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1. MAGIC upper limits on the GRB 090102 afterglow

Author: M. Gaug, Elisa Bernardini, Gianluca Giavitto, A. González Muñoz, C. Delgado Mendez, Victor Stamatescu, T. Schweizer, A. De Angelis, Mosè Mariotti, A.-K. Overkemping, D. Dominis Prester, Robert Wagner, L. A. Antonelli, Julian Sitarek, Saverio Lombardi, M. L. Knoetig, P. Antoranz, J. Hose, Natalia Lewandowska, T. Toyama, A. Sillanpää, Nikola Godinovic, Takashi Saito, P. Temnikov, Benito Marcote, Abelardo Moralejo, A. La Barbera, Fabrizio Tavecchio, M. V. Fonseca, A. Bouvier, J. Moldón, D. Garrido Terrats, Konstancja Satalecka, Ll. Font, Reiko Orito, Francisco Prada, W. Idec, Julia Thaele, Michele Doro, M. Palatiello, Dario Hrupec, Jelena Aleksić, M. A. Lopez, E. Colombo, P. Da Vela, V. Scalzotto, Dominik Elsaesser, U. Barres de Almeida, A. Niedzwiecki, M. Doert, Damir Lelas, Fabio Zandanel, Ralph Bock, L. O. Takalo, K. Frantzen, Q. Weitzel, Tihomir Surić, M. Uellenbeck, David Paneque, Francesco Dazzi, Patrick Vogler, Hiroyasu Tajima, I. Snidaric, D. Carreto Fidalgo, Ana Babić, Dorota Sobczyńska, G. De Caneva, U. Menzel, M. Salvati, Stefano Ansoldi, S. Rügamer, Juan Abel Barrio, Riccardo Paoletti, Nina Nowak, Diego F. Torres, A. Herrero, Christian Fruck, S. Partini, M. Hayashida, Francesco Longo, E. Lorenz, S. Paiano, Kari Nilsson, Karl Mannheim, Nijil Mankuzhiyil, K. Berger, P. Munar-Adrover, I. Lozano, D. Hadasch, Giacomo Bonnoli, E. Prandini, J. M. Paredes, M. Garczarczyk, Antonio Stamerra, Silvia Preziuso, Marc Ribó, P. G. Prada Moroni, J. Kushida, Aldo Treves, Jose Luis Contreras, J. Krause, B. De Lotto, Masahiro Teshima, O. Tibolla, Juan Cortina, Martin Makariev, Oscar Blanch, Tomislav Terzić, A. Hadamek, J. Storz, Ivica Puljak, Alicia López-Oramas, Pierre Colin, J. Becerra González, Emanuele Paolo Farina, S. Bonnefoy, Aaron Dominguez, Mario Meucci, R. Mirzoyan, D. Eisenacher, E. Carmona, Daniel Ferenc, Thomas Bretz, S. N. Shore, Wlodek Bednarek, Alessandro Carosi, Ruben Lopez-Coto, Felix Spanier, D. Nakajima, C. Schultz, V. Scapin, Jose Miguel Miranda, F. Borracci, Wolfgang Rhode, Ignasi Reichardt, G. Maneva, R. Zanin, A. Saggion, Adrian Biland, J. Rico, R. Reinthal, L. Maraschi, Elina Lindfors, Daniel Mazin, K. Mallot, R. J. García López, Stefano Covino, S. Sun, Massimo Persic, A. Boller, L. Cossio, D. Tescaro, T. Krähenbühl, K. Saito, J. Masbou, M. I. Martínez, V. Kadenius, S. R. Gozzini, J. Rodriguez Garcia, Daniela Dorner, J., Aleksic, S., Ansoldi, L. A., Antonelli, P., Antoranz, A., Babic, U. B., de Almeida, J. A., Barrio, J. B., Gonzalez, W., Bednarek, K., Berger, E., Bernardini, A., Biland, O., Blanch, R. K., Bock, A., Boller, S., Bonnefoy, G., Bonnoli, F., Borracci, T., Bretz, E., Carmona, A., Carosi, D. C., Fidalgo, P., Colin, E., Colombo, J. L., Contrera, J., Cortina, L., Cossio, S., Covino, P., Da Vela, F., Dazzi, A., De Angeli, G., De Caneva, B., De Lotto, C. D., Mendez, M., Doert, A., Dominguez, D. D., Prester, D., Dorner, M., Doro, D., Eisenacher, D., Elsaesser, E., Farina, D., Ferenc, M. V., Fonseca, L., Font, K., Frantzen, C., Fruck, R. J. G., Lopez, M., Garczarczyk, D. G., Terrat, M., Gaug, G., Giavitto, N., Godinovic, A. G., Munoz, S. R., Gozzini, A., Hadamek, D., Hadasch, A., Herrero, J., Hose, D., Hrupec, W., Idec, V., Kadeniu, M. L., Knoetig, T., Krahenbuhl, J., Krause, J., Kushida, A. L., Barbera, D., Lela, N., Lewandowska, E., Lindfor, S., Lombardi, R., Lopez Coto, M., Lopez, A., Lopez Orama, E., Lorenz, I., Lozano, M., Makariev, K., Mallot, G., Maneva, N., Mankuzhiyil, K., Mannheim, L., Maraschi, B., Marcote, M., Mariotti, M., Martinez, J., Masbou, D., Mazin, U., Menzel, M., Meucci, J. M., Miranda, R., Mirzoyan, J., Moldon, A., Moralejo, P., Munar Adrover, D., Nakajima, A., Niedzwiecki, K., Nilsson, N., Nowak, R., Orito, A., Overkemping, S., Paiano, M., Palatiello, D., Paneque, R., Paoletti, J. M., Parede, S., Partini, M., Persic, F., Prada, P. G. P., Moroni, E., Prandini, S., Preziuso, I., Puljak, I., Reichardt, R., Reinthal, W., Rhode, M., Ribo, J., Rico, J. R., Garcia, S., Rugamer, A., Saggion, K., Saito, T., Saito, M., Salvati, K., Satalecka, V., Scalzotto, V., Scapin, C., Schultz, T., Schweizer, S. N., Shore, A., Sillanpaa, J., Sitarek, I., Snidaric, D., Sobczynska, F., Spanier, V., Stamatescu, A., Stamerra, J., Storz, S., Sun, T., Suric, L., Takalo, F., Tavecchio, P., Temnikov, T., Terzic, D., Tescaro, M., Teshima, J., Thaele, O., Tibolla, D. F., Torre, T., Toyama, A., Treve, M., Uellenbeck, P., Vogler, R. M., Wagner, Q., Weitzel, F., Zandanel, R., Zanin, A., Bouvier, M., Hayashida, H., Tajima, and Longo, Francesco
Subjects: Photon, General, Non-thermal - gamma-ray burst, Radiation mechanisms, Astrophysics::High Energy Astrophysical Phenomena, gamma-ray burst: general, Hadron, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, general [gamma-ray burst], 7. Clean energy, 01 natural sciences, law.invention, Telescope, law, 0103 physical sciences, MAGIC (telescope), 010306 general physics, 010303 astronomy & astrophysics, Cherenkov radiation, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Physics, ta115, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, radiation mechanisms: non-thermal, non-thermal [radiation mechanisms], Afterglow, gamma-rays bursts: general, Space and Planetary Science, ddc:520, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Gamma-ray burst, Fermi Gamma-ray Space Telescope
Abstract: Indications of a GeV component in the emission from GRBs are known since the EGRET observations during the 1990's and they have been confirmed by the data of the Fermi satellite. These results have, however, shown that our understanding of GRB physics is still unsatisfactory. The new generation of Cherenkov observatories and in particular the MAGIC telescope, allow for the first time the possibility to extend the measurement of GRBs from several tens up to hundreds of GeV energy range. Both leptonic and hadronic processes have been suggested to explain the possible GeV/TeV counterpart of GRBs. Observations with ground-based telescopes of very high energy photons (E>30 GeV) from these sources are going to play a key role in discriminating among the different proposed emission mechanisms, which are barely distinguishable at lower energies. MAGIC telescope observations of the GRB 090102 (z=1.547) field and Fermi Large Area Telescope (LAT) data in the same time interval are analysed to derive upper limits of the GeV/TeV emission. We compare these results to the expected emissions evaluated for different processes in the framework of a relativistic blast wave model for the afterglow. Simultaneous upper limits with Fermi and a Cherenkov telescope have been derived for this GRB observation. The results we obtained are compatible with the expected emission although the difficulties in predicting the HE and VHE emission for the afterglow of this event makes it difficult to draw firmer conclusions. Nonetheless, MAGIC sensitivity in the energy range of overlap with space-based instruments (above about 40 GeV) is about one order of magnitude better with respect to Fermi. This makes evident the constraining power of ground-based observations and shows that the MAGIC telescope has reached the required performance to make possible GRB multiwavelength studies in the very high energy range., 8 pages, 5 figures, 2 tables. Submitted to MNRAS
Published: 2014
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2. Molecular gas in the centre of nearby galaxies from VLT/SINFONI integral field spectroscopy – I. Morphology and mass inventory★

