadis, G., Veh, J., Venter, C., Vincent, P., Vink, J., Völk, H. J., Vuillaume, T., Wadiasingh, Z., Wagner, S. J., Watson, J., Werner, F., White, R., Wierzcholska, A., Wong, Y. W., Yusafzai, A., Zacharias, M., Zanin, R., Zargaryan, D., Zdziarski, A. A., Zech, A., Zhu, S. J., Zorn, J., Zouari, S., Å»ywucka, N., Acciari, V. A., Ansoldi, S., Antonelli, L. A., Engels, A. A., Artero, M., Asano, K., Baack, D., Babić, A., Baquero, A., De Almeida, U. B., Barrio, J. A., Becerra González, J., Bednarek, W., Bellizzi, L., Bernardini, E., Bernardos, M., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., BoÅ¡njak, Åœ., Busetto, G., Carosi, R., Ceribella, G., Cerruti, M., Chai, Y., Chilingarian, A., Cikota, S., Colak, S. M., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D’Amico, G., D’Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Delgado Mendez, C., Depaoli, D., Di Pierro, F., Di Venere, L., Do Souto Espineira, E., Dominis Prester, D., Donini, A., Dorner, D., Doro, M., Elsaesser, D., Fallah Ramazani, V., Fattorini, A., Ferrara, G., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., García López, R. J., Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Gliwny, P., Godinović, N., Green, J. G., Green, D., Hadasch, D., Hahn, A., Heckmann, L., Herrera, J., Hoang, J., Hrupec, D., HÃŒtten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jiménez, I., Jormanainen, J., Jouvin, L., Kajiwara, Y., Karjalainen, M., Kerszberg, D., Kobayashi, Y., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., López-Coto, R., López-Moya, M., López-Oramas, A., Loporchio, S., Machado De Oliveira Fraga, B., Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Menchiari, S., Mender, S., Mićanović, S., Miceli, D., Miener, T., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Neustroev, V., Nigro, C., Nilsson, K., Nishijima, K., Noda, K., Nozaki, S., Ohtani, Y., Oka, T., Otero-Santos, J., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Pavletić, L., Penil, P., Perennes, C., Persic, M., Moroni, P. G. P., Prandini, E., Priyadarshi, C., Puljak, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Saturni, F. G., Schleicher, B., Schmidt, K., Schweizer, T., Sitarek, J., Å nidarić, I., Sobczynska, D., Spolon, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Surić, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Tosti, L., Truzzi, S., Tutone, A., Ubach, S., Van Scherpenberg, J., Vanzo, G., Vazquez Acosta, M., Ventura, S., Verguilov, V., Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Wunderlich, C., Zarić, D., Adams, C. B., Benbow, W., Brill, A., Capasso, M., Christiansen, J. L., Chromey, A. J., Daniel, M. K., Errando, M., Farrell, K. A., Feng, Q., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Giuri, C., Hassan, T., Hervet, O., Holder, J., Hughes, G., Humensky, T. B., Jin, W., Kaaret, P., Kertzman, M., Kieda, D., Kumar, S., Lang, M. J., Lundy, M., Maier, G., Moriarty, P., Mukherjee, R., Nieto, D., Nievas-Rosillo, M., O’Brien, S., Ong, R. A., Otte, A. N., Patel, S., Pfrang, K., Pohl, M., Prado, R. R., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P. T., Ribeiro, D., Richards, G. T., Roache, E., Rulten, C., Ryan, J. L., Santander, M., Sembroski, G. H., Shang, R., Weinstein, A., Williams, D. A., Williamson, T. J., Hirota, T., Cui, L., Niinuma, K., Ro, H., Sakai, N., Sawada-Satoh, S., Wajima, K., Wang, N., Liu, X., and Yonekura, Y.

Abstract

In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for a weakly accreting supermassive black hole of mass ∌6.5 × 109 M oË™. The EHTC also partnered with several international facilities in space and on the ground, to arrange an extensive, quasi-simultaneous multi-wavelength campaign. This Letter presents the results and analysis of this campaign, as well as the multi-wavelength data as a legacy data repository. We captured M87 in a historically low state, and the core flux dominates over HST-1 at high energies, making it possible to combine core flux constraints with the more spatially precise very long baseline interferometry data. We present the most complete simultaneous multi-wavelength spectrum of the active nucleus to date, and discuss the complexity and caveats of combining data from different spatial scales into one broadband spectrum. We apply two heuristic, isotropic leptonic single-zone models to provide insight into the basic source properties, but conclude that a structured jet is necessary to explain M87’s spectrum. We can exclude that the simultaneous γ-ray emission is produced via inverse Compton emission in the same region producing the EHT mm-band emission, and further conclude that the γ-rays can only be produced in the inner jets (inward of HST-1) if there are strongly particle-dominated regions. Direct synchrotron emission from accelerated protons and secondaries cannot yet be excluded. © 2021. The Author(s). Published by the American Astronomical Society..

Published
2021
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46. Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Author