Author: M. H. Fabricius, Roberto P. Saglia, S. P. Rusli, Nina Nowak, J. Thomas, Michael J. Williams, Peter Erwin, Ralf Bender, M. Opitsch, and X. Mazzalay
Subjects: Luminous infrared galaxy, Physics, Very Large Telescope, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Star formation, FOS: Physical sciences, Astronomy, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Luminosity, Stars, Space and Planetary Science, Astrophysics::Solar and Stellar Astrophysics, Emission spectrum, Equivalent width, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present the first results of an analysis of the properties of the molecular gas in the nuclear regions (r < 300 pc) of a sample of six nearby galaxies, based on new high spatial resolution observations obtained in the K-band with the near-infrared integral field spectrograph SINFONI at the Very Large Telescope. We derive two-dimensional distributions of the warm molecular and ionized gas from the H2, Br_gamma and HeI emission lines present in the spectra of the galaxies. We find a range of morphologies, including bar- and ring-like distributions and either centrally peaked or off-centre emission. The morphologies of the molecular and the ionized gas are not necessarily coincident. The observed emission-line ratios point towards thermal processes as the principal mechanism responsible for the H2 excitation in the nuclear and circumnuclear regions of the galaxies, independently of the presence of an active nucleus. We find that a rescaling of the H2 2.12 microns emission-line luminosity by a factor beta~1200 gives a good estimate (within a factor of 2) of the total (cold) molecular gas mass. The galaxies of the sample contain large quantities of molecular gas in their centres, with total masses in the ~ 105 - 108 Msol range. Never the less, these masses correspond to less than 3 per cent of the stellar masses derived for the galaxies in these regions, indicating that the presence of gas should not affect black hole mass estimates based on the dynamical modelling of the stars. The high-spatial resolution provided by the SINFONI data allowed us to resolve a circumnuclear ring (with a radius of ~270 pc) in the galaxy NGC 4536. The measured values of the Br_gamma equivalent width and the HeI/Br_gamma emission-line ratio suggests that bursts of star formation occurred throughout this ring as recently as 6.5 Myr ago., 20 pages, 11 figures. Accepted for publication in MNRAS
Published: 2012
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3. The central black hole mass of the high-σ but low-bulge-luminosity lenticular galaxy NGC 1332★

Author: S. P. Rusli, Roberto P. Saglia, Jens Thomas, Nina Nowak, Ralf Bender, and Peter Erwin
Subjects: Physics, Supermassive black hole, Sphere of influence (black hole), Astrophysics::High Energy Astrophysical Phenomena, Sigma, Velocity dispersion, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Luminosity, Black hole, Space and Planetary Science, Bulge, Astrophysics::Galaxy Astrophysics
Abstract: The masses of the most massive supermassive black holes (SMBHs) predicted by the M_BH-sigma and M_BH-luminosity relations appear to be in conflict. Which of the two relations is the more fundamental one remains an open question. NGC 1332 is an excellent example that represents the regime of conflict. It is a massive lenticular galaxy which has a bulge with a high velocity dispersion sigma of ~320 km/s; bulge--disc decomposition suggests that only 44% of the total light comes from the bulge. The M_BH-sigma and the M_BH-luminosity predictions for the central black hole mass of NGC 1332 differ by almost an order of magnitude. We present a stellar dynamical measurement of the SMBH mass using an axisymmetric orbit superposition method. Our SINFONI integral-field unit (IFU) observations of NGC 1332 resolve the SMBH's sphere of influence which has a diameter of ~0.76 arcsec. The sigma inside 0.2 arcsec reaches ~400 km/s. The IFU data allow us to increase the statistical significance of our results by modelling each of the four quadrants separately. We measure a SMBH mass of (1.45 \pm 0.20) x 10^9 M_sun with a bulge mass-to-light ratio of 7.08 \pm 0.39 in the R-band. With this mass, the SMBH of NGC 1332 is offset from the M_BH-luminosity relation by a full order of magnitude but is consistent with the M_BH-sigma relation.
Published: 2010
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4. Do black hole masses scale with classical bulge luminosities only? The case of the two composite pseudo-bulge galaxies NGC 3368 and NGC 3489★

Author: Peter Erwin, Jens Thomas, Richard Davies, Roberto P. Saglia, Ralf Bender, and Nina Nowak
Subjects: Physics, Supermassive black hole, Spiral galaxy, Stellar population, Astrophysics::High Energy Astrophysical Phenomena, Velocity dispersion, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Black hole, Space and Planetary Science, Bulge, Magnitude (astronomy), Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: It is now well established that all galaxies with a massive bulge component harbour a central supermassive black hole (SMBH). The mass of the SMBH correlates with bulge properties such as the bulge mass and the velocity dispersion, which implies that the bulge and the SMBH of a galaxy have grown together during the formation process. The spiral galaxy NGC3368 and the S0 galaxy NGC3489 both host a pseudobulge and a much smaller classical bulge component at the centre. We present high resolution, near-infrared IFU data of these two galaxies, taken with SINFONI at the VLT, and use axisymmetric orbit models to determine the masses of the SMBHs. The SMBH mass of NGC3368 is M_BH=7.5x10^6 M_sun with an error of 1.5x10^6 M_sun, which mostly comes from the non-axisymmetry in the data. For NGC3489, a solution without black hole cannot be excluded when modelling the SINFONI data alone, but can be clearly ruled out when modelling a combination of SINFONI, OASIS and SAURON data, for which we obtain M_BH=6.00^{+0.56}_{-0.54} (stat) +/- 0.64 (sys) x 10^6 M_sun. Although both galaxies seem to be consistent with the M_BH-sigma relation, at face value they do not agree with the relation between bulge magnitude and black hole mass when the total bulge magnitude (i.e., including both classical bulge and pseudobulge) is considered; the agreement is better when only the small classical bulge components are considered. However, taking into account the ageing of the stellar population could change this conclusion.
Published: 2010
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5. First broadband characterization and redshift determination of the VHE blazar MAGIC J2001+439

Author: Robert Wagner, Konstancja Satalecka, Michele Doro, K. Nishijima, K. Mallot, R. J. García López, A. Herrero, D. Dominis Prester, M. Uellenbeck, Nina Nowak, J. M. Paredes, A. López-Oramas, J. Kushida, Antonio Stamerra, Jelena Aleksić, Nikola Godinovic, Benito Marcote, Jose Luis Contreras, A. Niedzwiecki, David Paneque, Wlodek Bednarek, Alessandro Carosi, Francisco Prada, J. L. Richards, Juan Cortina, K. Kodani, Ruben Lopez-Coto, Massimo Persic, D. Nakajima, J. Storz, D. Garrido Terrats, Talvikki Hovatta, Patrick Vogler, P. G. Prada Moroni, Valeri M. Larionov, Jose Miguel Miranda, V. Scalzotto, C. Schultz, V. Scapin, Tomislav Terzić, Yusuke Konno, Anthony C. S. Readhead, J. Krause, O. Tibolla, M. Hayashida, B. De Lotto, P. Da Vela, Ana Babić, Hanna Kellermann, L. Maraschi, Elina Lindfors, Kari Nilsson, Daniel Mazin, Marc Ribó, M. V. Fonseca, P. Bangale, Julia Thaele, Hidetoshi Kubo, Stefano Covino, U. Menzel, Emanuele Paolo Farina, A. De Angelis, D. Tescaro, M. Perri, I. Snidaric, Natalia Lewandowska, M. Palatiello, Diego F. Torres, S. Rügamer, Stefano Ansoldi, Juan Abel Barrio, M. I. Martínez, Riccardo Paoletti, Felix Spanier, T. Sakamoto, M. Garczarczyk, E. Lorenz, Hajime Takami, A. La Barbera, L. A. Antonelli, Francesco Dazzi, Sabrina Einecke, P. Antoranz, R. Reinthal, J. Rodriguez Garcia, Dominik Elsaesser, Giacomo Bonnoli, X. Paredes-Fortuny, U. Barres de Almeida, I. Lozano, Fabrizio Tavecchio, Damir Lelas, Ll. Font, Masahiro Teshima, Victor Stamatescu, S. Bonnefoy, R. D. Schwartz, Filippo D'Ammando, Dorota Sobczyńska, R. Mirzoyan, D. Eisenacher, Abelardo Moralejo, P. Temnikov, Fabio Zandanel, Shan Sun, E. Carmona, T. Steinbring, Julian Sitarek, J. Hose, Aaron Dominguez, E. Prandini, Daniela Hadasch, T. Toyama, Aldo Treves, W. Idec, Thomas Bretz, S. N. Shore, Walter Max-Moerbeck, Wolfgang Rhode, K. Frantzen, Ivica Puljak, Tihomir Surić, Pierre Colin, D. Carreto Fidalgo, T. Schweizer, C. Delgado Mendez, S. R. Gozzini, F. Borracci, V. Kadenius, S. Paiano, Karl Mannheim, J. Becerra González, Mario Meucci, F. Verrecchia, E. Colombo, Nijil Mankuzhiyil, P. Munar-Adrover, G. Maneva, Silvia Preziuso, L. O. Takalo, R. Zanin, A. Saggion, Adrian Biland, A. González Muñoz, Mosè Mariotti, A.-K. Overkemping, J. Rico, A. Sillanpää, Daniela Dorner, Takashi Saito, Saverio Lombardi, M. Gaug, Reiko Orito, J. Herrera, Koji Noda, Elisa Bernardini, Christian Fruck, K. Saito, D. Hildebrand, Daniel Ferenc, G. De Caneva, S. Partini, Marcel Strzys, L. C. Reyes, Martin Makariev, Oscar Blanch, M. Doert, Dario Hrupec, M. A. Lopez, Aleksic J, Ansoldi S, Antonelli LA, Antoranz P, Babic A, Bangale P, de Almeida UB, Barrio JA, Gonzalez JB, Bednarek W, Bernardini E, Biland A, Blanch O, Bonnefoy S, Bonnoli G, Borracci F, Bretz T, Carmona E, Carosi A, Fidalgo DC, Colin P, Colombo E, Contreras JL, Cortina J, Covino S, Da Vela P, Dazzi F, De Angelis A, De Caneva G, De Lotto B, Mendez CD, Doert M, Dominguez A, Prester DD, Dorner D, Doro M, Einecke S, Eisenacher D, Elsaesser D, Farina E, Ferenc D, Fonseca MV, Font L, Frantzen K, Fruck C, Lopez RJG, Garczarczyk M, Terrats DG, Gaug M, Godinovic N, Munoz AG, Gozzini SR, Hadasch D, Hayashida M, Herrera J, Herrero A, Hildebrand D, Hose J, Hrupec D, Idec W, Kadenius V, Kellermann H, Kodani K, Konno Y, Krause J, Kubo H, Kushida J, La Barbera A, Lelas D, Lewandowska N, Lindfors E, Lombardi S, Lopez M, Lopez-Coto R, Lopez-Oramas A, Lorenz E, Lozano I, Makariev M, Mallot K, Maneva G, Mankuzhiyil N, Mannheim K, Maraschi L, Marcote B, Mariotti M, Martinez M, Mazin D, Menzel U, Meucci M, Miranda JM, Mirzoyan R, Moralejo A, Munar-Adrover P, Nakajima D, Niedzwiecki A, Nilsson K, Nishijima K, Noda K, Nowak N, Orito R, Overkemping A, Paiano S, Palatiello M, Paneque D, Paoletti R, Paredes JM, Paredes-Fortuny X, Partini S, Persic M, Prada F, Moroni PGP, Prandini E, Preziuso S, Puljak I, Reinthal R, Rhode W, Riboo M, Rico J, Garcia JR, Rugamer S, Saggion A, Saito T, Saito K, Satalecka K, Scalzotto V, Scapin V, Schultz C, Schweizer T, Shore SN, Sillanpaa A, Sitarek J, Snidaric I, Sobczynska D, Spanier F, Stamatescu V, Stamerra A, Steinbring T, Storz J, Strzys M, Sun S, Suric T, Takalo L, Takami H, Tavecchio F, Temnikov P, Terzic T, Tescaro D, Teshima M, Thaele J, Tibolla O, Torres DF, Toyama T, Treves A, Uellenbeck M, Vogler P, Wagner RM, Zandanel F, Zanin R, DAmmando F, Hovatta T, Larionov VM, Max-Moerbeck W, Perri M, Readhead ACS, Richards JL, Sakamoto T, Schwartz RD, Verrecchia F, and Reyes LC
Subjects: ACTIVE GALACTIC NUCLEI, BL Lacertae objects: individual: MAGIC J2001+439, Galaxies: active, BL Lac objects: individual (MAGIC J2001+435), gamma rays: observations, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, LARGE-AREA TELESCOPE, Nordic Optical Telescope, Spectral line, BL Lacertae objects: individual: MAGIC J2001+435, Gamma rays: galaxies, 0103 physical sciences, GAMMA-RAY SPECTRUM, MAGIC (telescope), 010306 general physics, Blazar, 010303 astronomy & astrophysics, Physics, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), galaxies: active – BL Lacertae objects: individual: MAGIC J2001+435 – BL Lacertae objects: individual: MAGIC J2001+439 – gamma rays: galaxies, FERMI ERA, Astronomy and Astrophysics, PKS 1424+240, BL-LACERTAE OBJECTS, Galaxy, Redshift, EXTRAGALACTIC BACKGROUND LIGHT, LAC OBJECTS, SKY SURVEY, RADIATION, Amplitude, Space and Planetary Science, ddc:520, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, BL Lac object
Abstract: We aim to characterize the broadband emission from 2FGL J2001.1+4352, which has been associated with the unknown-redshift blazar MG4 J200112+4352. Based on its gamma-ray spectral properties, it was identified as a potential very high energy (VHE; E > 100 GeV) gamma-ray emitter. The source was observed with MAGIC first in 2009 and later in 2010 within a multi-instrument observation campaign. The MAGIC observations yielded 14.8 hours of good quality stereoscopic data. The object was monitored at radio, optical and gamma-ray energies during the years 2010 and 2011. The source, named MAGIC J2001+439, is detected for the first time at VHE with MAGIC at a statistical significance of 6.3 {\sigma} (E > 70 GeV) during a 1.3-hour long observation on 2010 July 16. The multi-instrument observations show variability in all energy bands with the highest amplitude of variability in the X-ray and VHE bands. We also organized deep imaging optical observations with the Nordic Optical Telescope in 2013 to determine the source redshift. We determine for the first time the redshift of this BL Lac object through the measurement of its host galaxy during low blazar activity. Using the observational evidence that the luminosities of BL Lac host galaxies are confined to a relatively narrow range, we obtain z = 0.18 +/- 0.04. Additionally, we use the Fermi-LAT and MAGIC gamma-ray spectra to provide an independent redshift estimation, z = 0.17 +/- 0.10. Using the former (more accurate) redshift value, we adequately describe the broadband emission with a one-zone SSC model for different activity states and interpret the few-day timescale variability as produced by changes in the high-energy component of the electron energy distribution., Comment: 17 pages, 15 figures, Accepted for publication in A&A
Published: 2014
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6. Discovery of very high energy gamma-ray emission from the blazar 1ES 0033+595 by the MAGIC telescopes

Author: T. Steinbring, A. González Muñoz, Natalia Lewandowska, D. Hildebrand, A. La Barbera, Daniela Dorner, X. Paredes-Fortuny, A. De Angelis, F. Borracci, M. Uellenbeck, Konstancja Satalecka, Michele Doro, S. Partini, S. Buson, Aaron Dominguez, Dario Hrupec, M. A. Lopez, K. Saito, U. Menzel, M. Gaug, J. Becerra González, Mario Meucci, Jelena Aleksić, R. López-Coto, Julian Sitarek, J. Hose, Daniela Hadasch, K. Nishijima, Takashi Saito, A. Niedzwiecki, J. Herrera, T. Toyama, Koji Noda, Giacomo Bonnoli, D. Dominis Prester, Reiko Orito, Diego F. Torres, Thomas Bretz, K. Frantzen, David Paneque, Elisa Bernardini, S. N. Shore, D. Nakajima, G. Maneva, Nikola Godinovic, Benito Marcote, R. Zanin, A. Saggion, P. G. Prada Moroni, M. Garczarczyk, Tihomir Surić, D. Carreto Fidalgo, Martin Makariev, M. I. Martínez, A. Borghese, E. Prandini, Oscar Blanch, O. Tibolla, V. Kadenius, P. Temnikov, Adrian Biland, Francisco Prada, S. Paiano, Lluis Font, Karl Mannheim, M. Hayashida, Victor Stamatescu, J. Krause, A. Herrero, B. De Lotto, J. Rico, Alicia López-Oramas, Stefano Covino, A. Sillanpää, K. Berger, M. Doert, C. Delgado Mendez, V. Tronconi, Hajime Takami, I. Lozano, Nijil Mankuzhiyil, G. De Caneva, S. Bonnefoy, Wolfgang Rhode, Aldo Treves, Sabrina Einecke, S. R. Gozzini, Robert Wagner, J. Rodriguez Garcia, Felix Spanier, W. Idec, P. Munar-Adrover, M. Palatiello, Francesco Dazzi, Masahiro Teshima, S. Sun, Christian Fruck, Daniel Ferenc, D. Tescaro, Yusuke Konno, Silvia Preziuso, Mosè Mariotti, A.-K. Overkemping, P. Da Vela, C. Schultz, V. Scapin, Ivica Puljak, Pierre Colin, Saverio Lombardi, Wlodek Bednarek, Alessandro Carosi, L. Maraschi, Elina Lindfors, E. Colombo, Julia Thaele, Daniel Mazin, Fabio Zandanel, Marc Ribó, L. O. Takalo, P. Bangale, Jose Miguel Miranda, R. Reinthal, Dominik Elsaesser, Hidetoshi Kubo, U. Barres de Almeida, Damir Lelas, R. Mirzoyan, M. V. Fonseca, P. Antoranz, Dorota Sobczyńska, D. Eisenacher, L. A. Antonelli, J. A. Barrio, E. Carmona, Fabrizio Tavecchio, Emanuele Paolo Farina, Nina Nowak, T. Schweizer, S. Rügamer, Tomislav Terzić, Patrick Vogler, I. Snidaric, Hanna Kellermann, K. Mallot, R. J. García López, E. Lorenz, Massimo Persic, J. M. Paredes, Antonio Stamerra, K. Kodani, J. Storz, Stefano Ansoldi, Riccardo Paoletti, J. Kushida, Jose Luis Contreras, Juan Cortina, D. Garrido Terrats, V. Scalzotto, Ana Babić, Kari Nilsson, and Abelardo Moralejo
Subjects: BL Lacertae objects: individual: (1ES 0033+595), Gamma-rays: galaxies, Astronomy and Astrophysics, Space and Planetary Science, Cosmology and Nongalactic Astrophysics (astro-ph.CO), astro-ph.HE, astro-ph.CO, astro-ph.GA, Astrophysics::High Energy Astrophysical Phenomena, Population, FOS: Physical sciences, individual: (1ES 0033 595), gamma-rays: galaxies [BL Lacertae objects], Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, BL Lacertae objects: individual: (1ES 0033 595), 01 natural sciences, Luminosity, 0103 physical sciences, MAGIC (telescope), education, Blazar, 010303 astronomy & astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), education.field_of_study, ta115, 010308 nuclear & particles physics, galaxies: BL Lacertae objects: individual (1ES 0033+595), gamma rays: galaxies, Compton scattering, Astronomy, Astrophysics - Astrophysics of Galaxies, Extragalactic background light, Astrophysics of Galaxies (astro-ph.GA), ddc:520, Spectral energy distribution, Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Monthly Notices of the Royal Astronomical Society, 446 (1), ISSN:0035-8711, ISSN:1365-2966, ISSN:1365-8711
Published: 2014
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7. MAGIC search for vhe γ-ray emission from ae aquarii in a multiwavelength context