Abdalla, H., Abe, H., Acero, F., Acharyya, A., Adam, R., Agudo, I, Aguirre-Santaella, A., Alfaro, R., Alfaro, J., Alispach, C., Aloisio, R., Batista, R. Alves, Amati, L., Amato, E., Ambrosi, G., Anguner, E. O., Araudo, A., Armstrong, T., Arqueros, F., Arrabito, L., Asano, K., Ascasibar, Y., Ashley, M., Backes, M., Balazs, C., Balbo, M., Balmaverde, B., Baquero Larriva, A., Martins, V. Barbosa, Barkov, M., Baroncelli, L., de Almeida, U. Barres, Barrio, J. A., Batista, P-, I, Becerra Gonzalez, J., Becherini, Yvonne, Beck, G., Tjus, J. Becker, Belmont, R., Benbow, W., Bernardini, E., Berti, A., Berton, M., Bertucci, B., Beshley, V, Bi, B., Biasuzzi, B., Biland, A., Bissaldi, E., Biteau, J., Blanch, O., Bocchino, F., Boisson, C., Bolmont, J., Bonanno, G., Arbeletche, L. Bonneau, Bonnoli, G., Bordas, P., Bottacini, E., Bottcher, M., Bozhilov, V, Bregeon, J., Brill, A., Brown, A. M., Bruno, P., Bruno, A., Bulgarelli, A., Burton, M., Buscemi, M., Caccianiga, A., Cameron, R., Capasso, M., Caprai, M., Caproni, A., Capuzzo-Dolcetta, R., Caraveo, P., Carosi, R., Carosi, A., Casanova, S., Cascone, E., Cauz, D., Cerny, K., Cerruti, M., Chadwick, P., Chaty, S., Chen, A., Chernyakova, M., Chiaro, G., Chiavassa, A., Chytka, L., Conforti, V, Conte, F., Contreras, J. L., Coronado-Blazquez, J., Cortina, J., Costa, A., Costantini, H., Covino, S., Cristofari, P., Cuevas, O., D'Ammando, F., Daniel, M. K., Davies, J., Dazzi, F., De Angelis, A., de Lavergne, M. de Bony, De Caprio, V, dos Anjos, R. de Cassia, Dal Pino, E. M. de Gouveia, De Lotto, B., De Martino, D., de Naurois, M., Wilhelmi, E. de Ona, De Palma, F., de Souza, V, Delgado, C., Della Ceca, R., della Volpe, D., Depaoli, D., Di Girolamo, T., Di Pierro, F., Diaz, C., Diaz-Bahamondes, C., Diebold, S., Djannati-Atai, A., Dmytriiev, A., Dominguez, A., Donini, A., Dorner, D., Doro, M., Dournaux, J., Dwarkadas, V. V., Ebr, J., Eckner, C., Einecke, S., Ekoume, T. R. N., Elsaesser, D., Emery, G., Evoli, C., Fairbairn, M., Falceta-Goncalves, D., Fegan, S., Feng, Q., Ferrand, G., Fiandrini, E., Fiasson, A., Fioretti, V, Foffano, L., Fonseca, M. , V, Font, L., Fontaine, G., Franco, F. J., Freixas Coromina, L., Fukami, S., Fukazawa, Y., Fukui, Y., Gaggero, D., Galanti, G., Gammaldi, V, Garcia, E., Garczarczyk, M., Gascon, D., Gaug, M., Gent, A., Ghalumyan, A., Ghirlanda, G., Gianotti, F., Giarrusso, M., Giavitto, G., Giglietto, N., Giordano, F., Glicenstein, J., Goldoni, P., Gonzalez, J. M., Gourgouliatos, K., Grabarczyk, T., Grandi, P., Granot, J., Grasso, D., Green, J., Grube, J., Gueta, O., Gunji, S., Halim, A., Harvey, M., Collado, T. Hassan, Hayashi, K., Heller, M., Cadena, S. Hernandez, Hervet, O., Hinton, J., Hiroshima, N., Hnatyk, B., Hnatyk, R., Hoffmann, D., Hofmann, W., Holder, J., Horan, D., Horandel, J., Horvath, P., Hovatta, T., Hrabovsky, M., Hrupec, D., Hughes, G., Hutten, M., Iarlori, M., Inada, T., Inoue, S., Insolia, A., Ionica, M., Iori, M., Jacquemont, M., Jamrozy, M., Janecek, P., Jimenez Martinez, I, Jin, W., Jung-Richardt, I, Jurysek, J., Kaaret, P., Karas, V, Karkar, S., Kawanaka, N., Kerszberg, D., Khelifi, B., Kissmann, R., Knodlseder, J., Kobayashi, Y., Kohri, K., Komin, N., Kong, A., Kosack, K., Kubo, H., La Palombara, N., Lamanna, G., Lang, R. G., Lapington, J., Laporte, P., Lefaucheur, J., Lemoine-Goumard, M., Lenain, J., Leone, F., Leto, G., Leuschner, F., Lindfors, E., Lloyd, S., Lohse, T., Lombardi, S., Longo, F., Lopez, A., Lopez, M., Lopez-Coto, R., Loporchio, S., Lucarelli, F., Luque-Escamilla, P. L., Lyard, E., Maggio, C., Majczyna, A., Makariev, M., Mallamaci, M., Mandat, D., Maneva, G., Manganaro, M., Manico, G., Marcowith, A., Marculewicz, M., Markoff, S., Marquez, P., Marti, J., Martinez, O., Martinez, M., Martinez, G., Martinez-Huerta, H., Maurin, G., Mazin, D., Mbarubucyeye, J. D., Miranda, D. Medina, Meyer, M., Micanovic, S., Miener, T., Minev, M., Miranda, J. M., Mitchell, A., Mizuno, T., Mode, B., Moderski, R., Mohrmann, L., Molina, E., Montaruli, T., Moralejo, A., Morales Merino, J., Morcuende-Parrilla, D., Morselli, A., Mukherjee, R., Mundell, C., Murach, T., Muraishi, H., Nagai, A., Nakamori, T., Nemmen, R., Niemiec, J., Nieto, D., Nievas, M., Nikolajuk, M., Nishijima, K., Noda, K., Nosek, D., Nozaki, S., Ohira, Y., Ohishi, M., Oka, T., Ong, R. A., Orienti, M., Orito, R., Orlandini, M., Orlando, E., Osborne, J. P., Ostrowski, M., Oya, I, Pagliaro, A., Palatka, M., Paneque, D., Pantaleo, F. R., Paredes, J. M., Parmiggiani, N., Patricelli, B., Pavletic, L., Pe'er, A., Pech, M., Pecimotika, M., Peresano, M., Persic, M., Petruk, O., Pfrang, K., Piatteli, P., Pietropaolo, E., Pillera, R., Pilszyk, B., Pimentel, D., Pintore, F., Pita, S., Pohl, M., Poireau, V, Polo, M., Prado, R. R., Prast, J., Principe, G., Produit, N., Prokoph, H., Prouza, M., Przybilski, H., Pueschel, E., Puehlhofer, G., Pumo, M. L., Punch, Michael, Queiroz, F., Quirrenbach, A., Rando, R., Razzaque, S., Rebert, E., Recchia, S., Reichherzer, P., Reimer, O., Reimer, A., Renier, Y., Reposeur, T., Rhode, W., Ribeiro, D., Ribo, M., Richtler, T., Rico, J., Rieger, F., Rizi, V, Rodriguez, J., Fernandez, G. Rodriguez, Ramirez, J. C. Rodriguez, Rodriguez Vazquez, J. J., Romano, P., Romeo, G., Roncadelli, M., Rosado, J., de Leon, A. Rosales, Rowell, G., Rudak, B., Rujopakarn, W., Russo, F., Sadeh, I, Saha, L., Saito, T., Greus, F. Salesa, Sanchez, D., Sanchez-Conde, M., Sangiorgi, P., Sano, H., Santander, M., Santos, E. M., Sanuy, A., Sarkar, S., Saturni, F. G., Sawangwit, U., Scherer, A., Schleicher, B., Schovanek, P., Schussler, F., Schwanke, U., Sciacca, E., Scuderi, S., Arroyo, M. Seglar, Sergijenko, O., Servillat, M., Seweryn, K., Shalchi, A., Sharma, P., Shellard, R. C., Siejkowski, H., Sinha, A., Sliusar, V, Slowikowska, A., Sokolenko, A., Sol, H., Specovius, A., Spencer, S., Spiga, D., Stamerra, A., Starling, R., Stolarczyk, T., Straumann, U., Striskovic, J., Suda, Y., Tagliaferri, G., Takahashi, H., Takahashi, M., Tavecchio, F., Taylor, L., Tejedor, L. A., Temnikov, P., Terrier, R., Terzic, T., Testa, V, Tian, W., Tibaldo, L., Tonev, D., Torres, D. F., Torresi, E., Tosti, L., Tothill, N., Tovmassian, G., Travnicek, P., Truzzi, S., Tuossenel, F., Umana, G., Vacula, M., Vagelli, V., Valentino, M., Vallage, B., Vallania, P., van Eldik, C., Varner, G. S., Vassiliev, V., Vazquez Acosta, M., Vecchi, M., Veh, J., Vercellone, S., Vergani, S., Verguilov, V., Vettolani, G. P., Viana, A., Vigorito, C. F., Vitale, V., Vorobiov, S., Vovk, I, Vuillaume, T., Wagner, S. J., Walter, R., Watson, J., White, M., White, R., Wiemann, R., Wierzcholska, A., Will, M., Williams, D. A., Wischnewski, R., Wolter, A., Yamazaki, R., Yanagita, S., Yang, L., Yoshikoshi, T., Zacharias, M., Zaharijas, G., Zaric, D., Zavrtanik, M., Zavrtanik, D., Zdziarski, A. A., Zech, A., Zechlin, H., Zhdanov, V. , I, Zivec, M., Abdalla, H., Abe, H., Acero, F., Acharyya, A., Adam, R., Agudo, I, Aguirre-Santaella, A., Alfaro, R., Alfaro, J., Alispach, C., Aloisio, R., Batista, R. Alves, Amati, L., Amato, E., Ambrosi, G., Anguner, E. O., Araudo, A., Armstrong, T., Arqueros, F., Arrabito, L., Asano, K., Ascasibar, Y., Ashley, M., Backes, M., Balazs, C., Balbo, M., Balmaverde, B., Baquero