Author: D. Nakajima, P. G. Prada Moroni, Laura Maraschi, Yusuke Konno, A. López-Oramas, Alessandro Carosi, Ruben Lopez-Coto, Victor Stamatescu, B. Biasuzzi, Konstancja Satalecka, Michele Doro, D. Dorner, I. Snidaric, Jose Miguel Miranda, M. Bogosavljevic, E. Lorenz, Fabrizio Tavecchio, Hajime Takami, Z. Ioannou, Tomislav Terzić, Ll. Font, A.-K. Overkemping, Elina Lindfors, M. López, Julia Thaele, E. Carmona, Daniel Mazin, A. Treves, K. Nishijima, M. V. Fonseca, Abelardo Moralejo, Patrick Vogler, M. Mariotti, Thomas Bretz, S. Rügamer, Julian Sitarek, Saverio Lombardi, T. Steinbring, Louis Antonelli, Morihiro Hayashida, P. Da Vela, Pierre Colin, K. Nilsson, J. Kushida, D. Hadasch, Dorothee Hildebrand, P. Antoranz, Robert Wagner, G. De Caneva, J. Becerra González, S. Bonnefoy, C. Schultz, X. Paredes-Fortuny, T. Toyama, Dario Hrupec, R. Paoletti, P. Munar-Adrover, Razmik Mirzoyan, M. Palatiello, I. Lozano, M. Strzys, Jose Luis Contreras, Jelena Aleksić, Silvia Preziuso, Damir Lelas, D. Galindo, D. Dominis Prester, R. Zanin, A. Niedzwiecki, A. Saggion, A. De Angelis, A. Sillanpää, Stefano Covino, Dorota Sobczyńska, V. Scapin, Juan Cortina, K. Frantzen, David Paneque, A. Biland, Diego F. Torres, Masahiro Teshima, Christopher W. Mauche, Takashi Saito, E. de Ona Wilhelmi, Y. Hanabata, D. Tescaro, W. Idec, J. M. Paredes, Nikola Godinovic, Benito Marcote, D. Garrido Terrats, R. Reinthal, M. Uellenbeck, Natalia Lewandowska, Reiko Orito, Francesco Dazzi, V. Scalzotto, A. La Barbera, T. Schweizer, Ana Babić, E. V. Palaiologou, Leo O. Takalo, R. J. García López, Antonio Stamerra, Oscar Blanch, Petar Temnikov, Koji Noda, J. Herrera, Elisa Bernardini, H. Kellermann, G. Bonnoli, N. Mankuzhiyil, W. Rhode, Felix Spanier, K. Kodani, C. Delgado Mendez, O. Tibolla, G. Maneva, A. González Muñoz, Christian Fruck, J. Storz, Juan Abel Barrio, I. Puljak, Stefano Ansoldi, D. Eisenacher, Markus Gaug, Markus Garczarczyk, Nina Nowak, D. Elsaesser, J. Hose, B. De Lotto, Elisa Prandini, M. Makariev, W. Bednarek, J. Rico, S. Paiano, U. Menzel, Miguel A. Pérez-Torres, M. I. Martínez, E. Colombo, P. Bangale, V. Kadenius, M. Doert, Sabrina Einecke, S. R. Gozzini, J. Rodriguez Garcia, K. Saito, Marc Ribó, Hidetoshi Kubo, F. Borracci, K. Mallot, T. Tuominen, Massimo Persic, K. Mannheim, J. Krause, and Universitat de Barcelona
Subjects: accretion: accretion disks, Radiation mechanisms: non-thermal, Novae: cataclysmic variables, Gamma rays: stars, Astrofísica, Accretion, Photon, Astrophysics::High Energy Astrophysical Phenomena, Signal region, Cataclysmic variable star, Astrophysics, Noves (Estels), Raigs gamma, Coincident, Accretion, accretion disks, Novae, cataclysmic variables, Astronomy and Astrophysics, Space and Planetary Science, New stars, Novae, Astrophysics::Galaxy Astrophysics, Physics, astro-ph.HE, cataclysmic variables, Spectral index, accretion disks, Gamma rays, Gamma ray, Stars, Estels, Wavelength, 13. Climate action, ddc:520, Electrónica, Física nuclear, Rayleigh test, Electricidad, Astrophysics - High Energy Astrophysical Phenomena
Abstract: It has been claimed that the nova-like cataclysmic variable (CV) AE Aquarii (AE Aqr) is a very-high-energy (VHE, $E>$100 GeV) source both on observational and theoretical grounds. We aim to search for VHE gamma-ray emission from AE Aqr during different states of the source at several wavelengths to confirm or rule out previous claims of detection of gamma-ray emission from this object. We report on observations of AE Aqr performed by MAGIC. The source was observed during 12 hours as part of a multiwavelength campaign carried out between May and June 2012 covering the optical, X-ray, and gamma-ray ranges. Besides MAGIC, the other facilities involved were the KVA, Skinakas, and Vidojevica telescopes in the optical and Swift in X-rays. We calculated integral upper limits coincident with different states of the source in the optical. We computed upper limits to the pulsed emission limiting the signal region to 30% of the phaseogram and we also searched for pulsed emission at different frequencies applying the Rayleigh test. AE Aqr was not detected at VHE energies during the multiwavelength campaign. We establish integral upper limits at the 95\% confidence level for the steady emission assuming the differential flux proportional to a power-law function d\phi/dE \propto E^{-Gamma}, with a Crab-like photon spectral index of Gamma=2.6. The upper limit above 200 GeV is 6.4\times10^{-12} cm^{-2}s^{-1} and above 1 TeV is 7.4\times10^{-13} cm^{-2}s^{-1}. We obtained an upper limit for the pulsed emission of 2.6\times10^{-12} cm^{-2}s^{-1} for energies above 200 GeV. Applying the Rayleigh test for pulsed emission at different frequencies we did not find any significant signal. Our results indicate that AE Aqr is not a VHE gamma-ray emitter at the level of emission previously claimed. We have established the most constraining upper limits for the VHE gamma-ray emission of AE Aqr., Comment: 9 pages, 5 figures. Accepted for publication in A&A
Published: 2014
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8. The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II)\\ II. Construction and Properties of the Survey

Author: Chris A. Collins, Hans Böhringer, Sergei Bobrovskyi, Gayoung Chon, Nina Nowak, and Luigi Guzzo
Subjects: Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Cosmology: observations, Flux, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxies: clusters: Intergalactic medium, Astrophysics - Astrophysics of Galaxies, Cosmology, Redshift, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), X-rays: galaxies: clusters, ROSAT, Reflex, Cluster sampling, Limit (mathematics), Galaxy cluster, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Galaxy clusters provide unique laboratories to study astrophysical processes on large scales and are important probes for cosmology. X-ray observations are currently the best means of detecting and characterizing galaxy clusters. In this paper we describe the construction of the REFLEX II galaxy cluster survey based on the southern part of the ROSAT All-Sky Survey. REFLEX II extends the REFLEX I survey by a factor of about two down to a flux limit of $1.8 \times 10^{-12}$ erg s$^{-1}$ cm$^{-2}$ (0.1 - 2.4 keV). We describe the determination of the X-ray parameters, the process of X-ray source identification, and the construction of the survey selection function. The REFLEX II cluster sample comprises currently 915 objects. A standard selection function is derived for a lower source count limit of 20 photons in addition to the flux limit. The median redshift of the sample is $z = 0.102$. Internal consistency checks and the comparison to several other galaxy cluster surveys imply that REFLEX II is better than 90\% complete with a contamination less than 10\%., Astronomy and Astrophysics Vol. 555, A30 - 15 pages, 20 figures
Published: 2014

9. Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes

Author: Nina Nowak, Abelardo Moralejo, D. Häfner, L. A. Antonelli, W. Idec, J. Masbou, M. I. Martínez, J. M. Paredes, Antonio Stamerra, M. Salvati, Dario Hrupec, Thomas Bretz, V. Kadenius, S. Rügamer, Mosè Mariotti, Marc Ribó, M. A. Lopez, Fabrizio Tavecchio, S. N. Shore, Juan Abel Barrio, D. Borla Tridon, Dominik Elsaesser, U. Barres de Almeida, S. Bonnefoy, K. Berger, Ll. Font, A. Hadamek, M. Doert, Emanuele Paolo Farina, Aaron Dominguez, J. Storz, G. De Caneva, Damir Lelas, R. Mirzoyan, Michael Backes, A. De Angelis, Christian Fruck, D. Eisenacher, J. Becerra González, Saverio Lombardi, T. Krähenbühl, M. L. Knoetig, Ignasi Reichardt, P. G. Prada Moroni, E. Carmona, I. Snidaric, Markus Garczarczyk, Nijil Mankuzhiyil, P. Munar-Adrover, Wolfgang Rhode, O. Tibolla, Dorota Sobczyńska, Kari Nilsson, M. V. Fonseca, Mario Meucci, Felix Spanier, M. Palatiello, E. Colombo, G. Maneva, Daniel Ferenc, A. Boller, L. Cossio, R. Zanin, A. Saggion, Ralph Bock, Nikola Godinovic, Benito Marcote, K. Mallot, R. J. García López, S. Spiro, E. Lorenz, Adrian Biland, Francesco Dazzi, L. O. Takalo, B. Steinke, Riccardo Paoletti, S. Partini, D. Dominis Prester, Artemio Herrero, J. Rico, K. Saito, J. Kushida, Jose Luis Contreras, Tomislav Terzić, J. Moldón, Francisco Prada, Juan Cortina, Hajime Takami, Ivica Puljak, Massimo Persic, Pierre Colin, R. Reinthal, Giacomo Bonnoli, Patrick Vogler, J. Krause, B. De Lotto, Martin Makariev, M. Asensio, Oscar Blanch, D. Garrido Terrats, A. Sillanpää, V. Scalzotto, Takashi Saito, Q. Weitzel, Tihomir Surić, Reiko Orito, C. Schultz, V. Scapin, D. Carreto Fidalgo, E. Prandini, Aldo Treves, S. Klepser, S. Paiano, C. Delgado Mendez, S. R. Gozzini, Karl Mannheim, Gianluca Giavitto, A. González Muñoz, Daniela Dorner, M. Gaug, Diego F. Torres, Elisa Bernardini, Natalia Lewandowska, F. Jankowski, F. Borracci, A. La Barbera, A. López-Oramas, Wlodek Bednarek, Alessandro Carosi, Ruben Lopez-Coto, D. Nakajima, Jose Miguel Miranda, P. Antoranz, L. Maraschi, M. Uellenbeck, Elina Lindfors, Konstancja Satalecka, Daniel Mazin, Michele Doro, P. Temnikov, Fabio Zandanel, Shan Sun, Jelena Aleksić, I. Lozano, D. Hadasch, Masahiro Teshima, A. Niedzwiecki, T. Schweizer, Stefano Covino, David Paneque, D. Tescaro, Robert Wagner, Victor Stamatescu, Julian Sitarek, J. Hose, T. Toyama, P. Da Vela, and Universitat de Barcelona
Subjects: Astrofísica, Swift Gamma-Ray Burst Mission, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, law.invention, Telescope, Raigs gamma, law, 0103 physical sciences, MAGIC (telescope), Nucli galàctic actiu, Blazar, 010303 astronomy & astrophysics, BL Lac objects: individual(1ES 1727+502), galaxies: active, gamma rays, Astrophysics::Galaxy Astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Active galactic nuclei, Telescopis, 010308 nuclear & particles physics, Gamma rays, Gamma ray, Astronomy and Astrophysics, Galaxies: active, Space and Planetary Science, Galaxies, Galàxies, Crab Nebula, 13. Climate action, ddc:520, Spectral energy distribution, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, BL Lac object, Telescopes
Abstract: Motivated by the Costamante & Ghisellini (2002) predictions we investigated if the blazar 1ES 1727+502 (z=0.055) is emitting very high energy (VHE, E>100 GeV) gamma rays. We observed the BL Lac object 1ES 1727+502 in stereoscopic mode with the two MAGIC telescopes during 14 nights between May 6th and June 10th 2011, for a total effective observing time of 12.6 hours. For the study of the multiwavelength spectral energy distribution (SED) we use simultaneous optical R-band data from the KVA telescope, archival UV/optical and X-ray observations by instruments UVOT and XRT on board of the Swift satellite and high energy (HE, 0.1 GeV - 100 GeV) gamma-ray data from the Fermi-LAT instrument. We detect, for the first time, VHE gamma-ray emission from 1ES 1727+502 at a statistical significance of 5.5 sigma. The integral flux above 150 GeV is estimated to be (2.1\pm0.4)% of the Crab Nebula flux and the de-absorbed VHE spectrum has a photon index of (2.7\pm0.5). No significant short-term variability was found in any of the wavebands presented here. We model the SED using a one-zone synchrotron self-Compton model obtaining parameters typical for this class of sources., 7 pages, 5 figures, 2 tables, submitted to A&A
Published: 2014
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10. Optimized dark matter searches in deep observations of Segue 1 with MAGIC

Author: M. V. Fonseca, L. Maraschi, M. Palatiello, Daniel Ferenc, Antonio Stamerra, Christian Fruck, Juan Abel Barrio, I. Puljak, J. Kushida, K. Kodani, Mosè Mariotti, Abelardo Moralejo, A.-K. Overkemping, Stefano Covino, Jose Luis Contreras, Oscar Blanch, Tomislav Terzić, Francesco Dazzi, Daniela Dorner, Juan Cortina, T. Steinbring, J. Storz, R. J. García López, Fabio Zandanel, G. Bonnoli, Shan Sun, Nikola Godinovic, Benito Marcote, R. Zanin, P. Da Vela, Robert Wagner, D. Hadasch, A. Saggion, Tihomir Surić, D. Carreto Fidalgo, Jelena Aleksić, D. Tescaro, A. Niedzwiecki, Adrian Biland, David Paneque, B. De Lotto, Saverio Lombardi, D. Garrido Terrats, K. Frantzen, Nijil Mankuzhiyil, X. Paredes-Fortuny, D. Dominis Prester, Damir Lelas, D. Nakajima, Louis Antonelli, Elina Lindfors, Karl Mannheim, P. Munar-Adrover, P. G. Prada Moroni, Daniel Mazin, A. De Angelis, V. Scalzotto, Stefano Ansoldi, Konstancja Satalecka, Silvia Preziuso, Riccardo Paoletti, Markus Gaug, S. Rügamer, Michele Doro, C. Schultz, V. Scapin, Dario Hrupec, Aaron Dominguez, Marc Ribó, A. López-Oramas, M. Uellenbeck, Dorothee Hildebrand, Ana Babić, G. De Caneva, R. Reinthal, Alessandro Carosi, P. Antoranz, Hidetoshi Kubo, S. Bonnefoy, Ruben Lopez-Coto, J. Becerra González, Petar Temnikov, J. M. Paredes, J. Hose, Diego F. Torres, Jose Miguel Miranda, Kari Nilsson, M. López, Dorota Sobczyńska, Elisa Bernardini, D. Elsaesser, T. Schweizer, H. Kellermann, Yusuke Konno, O. Tibolla, U. Barres de Almeida, Mario Meucci, K. Berger, I. Lozano, M. Salvati, F. Borracci, W. Idec, R. K. Bock, Emanuele Paolo Farina, A. Sillanpää, M. Doert, Takashi Saito, Masahiro Teshima, Alejandro Ibarra, E. Colombo, Hajime Takami, Reiko Orito, G. Maneva, C. Delgado Mendez, Felix Spanier, Natalia Lewandowska, K. Saito, Julian Sitarek, Pierre Colin, Julia Thaele, Aldo Treves, L. O. Takalo, A. La Barbera, E. Carmona, M. I. Martínez, Kazuyoshi Nishijima, M. Hayashida, P. Bangale, Gianluca Giavitto, A. González Muñoz, V. Kadenius, Sabrina Einecke, S. R. Gozzini, Francisco Prada, J. Rodriguez Garcia, M. Makariev, J. Rico, Victor Stamatescu, U. Menzel, Simona Paiano, Thomas Bretz, R. Mirzoyan, Wolfgang Rhode, J. Krause, K. Mallot, Massimo Persic, Takeshi Toyama, I. Snidaric, D. Eisenacher, Markus Garczarczyk, Nina Nowak, E. Lorenz, W. Bednarek, Fabrizio Tavecchio, Ll. Font, Elisa Prandini, Patrick Vogler, A. Herrero, S. Partini, Universitat de Barcelona, and SCOAP
Subjects: Astrofísica, Particle physics, Electromagnetic spectrum, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, dark matter, indirect searches, gamma-ray experiments, Imaging Air Cherenkov Telescopes, dwarf spheroidal galaxies, Segue 1, Gamma ray experiments, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Gamma ray astronomy, Satellite galaxy, Astronomia de raigs gamma, ddc:530, 010306 general physics, Dwarf galaxies, Dwarf galaxy, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Annihilation, Telescopis, 010308 nuclear & particles physics, Bremsstrahlung, Astronomy and Astrophysics, Segue, Galaxies, dwarfs galaxies, Galàxies, High Energy Physics - Phenomenology, Dark matter experiments, Dark matter (Astronomy), dark matter experiments, gamma ray experiments, Monochromatic color, Matèria fosca (Astronomia), Astrophysics - High Energy Astrophysical Phenomena, Telescopes
Abstract: Aleksic, J. et al., We present the results of stereoscopic observations of the satellite galaxy Segue 1 with the MAGIC Telescopes, carried out between 2011 and 2013. With almost 160 hours of good-quality data, this is the deepest observational campaign on any dwarf galaxy performed so far in the very high energy range of the electromagnetic spectrum. We search this large data sample for signals of dark matter particles in the mass range between 100 GeV and 20 TeV. For this we use the full likelihood analysis method, which provides optimal sensitivity to characteristic gamma-ray spectral features, like those expected from dark matter annihilation or decay. In particular, we focus our search on gamma-rays produced from different final state Standard Model particles, annihilation with internal bremsstrahlung, monochromatic lines and box-shaped signals. Our results represent the most stringent constraints to the annihilation cross-section or decay lifetime obtained from observations of satellite galaxies, for masses above few hundred GeV. In particular, our strongest limit (95% confidence level) corresponds to a ~ 500 GeV dark matter particle annihilating into τ+τ−, and is of order langleσannvrangle simeq 1.2 × 10−24 cm3 s−1 — a factor ~ 40 above the langleσannvrangle simeq thermal value., The support of the German BMBF and MPG, the Italian INFN, the Swiss National Fund SNF, and the Spanish MICINN is gratefully acknowledged. This work was also supported by the CPAN CSD2007-00042 and MultiDark CSD2009-00064 projects of the Spanish Consolider- Ingenio 2010 programme, by grant 127740 of the Academy of Finland, by the DFG Cluster of Excellence “Origin and Structure of the Universe”, by the Croatian Science Foundation Project 09/176, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, and by the Polish MNiSzW grant 745/N-HESS-MAGIC/2010/0.
Published: 2014
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11. MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context