Larriva, A., Martins, V. Barbosa, Barkov, M., Baroncelli, L., de Almeida, U. Barres, Barrio, J. A., Batista, P-, I, Becerra Gonzalez, J., Becherini, Yvonne, Beck, G., Tjus, J. Becker, Belmont, R., Benbow, W., Bernardini, E., Berti, A., Berton, M., Bertucci, B., Beshley, V, Bi, B., Biasuzzi, B., Biland, A., Bissaldi, E., Biteau, J., Blanch, O., Bocchino, F., Boisson, C., Bolmont, J., Bonanno, G., Arbeletche, L. Bonneau, Bonnoli, G., Bordas, P., Bottacini, E., Bottcher, M., Bozhilov, V, Bregeon, J., Brill, A., Brown, A. M., Bruno, P., Bruno, A., Bulgarelli, A., Burton, M., Buscemi, M., Caccianiga, A., Cameron, R., Capasso, M., Caprai, M., Caproni, A., Capuzzo-Dolcetta, R., Caraveo, P., Carosi, R., Carosi, A., Casanova, S., Cascone, E., Cauz, D., Cerny, K., Cerruti, M., Chadwick, P., Chaty, S., Chen, A., Chernyakova, M., Chiaro, G., Chiavassa, A., Chytka, L., Conforti, V, Conte, F., Contreras, J. L., Coronado-Blazquez, J., Cortina, J., Costa, A., Costantini, H., Covino, S., Cristofari, P., Cuevas, O., D'Ammando, F., Daniel, M. K., Davies, J., Dazzi, F., De Angelis, A., de Lavergne, M. de Bony, De Caprio, V, dos Anjos, R. de Cassia, Dal Pino, E. M. de Gouveia, De Lotto, B., De Martino, D., de Naurois, M., Wilhelmi, E. de Ona, De Palma, F., de Souza, V, Delgado, C., Della Ceca, R., della Volpe, D., Depaoli, D., Di Girolamo, T., Di Pierro, F., Diaz, C., Diaz-Bahamondes, C., Diebold, S., Djannati-Atai, A., Dmytriiev, A., Dominguez, A., Donini, A., Dorner, D., Doro, M., Dournaux, J., Dwarkadas, V. V., Ebr, J., Eckner, C., Einecke, S., Ekoume, T. R. N., Elsaesser, D., Emery, G., Evoli, C., Fairbairn, M., Falceta-Goncalves, D., Fegan, S., Feng, Q., Ferrand, G., Fiandrini, E., Fiasson, A., Fioretti, V, Foffano, L., Fonseca, M. , V, Font, L., Fontaine, G., Franco, F. J., Freixas Coromina, L., Fukami, S., Fukazawa, Y., Fukui, Y., Gaggero, D., Galanti, G., Gammaldi, V, Garcia, E., Garczarczyk, M., Gascon, D., Gaug, M., Gent, A., Ghalumyan, A., Ghirlanda, G., Gianotti, F., Giarrusso, M., Giavitto, G., Giglietto, N., Giordano, F., Glicenstein, J., Goldoni, P., Gonzalez, J. M., Gourgouliatos, K., Grabarczyk, T., Grandi, P., Granot, J., Grasso, D., Green, J., Grube, J., Gueta, O., Gunji, S., Halim, A., Harvey, M., Collado, T. Hassan, Hayashi, K., Heller, M., Cadena, S. Hernandez, Hervet, O., Hinton, J., Hiroshima, N., Hnatyk, B., Hnatyk, R., Hoffmann, D., Hofmann, W., Holder, J., Horan, D., Horandel, J., Horvath, P., Hovatta, T., Hrabovsky, M., Hrupec, D., Hughes, G., Hutten, M., Iarlori, M., Inada, T., Inoue, S., Insolia, A., Ionica, M., Iori, M., Jacquemont, M., Jamrozy, M., Janecek, P., Jimenez Martinez, I, Jin, W., Jung-Richardt, I, Jurysek, J., Kaaret, P., Karas, V, Karkar, S., Kawanaka, N., Kerszberg, D., Khelifi, B., Kissmann, R., Knodlseder, J., Kobayashi, Y., Kohri, K., Komin, N., Kong, A., Kosack, K., Kubo, H., La Palombara, N., Lamanna, G., Lang, R. G., Lapington, J., Laporte, P., Lefaucheur, J., Lemoine-Goumard, M., Lenain, J., Leone, F., Leto, G., Leuschner, F., Lindfors, E., Lloyd, S., Lohse, T., Lombardi, S., Longo, F., Lopez, A., Lopez, M., Lopez-Coto, R., Loporchio, S., Lucarelli, F., Luque-Escamilla, P. L., Lyard, E., Maggio, C., Majczyna, A., Makariev, M., Mallamaci, M., Mandat, D., Maneva, G., Manganaro, M., Manico, G., Marcowith, A., Marculewicz, M., Markoff, S., Marquez, P., Marti, J., Martinez, O., Martinez, M., Martinez, G., Martinez-Huerta, H., Maurin, G., Mazin, D., Mbarubucyeye, J. D., Miranda, D. Medina, Meyer, M., Micanovic, S., Miener, T., Minev, M., Miranda, J. M., Mitchell, A., Mizuno, T., Mode, B., Moderski, R., Mohrmann, L., Molina, E., Montaruli, T., Moralejo, A., Morales Merino, J., Morcuende-Parrilla, D., Morselli, A., Mukherjee, R., Mundell, C., Murach, T., Muraishi, H., Nagai, A., Nakamori, T., Nemmen, R., Niemiec, J., Nieto, D., Nievas, M., Nikolajuk, M., Nishijima, K., Noda, K., Nosek, D., Nozaki, S., Ohira, Y., Ohishi, M., Oka, T., Ong, R. A., Orienti, M., Orito, R., Orlandini, M., Orlando, E., Osborne, J. P., Ostrowski, M., Oya, I, Pagliaro, A., Palatka, M., Paneque, D., Pantaleo, F. R., Paredes, J. M., Parmiggiani, N., Patricelli, B., Pavletic, L., Pe'er, A., Pech, M., Pecimotika, M., Peresano, M., Persic, M., Petruk, O., Pfrang, K., Piatteli, P., Pietropaolo, E., Pillera, R., Pilszyk, B., Pimentel, D., Pintore, F., Pita, S., Pohl, M., Poireau, V, Polo, M., Prado, R. R., Prast, J., Principe, G., Produit, N., Prokoph, H., Prouza, M., Przybilski, H., Pueschel, E., Puehlhofer, G., Pumo, M. L., Punch, Michael, Queiroz, F., Quirrenbach, A., Rando, R., Razzaque, S., Rebert, E., Recchia, S., Reichherzer, P., Reimer, O., Reimer, A., Renier, Y., Reposeur, T., Rhode, W., Ribeiro, D., Ribo, M., Richtler, T., Rico, J., Rieger, F., Rizi, V, Rodriguez, J., Fernandez, G. Rodriguez, Ramirez, J. C. Rodriguez, Rodriguez Vazquez, J. J., Romano, P., Romeo, G., Roncadelli, M., Rosado, J., de Leon, A. Rosales, Rowell, G., Rudak, B., Rujopakarn, W., Russo, F., Sadeh, I, Saha, L., Saito, T., Greus, F. Salesa, Sanchez, D., Sanchez-Conde, M., Sangiorgi, P., Sano, H., Santander, M., Santos, E. M., Sanuy, A., Sarkar, S., Saturni, F. G., Sawangwit, U., Scherer, A., Schleicher, B., Schovanek, P., Schussler, F., Schwanke, U., Sciacca, E., Scuderi, S., Arroyo, M. Seglar, Sergijenko, O., Servillat, M., Seweryn, K., Shalchi, A., Sharma, P., Shellard, R. C., Siejkowski, H., Sinha, A., Sliusar, V, Slowikowska, A., Sokolenko, A., Sol, H., Specovius, A., Spencer, S., Spiga, D., Stamerra, A., Starling, R., Stolarczyk, T., Straumann, U., Striskovic, J., Suda, Y., Tagliaferri, G., Takahashi, H., Takahashi, M., Tavecchio, F., Taylor, L., Tejedor, L. A., Temnikov, P., Terrier, R., Terzic, T., Testa, V, Tian, W., Tibaldo, L., Tonev, D., Torres, D. F., Torresi, E., Tosti, L., Tothill, N., Tovmassian, G., Travnicek, P., Truzzi, S., Tuossenel, F., Umana, G., Vacula, M., Vagelli, V., Valentino, M., Vallage, B., Vallania, P., van Eldik, C., Varner, G. S., Vassiliev, V., Vazquez Acosta, M., Vecchi, M., Veh, J., Vercellone, S., Vergani, S., Verguilov, V., Vettolani, G. P., Viana, A., Vigorito, C. F., Vitale, V., Vorobiov, S., Vovk, I, Vuillaume, T., Wagner, S. J., Walter, R., Watson, J., White, M., White, R., Wiemann, R., Wierzcholska, A., Will, M., Williams, D. A., Wischnewski, R., Wolter, A., Yamazaki, R., Yanagita, S., Yang, L., Yoshikoshi, T., Zacharias, M., Zaharijas, G., Zaric, D., Zavrtanik, M., Zavrtanik, D., Zdziarski, A. A., Zech, A., Zechlin, H., Zhdanov, V. , I, and Zivec, M.