Author: Aaron Dominguez, Mosè Mariotti, A.-K. Overkemping, P. G. Prada Moroni, C. Schultz, V. Scapin, Anthony C. S. Readhead, A. González Muñoz, Hajime Takami, O. Tibolla, A. De Angelis, A. Treves, Saverio Lombardi, Daniela Dorner, Daniel Ferenc, S. Rügamer, Juan Abel Barrio, M. Gaug, J. Herrera, Koji Noda, Hanna Kellermann, Elisa Bernardini, G. Maneva, R. Zanin, A. Saggion, S. Partini, Antonio Stamerra, S. N. Shore, K. Kodani, Adrian Biland, Victor Stamatescu, C. Delgado Mendez, J. Rico, P. Temnikov, Stefano Covino, J. Storz, Nina Nowak, Fabio Zandanel, Nikola Godinovic, Benito Marcote, S. Sun, Jari Kotilainen, Julian Sitarek, S. Bonnefoy, D. Tescaro, C. Fruck, T. Toyama, M. Palatiello, Dario Gasparrini, D. Eisenacher, T. Schweizer, Stefano Ansoldi, M. Uellenbeck, Francesco Dazzi, Riccardo Paoletti, E. Carmona, Markus Garczarczyk, A. K. Furniss, Oscar Blanch, J. L. Richards, Elina Lindfors, K. Mallot, Daniel Mazin, R. J. García López, Matthew L. Lister, Konstancja Satalecka, E. Prandini, Michele Doro, Talvikki Hovatta, G. De Caneva, G. Bonnoli, M. Doert, Massimo Persic, P. Da Vela, Ivica Puljak, Pierre Colin, M. Makariev, D. Nakajima, Robert Wagner, R. Reinthal, Razmik Mirzoyan, U. Barres de Almeida, U. Menzel, Jelena Aleksić, Damir Lelas, I. Lozano, D. Hildebrand, W. Idec, M. V. Fonseca, A. Niedzwiecki, Vasiliki Pavlidou, Dorota Sobczyńska, David Paneque, Anne Lähteenmäki, A. Sillanpää, Masahiro Teshima, K. Nishijima, K. Saito, Tuomas Kangas, Takashi Saito, Dario Hrupec, D. Dominis Prester, D. Hadasch, M. I. Martínez, P. Bangale, Francisco Prada, Reiko Orito, Sabrina Einecke, S. R. Gozzini, J. Rodriguez Garcia, E. Colombo, Louis Antonelli, Felix Spanier, L. O. Takalo, Nijil Mankuzhiyil, X. Paredes-Fortuny, P. Munar-Adrover, Silvia Preziuso, M. A. Lopez, P. Antoranz, Natalia Lewandowska, A. La Barbera, Yusuke Konno, Julia Thaele, J. Becerra González, Mario Meucci, K. Frantzen, Tihomir Surić, D. Carreto Fidalgo, J. M. Paredes, V. Kadenius, S. Paiano, Karl Mannheim, M. Hayashida, Alicia López-Oramas, J. Krause, B. De Lotto, Marc Ribó, Diego F. Torres, Hidetoshi Kubo, Abelardo Moralejo, J. Hose, T. Steinbring, D. Elsaesser, A. Herrero, Emanuele Paolo Farina, S. Cutini, Kari Nilsson, Thomas Bretz, J. Kushida, Jose Luis Contreras, Juan Cortina, F. Borracci, D. Garrido Terrats, V. Scalzotto, Ana Babić, Walter Max-Moerbeck, Wolfgang Rhode, Alessandro Carosi, Ruben Lopez-Coto, Jose Miguel Miranda, W. Bednarek, Fabrizio Tavecchio, Ll. Font, I. Snidaric, E. Lorenz, Patrick Vogler, Erkki Kankare, L. Maraschi, Tomislav Terzić, Universitat de Barcelona, Metsähovi Radio Observatory, Department of Radio Science and Engineering, Aalto-yliopisto, Aalto University, and Anne Lähteenmäki Group
Subjects: Astrofísica, PARTICLE-ACCELERATION, Astrophysics, 7. Clean energy, LARGE-AREA TELESCOPE, Spectral line, Raigs gamma, Gamma rays: galaxies, Astronomy and Astrophysics, Space and Planetary Science, MAGIC (telescope), High Energy Astrophysical Phenomena (astro-ph.HE), Physics, astro-ph.HE, 213 Electronic, automation and communications engineering, electronics, BL-LACERTAE OBJECTS, EXTRAGALACTIC BACKGROUND LIGHT, GAMMA-RAY EMISSION, SPECTRAL ENERGY-DISTRIBUTION, ACTIVE GALACTIC NUCLEI, LAC OBJECTS, X-RAY, FERMI OBSERVATIONS, Gamma ray, Extragalactic background light, galaxies [gamma rays], astro-ph.CO, Spectral energy distribution, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics, 1171 Geosciences, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, education, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, gamma rays: observations, blazar, BL Lac: AGNs: individual (PKS 1424+240), 114 Physical sciences, Nucli galàctic actiu, Blazar, Active galactic nuclei, Telescopis, 221 Nanotechnology, Gamma rays, Light curve, Redshift, individual: PKS 1424+240 [BL Lacertae objects], 115 Astronomy and space science, 216 Materials engineering, ddc:520, Telescopes
Abstract: We present a study of the very high energy (VHE; E > 100 GeV) gamma-ray emission of the blazar PKS 1424+240 observed with the MAGIC telescopes. The primary aim of this paper is the multiwavelength spectral characterization and modeling of this blazar, which is made particularly interesting by the recent discovery of a lower limit of its redshift of z > 0.6 and makes it a promising candidate to be the most distant VHE source. The source has been observed with the MAGIC telescopes in VHE gamma rays for a total observation time of ~33.6 h from 2009 to 2011. The source was marginally detected in VHE gamma rays during 2009 and 2010, and later, the detection was confirmed during an optical outburst in 2011. The combined significance of the stacked sample is ~7.2 sigma. The differential spectra measured during the different campaigns can be described by steep power laws with the indices ranging from 3.5 +/- 1.2 to 5.0 +/- 1.7. The MAGIC spectra corrected for the absorption due to the extragalactic background light connect smoothly, within systematic errors, with the mean spectrum in 2009-2011 observed at lower energies by the Fermi-LAT. The absorption-corrected MAGIC spectrum is flat with no apparent turn down up to 400 GeV. The multiwavelength light curve shows increasing flux in radio and optical bands that could point to a common origin from the same region of the jet. The large separation between the two peaks of the constructed non-simultaneous spectral energy distribution also requires an extremely high Doppler factor if an one zone synchrotron self-Compton model is applied. We find that a two-component synchrotron self-Compton model describes the spectral energy distribution of the source well, if the source is located at z~0.6., 15 pages, 8 figures. A&A accepted for publication
Published: 2014
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12. Using 3D Spectroscopy to Probe the Orbital Structure of Composite Bulges

Author: John E. Beckman, Maximilian Fabricius, Peter Erwin, Ralf Bender, Juan Carlos Vega Beltran, S. P. Rusli, Nina Nowak, Roberto P. Saglia, and Jens Thomas
Subjects: Physics, Supermassive black hole, Spiral galaxy, Dynamical modeling, Structure (category theory), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Galaxy, Space and Planetary Science, Bulge, Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Earth and Planetary Astrophysics, Spectroscopy, Schwarzschild radius, Astrophysics::Galaxy Astrophysics
Abstract: Detailed imaging and spectroscopic analysis of the centers of nearby S0 and spiral galaxies shows the existence of "composite bulges", where both classical bulges and disky pseudobulges coexist in the same galaxy. As part of a search for supermassive black holes in nearby galaxy nuclei, we obtained VLT-SINFONI observations in adaptive-optics mode of several of these galaxies. Schwarzschild dynamical modeling enables us to disentangle the stellar orbital structure of the different central components, and to distinguish the differing contributions of kinematically hot (classical bulge) and kinematically cool (pseudobulge) components in the same galaxy., Comment: LaTeX, 2 pages, 1 PDF figure. To appear in "Proceedings of IAU Symposium 309: Galaxies in 3D across the Universe", eds. B. L. Ziegler, F. Combes, H. Dannerbauer, and M. Verdugo
Published: 2014
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13. Contemporaneous observations of the radio galaxy NGC 1275 from radio to very high energy gamma-rays

Author: M. Palatiello, A. La Barbera, R. Zanin, X. Paredes-Fortuny, A. Saggion, Adrian Biland, Francesco Dazzi, Abelardo Moralejo, K. Berger, M. Uellenbeck, D. Garrido Terrats, T. Schweizer, M. Salvati, A. Herrero, T. Steinbring, V. Scalzotto, J. Rico, C. Delgado Mendez, S. R. Gozzini, S. Rügamer, S. Bonnefoy, K. Frantzen, F. Borracci, Felix Spanier, Tihomir Surić, D. Carreto Fidalgo, P. Temnikov, P. Da Vela, D. Dominis Prester, D. Hildebrand, Nijil Mankuzhiyil, Dominik Elsaesser, R. Mirzoyan, Fabio Zandanel, U. Barres de Almeida, Shan Sun, P. Munar-Adrover, R. Reinthal, L. A. Antonelli, Silvia Preziuso, D. Eisenacher, W. Idec, Ana Babić, Daniela Dorner, Damir Lelas, S. Paiano, Francisco Prada, Karl Mannheim, E. Carmona, J. Kushida, K. Mallot, R. J. García López, Jose Luis Contreras, Julian Sitarek, M. Gaug, Stefano Covino, I. Lozano, E. Colombo, K. Saito, J. Hose, Dorota Sobczyńska, Juan Cortina, Daniela Hadasch, J. Krause, B. De Lotto, M. Doert, J. A. Barrio, A. De Angelis, A. López-Oramas, Thomas Bretz, Alessandro Carosi, Ralph Bock, Daniel Ferenc, Barbara Balmaverde, M. V. Fonseca, S. N. Shore, L. O. Takalo, D. Nakajima, T. Toyama, Masahiro Teshima, J. Becerra González, L. Font, Massimo Persic, Mosè Mariotti, A.-K. Overkemping, Ruben Lopez-Coto, Nikola Godinovic, A. Sillanpää, Benito Marcote, Elisa Bernardini, Fabrizio Tavecchio, Mario Meucci, Wolfgang Rhode, D. Tescaro, P. G. Prada Moroni, M. I. Martínez, G. Maneva, Hanna Kellermann, Giacomo Bonnoli, U. Menzel, Jose Miguel Miranda, I. Snidaric, Saverio Lombardi, Ivica Puljak, Pierre Colin, Diego F. Torres, V. Kadenius, O. Tibolla, R. Rekola, L. Maraschi, Sabrina Einecke, Kari Nilsson, Tomislav Terzić, Gianluca Giavitto, Reiko Orito, A. González Muñoz, M. Garczarczyk, Elina Lindfors, Daniel Mazin, J. Rodriguez Garcia, S. Partini, Nina Nowak, E. Lorenz, G. De Caneva, Martin Makariev, Oscar Blanch, Patrick Vogler, Aaron Dominguez, Christian Fruck, Dario Hrupec, W. Bednarek, M. A. Lopez, E. Prandini, Aldo Treves, C. Schultz, V. Scapin, P. Antoranz, M. L. Knoetig, Julia Thaele, Stefano Ansoldi, Riccardo Paoletti, J. M. Paredes, Jun Kataoka, Antonio Stamerra, A. Hadamek, Emanuele Paolo Farina, J. Storz, Robert Wagner, Y. Takahashi, Konstancja Satalecka, Michele Doro, Marc Ribó, Jelena Aleksić, P. Bangale, A. Niedzwiecki, David Paneque, Victor Stamatescu, Natalia Lewandowska, and Universitat de Barcelona
Subjects: Astrofísica, PARTICLE-ACCELERATION, Radio galaxy, Flux, Astrophysics, 01 natural sciences, Spectral line, LARGE-AREA TELESCOPE, MAGIC TELESCOPES, Raigs gamma, Jets (Astrofísica), Galaxies: active, Galaxies: individual: NGC 1275, Galaxies: jets, Gamma rays: galaxies, MAGIC (telescope), 010303 astronomy & astrophysics, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Line-of-sight, COSMIC-RAYS, galaxies: active, galaxies: jets, galaxies: individual (NGC1275/3C 84), gamma rays: galaxies, ACTIVE GALACTIC NUCLEI, PERSEUS CLUSTER, TEV EMISSION, 3C 84, CHANDRA VIEW, LAC OBJECTS, Spectral energy distribution, Electrónica, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Astronomy and Astrophysics, Space and Planetary Science, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 0103 physical sciences, 010308 nuclear & particles physics, Gamma rays, Física atmosférica, Light curve, Galaxies, Galaxy, Galàxies, Astrophysical jets, Galàxies actives, Active galaxies, ddc:520
Abstract: The radio galaxy NGC 1275, recently identified as a very high energy (VHE, >100 GeV) gamma-ray emitter by MAGIC, is one of the few non-blazar AGN detected in the VHE regime. In order to better understand the origin of the gamma-ray emission and locate it within the galaxy, we studied contemporaneous multi-frequency observations of NGC 1275 and modeled the overall spectral energy distribution (SED). We analyzed unpublished MAGIC observations carried out between Oct. 2009 and Feb. 2010, and the previously published ones taken between Aug. 2010 and Feb. 2011. We studied the multi-band variability and correlations by analyzing data of Fermi-LAT (0.1-100 GeV), as well as Chandra (X-ray), KVA (optical) and MOJAVE (radio) data taken during the same period. Using customized Monte Carlo simulations corresponding to early MAGIC stereo data, we detect NGC 1275 also in the earlier campaign. The flux level and energy spectra are similar to the results of the second campaign. The monthly light curve >100 GeV shows a hint of variability at the 3.6 sigma level. In the Fermi-LAT band, both flux and spectral shape variabilities are reported. The optical light curve is variable and shows a clear correlation with the gamma-ray flux >100 MeV. In radio, 3 compact components are resolved in the innermost part of the jet. One of them shows a similar trend as the LAT and KVA light curves. The 0.1-650 GeV spectra measured simultaneously with MAGIC and Fermi-LAT can be well fitted either by a log-parabola or by a power-law with a sub-exponential cutoff for both campaigns. A single-zone synchrotron-self-Compton model, with an electron spectrum following a power-law with an exponential cutoff, can explain the broadband SED and the multi-band behavior of the source. However, this model suggests an untypical low bulk-Lorentz factor or a velocity alignment closer to the line of sight than the pc-scale radio jet., 14 pages, 11 figures, accepted for publication in A&A
Published: 2014
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14. Very high energy gamma-ray observation of the peculiar transient event Swift J1644+57 with the MAGIC telescopes and AGILE