Abstract

The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for gamma-ray astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental physics. We study some of the salient areas of gamma-ray cosmology that can be explored as part of the Key Science Projects of CTA, through simulated observations of active galactic nuclei (AGN) and of their relativistic jets. Observations of AGN with CTA will enable a measurement of gamma-ray absorption on the extragalactic background light with a statistical uncertainty below 15% up to a redshift z = 2 and to constrain or detect gamma-ray halos up to intergalactic-magnetic-field strengths of at least 0.3 pG. Extragalactic observations with CTA also show promising potential to probe physics beyond the Standard Model. The best limits on Lorentz invariance violation from gamma-ray astronomy will be improved by a factor of at least two to three. CTA will also probe the parameter space in which axion-like particles could constitute a significant fraction, if not all, of dark matter. We conclude on the synergies between CTA and other upcoming facilities that will foster the growth of gamma-ray cosmology.

Published
2021
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47. VERITAS Observations of the Galactic Center Region at Multi-TeV Gamma-Ray Energies

Author

Adams, C. B., primary, Benbow, W., additional, Brill, A., additional, Brose, R., additional, Buchovecky, M., additional, Capasso, M., additional, Christiansen, J. L., additional, Chromey, A. J., additional, Daniel, M. K., additional, Errando, M., additional, Falcone, A., additional, Feng, Q., additional, Finley, J. P., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Gillanders, G. H., additional, Giuri, C., additional, Hanna, D., additional, Hervet, O., additional, Holder, J., additional, Hughes, G., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kelley-Hoskins, N., additional, Kertzman, M., additional, Kieda, D., additional, Krennrich, F., additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, A. N., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R. R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Richards, G. T., additional, Roache, E., additional, Ryan, J. L., additional, Santander, M., additional, Schlenstedt, S., additional, Sembroski, G. H., additional, Shang, R., additional, Stevenson, B., additional, Wakely, S. P., additional, Weinstein, A., additional, and Williams, D. A., additional

Published
2021
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48. Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

Author

Algaba, J. C., additional, Anczarski, J., additional, Asada, K., additional, Baloković, M., additional, Chandra, S., additional, Cui, Y.-Z., additional, Falcone, A. D., additional, Giroletti, M., additional, Goddi, C., additional, Hada, K., additional, Haggard, D., additional, Jorstad, S., additional, Kaur, A., additional, Kawashima, T., additional, Keating, G., additional, Kim, J.-Y., additional, Kino, M., additional, Komossa, S., additional, Kravchenko, E. V., additional, Krichbaum, T. P., additional, Lee, S.-S., additional, Lu, R.-S., additional, Lucchini, M., additional, Markoff, S., additional, Neilsen, J., additional, Nowak, M. A., additional, Park, J., additional, Principe, G., additional, Ramakrishnan, V., additional, Reynolds, M. T., additional, Sasada, M., additional, Savchenko, S. S., additional, Williamson, K. E., additional, Akiyama, Kazunori, additional, Alberdi, Antxon, additional, Alef, Walter, additional, Anantua, Richard, additional, Azulay, Rebecca, additional, Baczko, Anne-Kathrin, additional, Ball, David, additional, Barrett, John, additional, Bintley, Dan, additional, Benson, Bradford A., additional, Blackburn, Lindy, additional, Blundell, Raymond, additional, Boland, Wilfred, additional, Bouman, Katherine L., additional, Bower, Geoffrey C., additional, Boyce, Hope, additional, Bremer, Michael, additional, Brinkerink, Christiaan D., additional, Brissenden, Roger, additional, Britzen, Silke, additional, Broderick, Avery E., additional, Broguiere, Dominique, additional, Bronzwaer, Thomas, additional, Byun, Do-Young, additional, Carlstrom, John E., additional, Chael, Andrew, additional, Chan, Chi-kwan, additional, Chatterjee, Shami, additional, Chatterjee, Koushik, additional, Chen, Ming-Tang, additional, Chen, Yongjun, additional, Chesler, Paul M., additional, Cho, Ilje, additional, Christian, Pierre, additional, Conway, John E., additional, Cordes, James M., additional, Crawford, Thomas M., additional, Crew, Geoffrey B., additional, Cruz-Osorio, Alejandro, additional, Davelaar, Jordy, additional, De Laurentis, Mariafelicia, additional, Deane, Roger, additional, Dempsey, Jessica, additional, Desvignes, Gregory, additional, Dexter, Jason, additional, Doeleman, Sheperd S., additional, Eatough, Ralph P., additional, Falcke, Heino, additional, Farah, Joseph, additional, Fish, Vincent L., additional, Fomalont, Ed, additional, Ford, H. Alyson, additional, Fraga-Encinas, Raquel, additional, Friberg, Per, additional, Fromm, Christian M., additional, Fuentes, Antonio, additional, Galison, Peter, additional, Gammie, Charles F., additional, García, Roberto, additional, Gentaz, Olivier, additional, Georgiev, Boris, additional, Gold, Roman, additional, Gómez, José L., additional, Gómez-Ruiz, Arturo I., additional, Gu, Minfeng, additional, Gurwell, Mark, additional, Hecht, Michael H., additional, Hesper, Ronald, additional, Ho, Luis C., additional, Ho, Paul, additional, Honma, Mareki, additional, Huang, Chih-Wei L., additional, Huang, Lei, additional, Hughes, David H., additional, Ikeda, Shiro, additional, Inoue, Makoto, additional, Issaoun, Sara, additional, James, David J., additional, Jannuzi, Buell T., additional, Janssen, Michael, additional, Jeter, Britton, additional, Jiang, Wu, additional, Jiménez-Rosales, Alejandra, additional, Johnson, Michael D., additional, Jung, Taehyun, additional, Karami, Mansour, additional, Karuppusamy, Ramesh, additional, Kettenis, Mark, additional, Kim, Dong-Jin, additional, Kim, Jongsoo, additional, Kim, Junhan, additional, Koay, Jun Yi, additional, Kofuji, Yutaro, additional, Koch, Patrick M., additional, Koyama, Shoko, additional, Kramer, Michael, additional, Kramer, Carsten, additional, Kuo, Cheng-Yu, additional, Lauer, Tod R., additional, Levis, Aviad, additional, Li, Yan-Rong, additional, Li, Zhiyuan, additional, Lindqvist, Michael, additional, Lico, Rocco, additional, Lindahl, Greg, additional, Liu, Jun, additional, Liu, Kuo, additional, Liuzzo, Elisabetta, additional, Lo, Wen-Ping, additional, Lobanov, Andrei P., additional, Loinard, Laurent, additional, Lonsdale, Colin, additional, MacDonald, Nicholas R., additional, Mao, Jirong, additional, Marchili, Nicola, additional, Marrone, Daniel P., additional, Marscher, Alan P., additional, Martí-Vidal, Iván, additional, Matsushita, Satoki, additional, Matthews, Lynn D., additional, Medeiros, Lia, additional, Menten, Karl M., additional, Mizuno, Izumi, additional, Mizuno, Yosuke, additional, Moran, James M., additional, Moriyama, Kotaro, additional, Moscibrodzka, Monika, additional, Müller, Cornelia, additional, Musoke, Gibwa, additional, Mejías, Alejandro Mus, additional, Nagai, Hiroshi, additional, Nagar, Neil M., additional, Nakamura, Masanori, additional, Narayan, Ramesh, additional, Narayanan, Gopal, additional, Natarajan, Iniyan, additional, Nathanail, Antonios, additional, Neri, Roberto, additional, Ni, Chunchong, additional, Noutsos, Aristeidis, additional, Okino, Hiroki, additional, Olivares, Héctor, additional, Ortiz-León, Gisela N., additional, Oyama, Tomoaki, additional, Özel, Feryal, additional, Palumbo, Daniel C. M., additional, Patel, Nimesh, additional, Pen, Ue-Li, additional, Pesce, Dominic W., additional, Piétu, Vincent, additional, Plambeck, Richard, additional, PopStefanija, Aleksandar, additional, Porth, Oliver, additional, Pötzl, Felix M., additional, Prather, Ben, additional, Preciado-López, Jorge A., additional, Psaltis, Dimitrios, additional, Pu, Hung-Yi, additional, Rao, Ramprasad, additional, Rawlings, Mark G., additional, Raymond, Alexander W., additional, Rezzolla, Luciano, additional, Ricarte, Angelo, additional, Ripperda, Bart, additional, Roelofs, Freek, additional, Rogers, Alan, additional, Ros, Eduardo, additional, Rose, Mel, additional, Roshanineshat, Arash, additional, Rottmann, Helge, additional, Roy, Alan L., additional, Ruszczyk, Chet, additional, Rygl, Kazi L. J., additional, Sánchez, Salvador, additional, Sánchez-Arguelles, David, additional, Savolainen, Tuomas, additional, Schloerb, F. Peter, additional, Schuster, Karl-Friedrich, additional, Shao, Lijing, additional, Shen, Zhiqiang, additional, Small, Des, additional, Sohn, Bong Won, additional, SooHoo, Jason, additional, Sun, He, additional, Tazaki, Fumie, additional, Tetarenko, Alexandra J., additional, Tiede, Paul, additional, Tilanus, Remo P. J., additional, Titus, Michael, additional, Toma, Kenji, additional, Torne, Pablo, additional, Trent, Tyler, additional, Traianou, Efthalia, additional, Trippe, Sascha, additional, van Bemmel, Ilse, additional, van Langevelde, Huib Jan, additional, van Rossum, Daniel R., additional, Wagner, Jan, additional, Ward-Thompson, Derek, additional, Wardle, John, additional, Weintroub, Jonathan, additional, Wex, Norbert, additional, Wharton, Robert, additional, Wielgus, Maciek, additional, Wong, George N., additional, Wu, Qingwen, additional, Yoon, Doosoo, additional, Young, André, additional, Young, Ken, additional, Younsi, Ziri, additional, Yuan, Feng, additional, Yuan, Ye-Fei, additional, Zensus, J. Anton, additional, Zhao, Guang-Yao, additional, Zhao, Shan-Shan, additional, D’Ammando, F., additional, Orienti, M., additional, Abdalla, H., additional, Adam, R., additional, Aharonian, F., additional, Benkhali, F. Ait, additional, Angüner, E. O., additional, Arcaro, C., additional, Armand, C., additional, Armstrong, T., additional, Ashkar, H., additional, Backes, M., additional, Baghmanyan, V., additional, Barbosa Martins, V., additional, Barnacka, A., additional, Barnard, M., additional, Becherini, Y., additional, Berge, D., additional, Bernlöhr, K., additional, Bi, B., additional, Böttcher, M., additional, Boisson, C., additional, Bolmont, J., additional, de Bony de Lavergne, M., additional, Breuhaus, M., additional, Brun, F., additional, Brun, P., additional, Bryan, M., additional, Büchele, M., additional, Bulik, T., additional, Bylund, T., additional, Caroff, S., additional, Carosi, A., additional, Casanova, S., additional, Chand, T., additional, Chen, A., additional, Cotter, G., additional, Curyło, M., additional, Damascene Mbarubucyeye, J., additional, Davids, I. D., additional, Davies, J., additional, Deil, C., additional, Devin, J., additional, deWilt, P., additional, Dirson, L., additional, Djannati-Ataï, A., additional, Dmytriiev, A., additional, Donath, A., additional, Doroshenko, V., additional, Duffy, C., additional, Dyks, J., additional, Egberts, K., additional, Eichhorn, F., additional, Einecke, S., additional, Emery, G., additional, Ernenwein, J.-P., additional, Feijen, K., additional, Fegan, S., additional, Fiasson, A., additional, de Clairfontaine, G. Fichet, additional, Fontaine, G., additional, Funk, S., additional, Füßling, M., additional, Gabici, S., additional, Gallant, Y. A., additional, Giavitto, G., additional, Giunti, L., additional, Glawion, D., additional, Glicenstein, J. F., additional, Gottschall, D., additional, Grondin, M.-H., additional, Hahn, J., additional, Haupt, M., additional, Hermann, G., additional, Hinton, J. A., additional, Hofmann, W., additional, Hoischen, C., additional, Holch, T. L., additional, Holler, M., additional, Hörbe, M., additional, Horns, D., additional, Huber, D., additional, Jamrozy, M., additional, Jankowsky, D., additional, Jankowsky, F., additional, Jardin-Blicq, A., additional, Joshi, V., additional, Jung-Richardt, I., additional, Kasai, E., additional, Kastendieck, M. A., additional, Katarzyński, K., additional, Katz, U., additional, Khangulyan, D., additional, Khélifi, B., additional, Klepser, S., additional, Kluźniak, W., additional, Komin, Nu., additional, Konno, R., additional, Kosack, K., additional, Kostunin, D., additional, Kreter, M., additional, Lamanna, G., additional, Lemière, A., additional, Lemoine-Goumard, M., additional, Lenain, J.-P., additional, Levy, C., additional, Lohse, T., additional, Lypova, I., additional, Mackey, J., additional, Majumdar, J., additional, Malyshev, D., additional, Marandon, V., additional, Marchegiani, P., additional, Marcowith, A., additional, Mares, A., additional, Martí-Devesa, G., additional, Marx, R., additional, Maurin, G., additional, Meintjes, P. J., additional, Meyer, M., additional, Moderski, R., additional, Mohamed, M., additional, Mohrmann, L., additional, Montanari, A., additional, Moore, C., additional, Morris, P., additional, Moulin, E., additional, Muller, J., additional, Murach, T., additional, Nakashima, K., additional, Nayerhoda, A., additional, de Naurois, M., additional, Ndiyavala, H., additional, Niederwanger, F., additional, Niemiec, J., additional, Oakes, L., additional, O’Brien, P., additional, Odaka, H., additional, Ohm, S., additional, Olivera-Nieto, L., additional, de Ona Wilhelmi, E., additional, Ostrowski, M., additional, Panter, M., additional, Panny, S., additional, Parsons, R. D., additional, Peron, G., additional, Peyaud, B., additional, Piel, Q., additional, Pita, S., additional, Poireau, V., additional, Noel, A. Priyana, additional, Prokhorov, D. A., additional, Prokoph, H., additional, Pühlhofer, G., additional, Punch, M., additional, Quirrenbach, A., additional, Rauth, R., additional, Reichherzer, P., additional, Reimer, A., additional, Reimer, O., additional, Remy, Q., additional, Renaud, M., additional, Rieger, F., additional, Rinchiuso, L., additional, Romoli, C., additional, Rowell, G., additional, Rudak, B., additional, Ruiz-Velasco, E., additional, Sahakian, V., additional, Sailer, S., additional, Sanchez, D. A., additional, Santangelo, A., additional, Sasaki, M., additional, Scalici, M., additional, Schutte, H. M., additional, Schwanke, U., additional, Schwemmer, S., additional, Seglar-Arroyo, M., additional, Senniappan, M., additional, Seyffert, A. S., additional, Shafi, N., additional, Shiningayamwe, K., additional, Simoni, R., additional, Sinha, A., additional, Sol, H., additional, Specovius, A., additional, Spencer, S., additional, Spir-Jacob, M., additional, Stawarz, Ł., additional, Sun, L., additional, Steenkamp, R., additional, Stegmann, C., additional, Steinmassl, S., additional, Steppa, C., additional, Takahashi, T., additional, Tavernier, T., additional, Taylor, A. M., additional, Terrier, R., additional, Tiziani, D., additional, Tluczykont, M., additional, Tomankova, L., additional, Trichard, C., additional, Tsirou, M., additional, Tuffs, R., additional, Uchiyama, Y., additional, van der Walt, D. J., additional, van Eldik, C., additional, van Rensburg, C., additional, van Soelen, B., additional, Vasileiadis, G., additional, Veh, J., additional, Venter, C., additional, Vincent, P., additional, Vink, J., additional, Völk, H. J., additional, Vuillaume, T., additional, Wadiasingh, Z., additional, Wagner, S. J., additional, Watson, J., additional, Werner, F., additional, White, R., additional, Wierzcholska, A., additional, Wong, Yu Wun, additional, Yusafzai, A., additional, Zacharias, M., additional, Zanin, R., additional, Zargaryan, D., additional, Zdziarski, A. A., additional, Zech, A., additional, Zhu, S. J., additional, Zorn, J., additional, Zouari, S., additional, Żywucka, N., additional, Acciari, V. A., additional, Ansoldi, S., additional, Antonelli, L. A., additional, Engels, A. Arbet, additional, Artero, M., additional, Asano, K., additional, Baack, D., additional, Babić, A., additional, Baquero, A., additional, de Almeida, U. Barres, additional, Barrio, J. A., additional, Becerra González, J., additional, Bednarek, W., additional, Bellizzi, L., additional, Bernardini, E., additional, Bernardos, M., additional, Berti, A., additional, Besenrieder, J., additional, Bhattacharyya, W., additional, Bigongiari, C., additional, Biland, A., additional, Blanch, O., additional, Bonnoli, G., additional, Bošnjak, Ž., additional, Busetto, G., additional, Carosi, R., additional, Ceribella, G., additional, Cerruti, M., additional, Chai, Y., additional, Chilingarian, A., additional, Cikota, S., additional, Colak, S. M., additional, Colombo, E., additional, Contreras, J. L., additional, Cortina, J., additional, Covino, S., additional, D’Amico, G., additional, D’Elia, V., additional, Da Vela, P., additional, Dazzi, F., additional, De Angelis, A., additional, De Lotto, B., additional, Delfino, M., additional, Delgado, J., additional, Delgado Mendez, C., additional, Depaoli, D., additional, Di Pierro, F., additional, Di Venere, L., additional, Do Souto Espiñeira, E., additional, Dominis Prester, D., additional, Donini, A., additional, Dorner, D., additional, Doro, M., additional, Elsaesser, D., additional, Fallah Ramazani, V., additional, Fattorini, A., additional, Ferrara, G., additional, Fonseca, M. V., additional, Font, L., additional, Fruck, C., additional, Fukami, S., additional, García López, R. J., additional, Garczarczyk, M., additional, Gasparyan, S., additional, Gaug, M., additional, Giglietto, N., additional, Giordano, F., additional, Gliwny, P., additional, Godinović, N., additional, Green, J. G., additional, Green, D., additional, Hadasch, D., additional, Hahn, A., additional, Heckmann, L., additional, Herrera, J., additional, Hoang, J., additional, Hrupec, D., additional, Hütten, M., additional, Inada, T., additional, Inoue, S., additional, Ishio, K., additional, Iwamura, Y., additional, Jiménez, I., additional, Jormanainen, J., additional, Jouvin, L., additional, Kajiwara, Y., additional, Karjalainen, M., additional, Kerszberg, D., additional, Kobayashi, Y., additional, Kubo, H., additional, Kushida, J., additional, Lamastra, A., additional, Lelas, D., additional, Leone, F., additional, Lindfors, E., additional, Lombardi, S., additional, Longo, F., additional, López-Coto, R., additional, López-Moya, M., additional, López-Oramas, A., additional, Loporchio, S., additional, Machado de Oliveira Fraga, B., additional, Maggio, C., additional, Majumdar, P., additional, Makariev, M., additional, Mallamaci, M., additional, Maneva, G., additional, Manganaro, M., additional, Mannheim, K., additional, Maraschi, L., additional, Mariotti, M., additional, Martínez, M., additional, Mazin, D., additional, Menchiari, S., additional, Mender, S., additional, Mićanović, S., additional, Miceli, D., additional, Miener, T., additional, Minev, M., additional, Miranda, J. M., additional, Mirzoyan, R., additional, Molina, E., additional, Moralejo, A., additional, Morcuende, D., additional, Moreno, V., additional, Moretti, E., additional, Neustroev, V., additional, Nigro, C., additional, Nilsson, K., additional, Nishijima, K., additional, Noda, K., additional, Nozaki, S., additional, Ohtani, Y., additional, Oka, T., additional, Otero-Santos, J., additional, Paiano, S., additional, Palatiello, M., additional, Paneque, D., additional, Paoletti, R., additional, Paredes, J. M., additional, Pavletić, L., additional, Peñil, P., additional, Perennes, C., additional, Persic, M., additional, Moroni, P. G. Prada, additional, Prandini, E., additional, Priyadarshi, C., additional, Puljak, I., additional, Rhode, W., additional, Ribó, M., additional, Rico, J., additional, Righi, C., additional, Rugliancich, A., additional, Saha, L., additional, Sahakyan, N., additional, Saito, T., additional, Sakurai, S., additional, Satalecka, K., additional, Saturni, F. G., additional, Schleicher, B., additional, Schmidt, K., additional, Schweizer, T., additional, Sitarek, J., additional, Šnidarić, I., additional, Sobczynska, D., additional, Spolon, A., additional, Stamerra, A., additional, Strom, D., additional, Strzys, M., additional, Suda, Y., additional, Surić, T., additional, Takahashi, M., additional, Tavecchio, F., additional, Temnikov, P., additional, Terzić, T., additional, Teshima, M., additional, Tosti, L., additional, Truzzi, S., additional, Tutone, A., additional, Ubach, S., additional, van Scherpenberg, J., additional, Vanzo, G., additional, Vazquez Acosta, M., additional, Ventura, S., additional, Verguilov, V., additional, Vigorito, C. F., additional, Vitale, V., additional, Vovk, I., additional, Will, M., additional, Wunderlich, C., additional, Zarić, D., additional, Adams, C. B., additional, Benbow, W., additional, Brill, A., additional, Capasso, M., additional, Christiansen, J. L., additional, Chromey, A. J., additional, Daniel, M. K., additional, Errando, M., additional, Farrell, K. A, additional, Feng, Q., additional, Finley, J. P., additional, Fortson, L., additional, Furniss, A., additional, Gent, A., additional, Giuri, C., additional, Hassan, T., additional, Hervet, O., additional, Holder, J., additional, Hughes, G., additional, Humensky, T. B., additional, Jin, W., additional, Kaaret, P., additional, Kertzman, M., additional, Kieda, D., additional, Kumar, S., additional, Lang, M. J., additional, Lundy, M., additional, Maier, G., additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, Nievas-Rosillo, M., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, A. N., additional, Patel, S., additional, Pfrang, K., additional, Pohl, M., additional, Prado, R. R., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Ribeiro, D., additional, Richards, G. T., additional, Roache, E., additional, Rulten, C., additional, Ryan, J. L., additional, Santander, M., additional, Sembroski, G. H., additional, Shang, R., additional, Weinstein, A., additional, Williams, D. A., additional, Williamson, T. J, additional, Hirota, Tomoya, additional, Cui, Lang, additional, Niinuma, Kotaro, additional, Ro, Hyunwook, additional, Sakai, Nobuyuki, additional, Sawada-Satoh, Satoko, additional, Wajima, Kiyoaki, additional, Wang, Na, additional, Liu, Xiang, additional, and Yonekura, Yoshinori, additional

Published
2021
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49. Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Author

Abdalla, H., primary, Abe, H., additional, Acero, F., additional, Acharyya, A., additional, Adam, R., additional, Agudo, I., additional, Aguirre-Santaella, A., additional, Alfaro, R., additional, Alfaro, J., additional, Alispach, C., additional, Aloisio, R., additional, Batista, R. Alves, additional, Amati, L., additional, Amato, E., additional, Ambrosi, G., additional, Angüner, E.O., additional, Araudo, A., additional, Armstrong, T., additional, Arqueros, F., additional, Arrabito, L., additional, Asano, K., additional, Ascasíbar, Y., additional, Ashley, M., additional, Backes, M., additional, Balazs, C., additional, Balbo, M., additional, Balmaverde, B., additional, Larriva, A. Baquero, additional, Martins, V. Barbosa, additional, Barkov, M., additional, Baroncelli, L., additional, de Almeida, U. Barres, additional, Barrio, J.A., additional, Batista, P.-I., additional, González, J. Becerra, additional, Becherini, Y., additional, Beck, G., additional, Tjus, J. Becker, additional, Belmont, R., additional, Benbow, W., additional, Bernardini, E., additional, Berti, A., additional, Berton, M., additional, Bertucci, B., additional, Beshley, V., additional, Bi, B., additional, Biasuzzi, B., additional, Biland, A., additional, Bissaldi, E., additional, Biteau, J., additional, Blanch, O., additional, Bocchino, F., additional, Boisson, C., additional, Bolmont, J., additional, Bonanno, G., additional, Arbeletche, L. Bonneau, additional, Bonnoli, G., additional, Bordas, P., additional, Bottacini, E., additional, Böttcher, M., additional, Bozhilov, V., additional, Bregeon, J., additional, Brill, A., additional, Brown, A.M., additional, Bruno, P., additional, Bruno, A., additional, Bulgarelli, A., additional, Burton, M., additional, Buscemi, M., additional, Caccianiga, A., additional, Cameron, R., additional, Capasso, M., additional, Caprai, M., additional, Caproni, A., additional, Capuzzo-Dolcetta, R., additional, Caraveo, P., additional, Carosi, R., additional, Carosi, A., additional, Casanova, S., additional, Cascone, E., additional, Cauz, D., additional, Cerny, K., additional, Cerruti, M., additional, Chadwick, P., additional, Chaty, S., additional, Chen, A., additional, Chernyakova, M., additional, Chiaro, G., additional, Chiavassa, A., additional, Chytka, L., additional, Conforti, V., additional, Conte, F., additional, Contreras, J.L., additional, Coronado-Blazquez, J., additional, Cortina, J., additional, Costa, A., additional, Costantini, H., additional, Covino, S., additional, Cristofari, P., additional, Cuevas, O., additional, D'Ammando, F., additional, Daniel, M.K., additional, Davies, J., additional, Dazzi, F., additional, Angelis, A. De, additional, de Lavergne, M. de Bony, additional, Caprio, V. De, additional, Anjos, R. de Cássia dos, additional, Pino, E.M. de Gouveia Dal, additional, Lotto, B. De, additional, Martino, D. De, additional, de Naurois, M., additional, Wilhelmi, E. de Oña, additional, Palma, F. De, additional, de Souza, V., additional, Delgado, C., additional, Ceca, R. Della, additional, Volpe, D. della, additional, Depaoli, D., additional, Girolamo, T. Di, additional, Pierro, F. Di, additional, Díaz, C., additional, Díaz-Bahamondes, C., additional, Diebold, S., additional, Djannati-Ataï, A., additional, Dmytriiev, A., additional, Domínguez, A., additional, Donini, A., additional, Dorner, D., additional, Doro, M., additional, Dournaux, J., additional, Dwarkadas, V.V., additional, Ebr, J., additional, Eckner, C., additional, Einecke, S., additional, Ekoume, T.R.N., additional, Elsässer, D., additional, Emery, G., additional, Evoli, C., additional, Fairbairn, M., additional, Falceta-Goncalves, D., additional, Fegan, S., additional, Feng, Q., additional, Ferrand, G., additional, Fiandrini, E., additional, Fiasson, A., additional, Fioretti, V., additional, Foffano, L., additional, Fonseca, M.V., additional, Font, L., additional, Fontaine, G., additional, Franco, F.J., additional, Coromina, L. Freixas, additional, Fukami, S., additional, Fukazawa, Y., additional, Fukui, Y., additional, Gaggero, D., additional, Galanti, G., additional, Gammaldi, V., additional, Garcia, E., additional, Garczarczyk, M., additional, Gascon, D., additional, Gaug, M., additional, Gent, A., additional, Ghalumyan, A., additional, Ghirlanda, G., additional, Gianotti, F., additional, Giarrusso, M., additional, Giavitto, G., additional, Giglietto, N., additional, Giordano, F., additional, Glicenstein, J., additional, Goldoni, P., additional, González, J.M., additional, Gourgouliatos, K., additional, Grabarczyk, T., additional, Grandi, P., additional, Granot, J., additional, Grasso, D., additional, Green, J., additional, Grube, J., additional, Gueta, O., additional, Gunji, S., additional, Halim, A., additional, Harvey, M., additional, Collado, T. Hassan, additional, Hayashi, K., additional, Heller, M., additional, Cadena, S. Hernández, additional, Hervet, O., additional, Hinton, J., additional, Hiroshima, N., additional, Hnatyk, B., additional, Hnatyk, R., additional, Hoffmann, D., additional, Hofmann, W., additional, Holder, J., additional, Horan, D., additional, Hörandel, J., additional, Horvath, P., additional, Hovatta, T., additional, Hrabovsky, M., additional, Hrupec, D., additional, Hughes, G., additional, Hütten, M., additional, Iarlori, M., additional, Inada, T., additional, Inoue, S., additional, Insolia, A., additional, Ionica, M., additional, Iori, M., additional, Jacquemont, M., additional, Jamrozy, M., additional, Janecek, P., additional, Martínez, I. Jiménez, additional, Jin, W., additional, Jung-Richardt, I., additional, Jurysek, J., additional, Kaaret, P., additional, Karas, V., additional, Karkar, S., additional, Kawanaka, N., additional, Kerszberg, D., additional, Khélifi, B., additional, Kissmann, R., additional, Knödlseder, J., additional, Kobayashi, Y., additional, Kohri, K., additional, Komin, N., additional, Kong, A., additional, Kosack, K., additional, Kubo, H., additional, Palombara, N. La, additional, Lamanna, G., additional, Lang, R.G., additional, Lapington, J., additional, Laporte, P., additional, Lefaucheur, J., additional, Lemoine-Goumard, M., additional, Lenain, J., additional, Leone, F., additional, Leto, G., additional, Leuschner, F., additional, Lindfors, E., additional, Lloyd, S., additional, Lohse, T., additional, Lombardi, S., additional, Longo, F., additional, Lopez, A., additional, López, M., additional, López-Coto, R., additional, Loporchio, S., additional, Lucarelli, F., additional, Luque-Escamilla, P.L., additional, Lyard, E., additional, Maggio, C., additional, Majczyna, A., additional, Makariev, M., additional, Mallamaci, M., additional, Mandat, D., additional, Maneva, G., additional, Manganaro, M., additional, Manicò, G., additional, Marcowith, A., additional, Marculewicz, M., additional, Markoff, S., additional, Marquez, P., additional, Martí, J., additional, Martinez, O., additional, Martínez, M., additional, Martínez, G., additional, Martínez-Huerta, H., additional, Maurin, G., additional, Mazin, D., additional, Mbarubucyeye, J.D., additional, Miranda, D. Medina, additional, Meyer, M., additional, Micanovic, S., additional, Miener, T., additional, Minev, M., additional, Miranda, J.M., additional, Mitchell, A., additional, Mizuno, T., additional, Mode, B., additional, Moderski, R., additional, Mohrmann, L., additional, Molina, E., additional, Montaruli, T., additional, Moralejo, A., additional, Merino, J. Morales, additional, Morcuende-Parrilla, D., additional, Morselli, A., additional, Mukherjee, R., additional, Mundell, C., additional, Murach, T., additional, Muraishi, H., additional, Nagai, A., additional, Nakamori, T., additional, Nemmen, R., additional, Niemiec, J., additional, Nieto, D., additional, Nievas, M., additional, Nikolajuk, M., additional, Nishijima, K., additional, Noda, K., additional, Nosek, D., additional, Nozaki, S., additional, O'Brien, P., additional, Ohira, Y., additional, Ohishi, M., additional, Oka, T., additional, Ong, R.A., additional, Orienti, M., additional, Orito, R., additional, Orlandini, M., additional, Orlando, E., additional, Osborne, J.P., additional, Ostrowski, M., additional, Oya, I., additional, Pagliaro, A., additional, Palatka, M., additional, Paneque, D., additional, Pantaleo, F.R., additional, Paredes, J.M., additional, Parmiggiani, N., additional, Patricelli, B., additional, Pavletić, L., additional, Pe'er, A., additional, Pech, M., additional, Pecimotika, M., additional, Peresano, M., additional, Persic, M., additional, Petruk, O., additional, Pfrang, K., additional, Piatteli, P., additional, Pietropaolo, E., additional, Pillera, R., additional, Pilszyk, B., additional, Pimentel, D., additional, Pintore, F., additional, Pita, S., additional, Pohl, M., additional, Poireau, V., additional, Polo, M., additional, Prado, R.R., additional, Prast, J., additional, Principe, G., additional, Produit, N., additional, Prokoph, H., additional, Prouza, M., additional, Przybilski, H., additional, Pueschel, E., additional, Pühlhofer, G., additional, Pumo, M.L., additional, Punch, M., additional, Queiroz, F., additional, Quirrenbach, A., additional, Rando, R., additional, Razzaque, S., additional, Rebert, E., additional, Recchia, S., additional, Reichherzer, P., additional, Reimer, O., additional, Reimer, A., additional, Renier, Y., additional, Reposeur, T., additional, Rhode, W., additional, Ribeiro, D., additional, Ribó, M., additional, Richtler, T., additional, Rico, J., additional, Rieger, F., additional, Rizi, V., additional, Rodriguez, J., additional, Fernandez, G. 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Seglar, additional, Sergijenko, O., additional, Servillat, M., additional, Seweryn, K., additional, Shalchi, A., additional, Sharma, P., additional, Shellard, R.C., additional, Siejkowski, H., additional, Sinha, A., additional, Sliusar, V., additional, Slowikowska, A., additional, Sokolenko, A., additional, Sol, H., additional, Specovius, A., additional, Spencer, S., additional, Spiga, D., additional, Stamerra, A., additional, Stanič, S., additional, Starling, R., additional, Stolarczyk, T., additional, Straumann, U., additional, Strišković, J., additional, Suda, Y., additional, Świerk, P., additional, Tagliaferri, G., additional, Takahashi, H., additional, Takahashi, M., additional, Tavecchio, F., additional, Taylor, L., additional, Tejedor, L.A., additional, Temnikov, P., additional, Terrier, R., additional, Terzic, T., additional, Testa, V., additional, Tian, W., additional, Tibaldo, L., additional, Tonev, D., additional, Torres, D.F., additional, Torresi, E., additional, Tosti, L., additional, Tothill, N., additional, Tovmassian, G., additional, Travnicek, P., additional, Truzzi, S., additional, Tuossenel, F., additional, Umana, G., additional, Vacula, M., additional, Vagelli, V., additional, Valentino, M., additional, Vallage, B., additional, Vallania, P., additional, Eldik, C. van, additional, Varner, G.S., additional, Vassiliev, V., additional, Acosta, M. Vázquez, additional, Vecchi, M., additional, Veh, J., additional, Vercellone, S., additional, Vergani, S., additional, Verguilov, V., additional, Vettolani, G.P., additional, Viana, A., additional, Vigorito, C.F., additional, Vitale, V., additional, Vorobiov, S., additional, Vovk, I., additional, Vuillaume, T., additional, Wagner, S.J., additional, Walter, R., additional, Watson, J., additional, White, M., additional, White, R., additional, Wiemann, R., additional, Wierzcholska, A., additional, Will, M., additional, Williams, D.A., additional, Wischnewski, R., additional, Wolter, A., additional, Yamazaki, R., additional, Yanagita, S., additional, Yang, L., additional, Yoshikoshi, T., additional, Zacharias, M., additional, Zaharijas, G., additional, Zaric, D., additional, Zavrtanik, M., additional, Zavrtanik, D., additional, Zdziarski, A.A., additional, Zech, A., additional, Zechlin, H., additional, Zhdanov, V.I., additional, and Živec, M., additional

Published
2021
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50. Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre

Author

Acharyya, A., primary, Adam, R., additional, Adams, C., additional, Agudo, I., additional, Aguirre-Santaella, A., additional, Alfaro, R., additional, Alfaro, J., additional, Alispach, C., additional, Aloisio, R., additional, Batista, R. Alves, additional, Amati, L., additional, Ambrosi, G., additional, Angüner, E.O., additional, Antonelli, L.A., additional, Aramo, C., additional, Araudo, A., additional, Armstrong, T., additional, Arqueros, F., additional, Asano, K., additional, Ascasíbar, Y., additional, Ashley, M., additional, Balazs, C., additional, Ballester, O., additional, Larriva, A. Baquero, additional, Martins, V. Barbosa, additional, Barkov, M., additional, de Almeida, U. Barres, additional, Barrio, J.A., additional, Bastieri, D., additional, Becerra, J., additional, Beck, G., additional, Tjus, J. Becker, additional, Benbow, W., additional, Benito, M., additional, Berge, D., additional, Bernardini, E., additional, Bernlöhr, K., additional, Berti, A., additional, Bertucci, B., additional, Beshley, V., additional, Biasuzzi, B., additional, Biland, A., additional, Bissaldi, E., additional, Biteau, J., additional, Blanch, O., additional, Blazek, J., additional, Bocchino, F., additional, Boisson, C., additional, Arbeletche, L. Bonneau, additional, Bordas, P., additional, Bosnjak, Z., additional, Bottacini, E., additional, Bozhilov, V., additional, Bregeon, J., additional, Brill, A., additional, Bringmann, T., additional, Brown, A.M., additional, Brun, P., additional, Brun, F., additional, Bruno, P., additional, Bulgarelli, A., additional, Burton, M., additional, Burtovoi, A., additional, Buscemi, M., additional, Cameron, R., additional, Capasso, M., additional, Caproni, A., additional, Capuzzo-Dolcetta, R., additional, Caraveo, P., additional, Carosi, R., additional, Carosi, A., additional, Casanova, S., additional, Cascone, E., additional, Cassol, F., additional, Catalani, F., additional, Cauz, D., additional, Cerruti, M., additional, Chadwick, P., additional, Chaty, S., additional, Chen, A., additional, Chernyakova, M., additional, Chiaro, G., additional, Chiavassa, A., additional, Chikawa, M., additional, Chudoba, J., additional, Çolak, M., additional, Conforti, V., additional, Coniglione, R., additional, Conte, F., additional, Contreras, J.L., additional, Coronado-Blazquez, J., additional, Costa, A., additional, Costantini, H., additional, Cotter, G., additional, Cristofari, P., additional, D'A𝚤, A., additional, D'Ammando, F., additional, Damone, L.A., additional, Daniel, M.K., additional, Dazzi, F., additional, Angelis, A. De, additional, Caprio, V. De, additional, Anjos, R. de Cássia dos, additional, Pino, E.M. de Gouveia Dal, additional, Lotto, B. De, additional, Martino, D. De, additional, Wilhelmi, E. de Oña, additional, Palma, F. De, additional, de Souza, V., additional, Delgado, C., additional, Giler, A.G. Delgado, additional, Volpe, D. della, additional, Depaoli, D., additional, Girolamo, T. Di, additional, Pierro, F. Di, additional, Venere, L. Di, additional, Diebold, S., additional, Dmytriiev, A., additional, Domínguez, A., additional, Donini, A., additional, Doro, M., additional, Ebr, J., additional, Eckner, C., additional, Edwards, T. D. P., additional, Ekoume, T.R.N., additional, Elsässer, D., additional, Evoli, C., additional, Falceta-Goncalves, D., additional, Fedorova, E., additional, Fegan, S., additional, Feng, Q., additional, Ferrand, G., additional, Ferrara, G., additional, Fiandrini, E., additional, Fiasson, A., additional, Filipovic, M., additional, Fioretti, V., additional, Fiori, M., additional, Foffano, L., additional, Fontaine, G., additional, Fornieri, O., additional, Franco, F.J., additional, Fukami, S., additional, Fukui, Y., additional, Gaggero, D., additional, Galaz, G., additional, Gammaldi, V., additional, Garcia, E., additional, Garczarczyk, M., additional, Gascon, D., additional, Gent, A., additional, Ghalumyan, A., additional, Gianotti, F., additional, Giarrusso, M., additional, Giavitto, G., additional, Giglietto, N., additional, Giordano, F., additional, Giuliani, A., additional, Glicenstein, J., additional, Gnatyk, R., additional, Goldoni, P., additional, González, M.M., additional, Gourgouliatos, K., additional, Granot, J., additional, Grasso, D., additional, Green, J., additional, Grillo, A., additional, Gueta, O., additional, Gunji, S., additional, Halim, A., additional, Hassan, T., additional, Heller, M., additional, Cadena, S. Hernández, additional, Hiroshima, N., additional, Hnatyk, B., additional, Hofmann, W., additional, Holder, J., additional, Horan, D., additional, Hörandel, J., additional, Horvath, P., additional, Hovatta, T., additional, Hrabovsky, M., additional, Hrupec, D., additional, Hughes, G., additional, Humensky, T.B., additional, Hütten, M., additional, Iarlori, M., additional, Inada, T., additional, Inoue, S., additional, Iocco, F., additional, Iori, M., additional, Jamrozy, M., additional, Janecek, P., additional, Jin, W., additional, Jouvin, L., additional, Jurysek, J., additional, Karukes, E., additional, Katarzyński, K., additional, Kazanas, D., additional, Kerszberg, D., additional, Kherlakian, M.C., additional, Kissmann, R., additional, Knödlseder, J., additional, Kobayashi, Y., additional, Kohri, K., additional, Komin, N., additional, Kubo, H., additional, Kushida, J., additional, Lamanna, G., additional, Lapington, J., additional, Laporte, P., additional, de Oliveira, M.A. Leigui, additional, Lenain, J., additional, Leone, F., additional, Leto, G., additional, Lindfors, E., additional, Lohse, T., additional, Lombardi, S., additional, Longo, F., additional, Lopez, A., additional, López, M., additional, López-Coto, R., additional, Loporchio, S., additional, Luque-Escamilla, P.L., additional, Mach, E., additional, Maggio, C., additional, Maier, G., additional, Mallamaci, M., additional, de Almeida, R. Malta Nunes, additional, Mandat, D., additional, Manganaro, M., additional, Mangano, S., additional, Manicò, G., additional, Marculewicz, M., additional, Mariotti, M., additional, Markoff, S., additional, Marquez, P., additional, Martí, J., additional, Martinez, O., additional, Martínez, M., additional, Martínez, G., additional, Martínez-Huerta, H., additional, Maurin, G., additional, Mazin, D., additional, Mbarubucyeye, J.D., additional, Miranda, D. Medina, additional, Meyer, M., additional, Miceli, M., additional, Miener, T., additional, Minev, M., additional, Miranda, J.M., additional, Mirzoyan, R., additional, Mizuno, T., additional, Mode, B., additional, Moderski, R., additional, Mohrmann, L., additional, Molina, E., additional, Montaruli, T., additional, Moralejo, A., additional, Morcuende-Parrilla, D., additional, Morselli, A., additional, Mukherjee, R., additional, Mundell, C., additional, Nagai, A., additional, Nakamori, T., additional, Nemmen, R., additional, Niemiec, J., additional, Nieto, D., additional, Nikołajuk, M., additional, Ninci, D., additional, Noda, K., additional, Nosek, D., additional, Nozaki, S., additional, Ohira, Y., additional, Ohishi, M., additional, Ohtani, Y., additional, Oka, T., additional, Okumura, A., additional, Ong, R.A., additional, Orienti, M., additional, Orito, R., additional, Orlandini, M., additional, Orlando, S., additional, Orlando, E., additional, Ostrowski, M., additional, Oya, I., additional, Pagano, I., additional, Pagliaro, A., additional, Palatiello, M., additional, Pantaleo, F.R., additional, Paredes, J.M., additional, Pareschi, G., additional, Parmiggiani, N., additional, Patricelli, B., additional, Pavletić, L., additional, Pe'er, A., additional, Pecimotika, M., additional, Pérez-Romero, J., additional, Persic, M., additional, Petruk, O., additional, Pfrang, K., additional, Piano, G., additional, Piatteli, P., additional, Pietropaolo, E., additional, Pillera, R., additional, Pilszyk, B., additional, Pintore, F., additional, Pohl, M., additional, Poireau, V., additional, Prado, R.R., additional, Prandini, E., additional, Prast, J., additional, Principe, G., additional, Prokoph, H., additional, Prouza, M., additional, Przybilski, H., additional, Pühlhofer, G., additional, Pumo, M.L., additional, Queiroz, F., additional, Quirrenbach, A., additional, Rainò, S., additional, Rando, R., additional, Razzaque, S., additional, Recchia, S., additional, Reimer, O., additional, Reisenegger, A., additional, Renier, Y., additional, Rhode, W., additional, Ribeiro, D., additional, Ribó, M., additional, Richtler, T., additional, Rico, J., additional, Rieger, F., additional, Rinchiuso, L., additional, Rizi, V., additional, Rodriguez, J., additional, Fernandez, G. Rodriguez, additional, Ramirez, J.C. Rodriguez, additional, Rojas, G., additional, Romano, P., additional, Romeo, G., additional, Rosado, J., additional, Rowell, G., additional, Rudak, B., additional, Russo, F., additional, Sadeh, I., additional, Sæther Hatlen, E., additional, Safi-Harb, S., additional, Greus, F. Salesa, additional, Salina, G., additional, Sanchez, D., additional, Sánchez-Conde, M., additional, Sangiorgi, P., additional, Sano, H., additional, Santander, M., additional, Santos, E.M., additional, Santos-Lima, R., additional, Sanuy, A., additional, Sarkar, S., additional, Saturni, F.G., additional, Sawangwit, U., additional, Schussler, F., additional, Schwanke, U., additional, Sciacca, E., additional, Scuderi, S., additional, Seglar-Arroyo, M., additional, Sergijenko, O., additional, Servillat, M., additional, Seweryn, K., additional, Shalchi, A., additional, Sharma, P., additional, Shellard, R.C., additional, Siejkowski, H., additional, Silk, J., additional, Siqueira, C., additional, Sliusar, V., additional, Słowikowska, A., additional, Sokolenko, A., additional, Sol, H., additional, Spencer, S., additional, Stamerra, A., additional, Stanič, S., additional, Starling, R., additional, Stolarczyk, T., additional, Straumann, U., additional, Strišković, J., additional, Suda, Y., additional, Suomijarvi, T., additional, Świerk, P., additional, Tavecchio, F., additional, Taylor, L., additional, Tejedor, L.A., additional, Teshima, M., additional, Testa, V., additional, Tibaldo, L., additional, Peixoto, C.J. Todero, additional, Tokanai, F., additional, Tonev, D., additional, Tosti, G., additional, Tosti, L., additional, Tothill, N., additional, Truzzi, S., additional, Travnicek, P., additional, Vagelli, V., additional, Vallage, B., additional, Vallania, P., additional, Eldik, C. van, additional, Vandenbroucke, J., additional, Varner, G.S., additional, Vassiliev, V., additional, Acosta, M. Vázquez, additional, Vecchi, M., additional, Ventura, S., additional, Vercellone, S., additional, Vergani, S., additional, Verna, G., additional, Viana, A., additional, Vigorito, C.F., additional, Vink, J., additional, Vitale, V., additional, Vorobiov, S., additional, Vovk, I., additional, Vuillaume, T., additional, Wagner, S.J., additional, Walter, R., additional, Watson, J., additional, Weniger, C., additional, White, R., additional, White, M., additional, Wiemann, R., additional, Wierzcholska, A., additional, Will, M., additional, Williams, D.A., additional, Wischnewski, R., additional, Yanagita, S., additional, Yang, L., additional, Yoshikoshi, T., additional, Zacharias, M., additional, Zaharijas, G., additional, Zakaria, A.A., additional, Zampieri, L., additional, Zanin, R., additional, Zaric, D., additional, Zavrtanik, M., additional, Zavrtanik, D., additional, Zdziarski, A.A., additional, Zech, A., additional, Zechlin, H., additional, Zhdanov, V.I., additional, and Živec, M., additional

Published
2021
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