Author: Abelardo Moralejo, Ivica Puljak, Pierre Colin, T. Krähenbühl, L. A. Antonelli, K. Berger, E. Colombo, S. Bonnefoy, Giacomo Bonnoli, R. Mirzoyan, D. Eisenacher, E. Carmona, Markus Garczarczyk, Fabio Zandanel, Ralph Bock, L. O. Takalo, Nina Nowak, Natalia Lewandowska, Mosè Mariotti, M. Doert, Michael Backes, M. Asensio, Takashi Saito, Juan Abel Barrio, K. Mallot, Fabrizio Tavecchio, R. J. García López, Saverio Lombardi, D. Borla Tridon, Ll. Font, F. Jankowski, C. Schultz, V. Scapin, Reiko Orito, S. Partini, Francesco Longo, Julian Sitarek, Kari Nilsson, M. Salvati, R. Reinthal, J. Hose, Dominik Elsaesser, A. Sillanpää, Steven N. Shore, A. La Barbera, Emanuele Paolo Farina, U. Barres de Almeida, Dario Hrupec, Nikola Godinovic, Benito Marcote, Daniela Hadasch, Felix Spanier, P. G. Prada Moroni, J. Moldón, Christian Fruck, T. Toyama, Nijil Mankuzhiyil, W. Idec, Damir Lelas, Patrick Vogler, P. Munar-Adrover, D. Garrido Terrats, Ignasi Reichardt, O. Tibolla, V. Scalzotto, C. Pittori, M. L. Knoetig, Tomislav Terzić, M. Palatiello, Massimo Persic, J. Krause, Dorota Sobczyńska, B. De Lotto, M. A. Lopez, Hajime Takami, Martin Makariev, Oscar Blanch, Riccardo Paoletti, I. Snidaric, Marc Ribó, D. Dominis Prester, Aaron Dominguez, M. V. Fonseca, G. Maneva, Fabrizio Lucarelli, Francesco Dazzi, R. Zanin, A. Saggion, Adrian Biland, J. Kushida, G. De Caneva, S. Klepser, E. Prandini, Jose Luis Contreras, Francisco Prada, Juan Cortina, J. M. Paredes, Antonio Stamerra, S. Spiro, E. Lorenz, A. De Angelis, Victor Stamatescu, Aldo Treves, J. Rico, Thomas Bretz, B. Steinke, J. Masbou, A. Hadamek, J. Storz, Diego F. Torres, M. I. Martínez, Wolfgang Rhode, J. Becerra González, P. Da Vela, A. Boller, L. Cossio, Daniel Ferenc, Mario Meucci, Artemio Herrero, K. Saito, F. Verrecchia, Q. Weitzel, Tihomir Surić, D. Carreto Fidalgo, V. Kadenius, S. Paiano, Karl Mannheim, C. Delgado Mendez, S. R. Gozzini, Gianluca Giavitto, A. González Muñoz, Daniela Dorner, M. Gaug, Elisa Bernardini, A. López-Oramas, Wlodek Bednarek, Alessandro Carosi, Ruben Lopez-Coto, D. Nakajima, Jose Miguel Miranda, L. Maraschi, Elina Lindfors, Daniel Mazin, Konstancja Satalecka, P. Temnikov, Michele Doro, Shan Sun, Jelena Aleksić, A. Niedzwiecki, David Paneque, Stefano Covino, T. Schweizer, I. Lozano, D. Tescaro, Masahiro Teshima, Robert Wagner, M. Uellenbeck, P. Antoranz, UAM. Departamento de Física Teórica, J., Aleksić, L. A., Antonelli, P., Antoranz, M., Asensio, M., Backe, U., Barres de Almeida, J. A., Barrio, J., Becerra González, W., Bednarek, K., Berger, E., Bernardini, A., Biland, O., Blanch, R. K., Bock, A., Boller, S., Bonnefoy, G., Bonnoli, D., Borla Tridon, T., Bretz, E., Carmona, A., Carosi, D., Carreto Fidalgo, P., Colin, E., Colombo, J. L., Contrera, J., Cortina, L., Cossio, S., Covino, P., Da Vela, F., Dazzi, A., De Angeli, G., De Caneva, B., De Lotto, C., Delgado Mendez, M., Doert, A., Domínguez, D., Dominis Prester, D., Dorner, M., Doro, D., Eisenacher, D., Elsaesser, E., Farina, D., Ferenc, M. V., Fonseca, L., Font, C., Fruck, R. J., García López, M., Garczarczyk, D., Garrido Terrat, M., Gaug, G., Giavitto, N., Godinović, A., González Muñoz, S. R., Gozzini, A., Hadamek, D., Hadasch, A., Herrero, J., Hose, D., Hrupec, W., Idec, F., Jankowski, V., Kadeniu, S., Klepser, M. L., Knoetig, T., Krähenbühl, J., Krause, J., Kushida, A., La Barbera, D., Lela, N., Lewandowska, E., Lindfor, S., Lombardi, M., López, R., López Coto, A., López Orama, E., Lorenz, I., Lozano, M., Makariev, K., Mallot, G., Maneva, N., Mankuzhiyil, K., Mannheim, L., Maraschi, B., Marcote, M., Mariotti, M., Martínez, J., Masbou, D., Mazin, M., Meucci, J. M., Miranda, R., Mirzoyan, J., Moldón, A., Moralejo, P., Munar Adrover, D., Nakajima, A., Niedzwiecki, K., Nilsson, N., Nowak, R., Orito, S., Paiano, M., Palatiello, D., Paneque, R., Paoletti, J. M., Parede, S., Partini, M., Persic, F., Prada, P. G., Prada Moroni, E., Prandini, I., Puljak, I., Reichardt, R., Reinthal, W., Rhode, M., Ribó, J., Rico, A., Saggion, K., Saito, T. Y., Saito, M., Salvati, K., Satalecka, V., Scalzotto, V., Scapin, C., Schultz, T., Schweizer, S. N., Shore, A., Sillanpää, J., Sitarek, I., Snidaric, D., Sobczynska, F., Spanier, S., Spiro, V., Stamatescu, A., Stamerra, B., Steinke, J., Storz, S., Sun, T., Surić, L., Takalo, H., Takami, F., Tavecchio, P., Temnikov, T., Terzić, D., Tescaro, M., Teshima, O., Tibolla, D. F., Torre, T., Toyama, A., Treve, M., Uellenbeck, P., Vogler, R. M., Wagner, Q., Weitzel, F., Zandanel, R., Zanin, Longo, Francesco, F., Lucarelli, C., Pittori, and F., Verrecchia
Subjects: Swift Gamma-Ray Burst Mission, active [Galaxies], Radiation mechanisms: non-thermal, TIDAL DISRUPTION, Astrophysics::High Energy Astrophysical Phenomena, radiation mechanisms: non-thermal, galaxies: active, Gamma rays: general, general [Gamma rays], Astrophysics, 01 natural sciences, Tidal disruption event, NEARBY, 0103 physical sciences, Blazar, 010303 astronomy & astrophysics, Zenith, Physics, gamma rays: general, non-thermal [Radiation mechanisms], STAR, 010308 nuclear & particles physics, Gamma ray, Astronomy, Física, MASSIVE BLACK-HOLE, GALAXIES, BLAZARS, Astronomy and Astrophysics, Galaxies: active, Galaxy, 13. Climate action, Space and Planetary Science, ddc:520, Electrónica, Física nuclear, Electricidad, Gamma-ray burst, Fermi Gamma-ray Space Telescope
Abstract: Astronomy and astrophysics 552(A112 ), 1-6 (2013). doi:10.1051/0004-6361/201321197, Context. On March 28, 2011, the BAT instrument on board the Swift satellite detected a new transient event that in the very beginning was classified as a gamma ray burst (GRB). However, the unusual X-ray flaring activity observed from a few hours up to days after the onset of the event made a different nature seem to be more likely. The long-lasting activity in the X-ray band, followed by a delayed brightening of the source in infrared and radio activity, suggested that it is better interpreted as a tidal disruption event that triggered a dormant black hole in the nucleus of the host galaxy and generated an outflowing jet of relativistic matter. Aims. Detecting a very high energy emission component from such a peculiar object would be enable us to constrain the dynamic of the emission processes and the jet model by providing information on the Doppler factor of the relativistic ejecta. Methods. The MAGIC telescopes observed the peculiar source Swift J1644+57 during the flaring phase, searching for gamma-ray emission at very-high energy (VHE, E > 100 GeV), starting observations nearly 2.5 days after the trigger time. MAGIC collected a total of 28 h of dataduring 12 nights. The source was observed in wobble mode during dark time at a mean zenith angle of 35◦. Data were reduced using a new image-cleaning algorithm, the so-called sum-cleaning, which guarantees a better noise suppression and a lower energy threshold than the standard analysis procedure. Results. No clear evidence for emission above the energy threshold of 100 GeV was found. MAGIC observations permit one to constrain theemission from the source down to 100 GeV, which favors models that explain the observed lower energy variable emission. Data analysis of simultaneous observations from AGILE, Fermi and VERITAS also provide negative detection, which additionally constrain the self-Compton emission component., Published by EDP Sciences, Les Ulis
Published: 2013
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15. Introducing the CTA concept

Author: A. Mathieu, R. G. Wagner, K. Panagiotidis, S Rosier Lees, Julien Rousselle, M. Gómez Berisso, Michela Uslenghi, Stephen Maxfield, R. C. Shellard, Ivica Puljak, T. Le Flour, Thomas Schanz, Tobias C. Walther, Juanan Aguilar, Pierre Colin, M. Chikawa, N. Fouque, Mosè Mariotti, G. Fontaine, Merja Tornikoski, V. Diez-Blanco, Enrico Giro, A. Krepps, G. Koss, J. M. Martin, Sergio Billotta, E. de Oña Wilhelmi, Keitaro Takahashi, S. Buson, P. Brook, S. Steiner, M. Dyrda, Joseph Silk, Sera Markoff, P. Lubinski, U. Schwanke, Sauvik Bhattacharyya, J. Ripken, T. Haubold, C. Zurbach, H. Wetteskind, R. Hermel, J. Darling, J. Nicolau-Kukliński, Konstancja Satalecka, M. Videla, Stefan Funk, P. Conconi, S. Bajtlik, Lukasz Stawarz, J. M. Paredes, K. Reitberger, Stefan Wagner, Teresa Mineo, David Kieda, G. Pareschi, Shigeto Kabuki, Makoto Sawada, Antonio Stamerra, Rodolfo Canestrari, N. Baby, G. Crimi, P. Kostka, J. Grube, R. Zanin, I. K. Kominis, L. Mc Comb, R. Sternberger, M. Fesquet, M. Tokarz, David Fink, Daniela Dorner, N. Hamer Heras, A. Moralejo Olaizola, M. de Naurois, Diego F. Torres, Claes Fransson, K. Nishijima, Yutaka Fujita, L. Fresnillo, B. García, R. Kossakowski, A. Masserot, H. von Gunten, Alkiviadis F. Bais, Ciro Bigongiari, A. Saggion, G. Papyan, I. Mrusek, K. Farakos, J. Michałowski, A. Franckowiak, Fernando Martinez, M. Doert, R. Wawrzaszek, Michele Doro, L. Sapozhnikov, Claudia Lavalley, D. Thuermann, A.A. Zdziarski, Cristina Knapic, Karen Byrum, N. Neyroud, Petr Schovanek, W. Domainko, D. Kastana, E. Birsin, Adrian Biland, F. Sánchez, Alexandre Marcowith, M. Errando, R. L. C. Starling, J. Schultze, A. Weinstein, B. B. Singh, Yassir Moudden, Jelena Aleksić, C. L. Naumann, V. Waegebaert, M. Shayduk, U. F. Katz, Gianpiero Tagliaferri, M. Schroedter, A. Vollhardt, O. Reimann, Hideyuki Ohoka, Vincenzo Testa, C. Jablonski, Tsuguya Naito, J. Schäfer, Stavros Maltezos, A. Wierzcholska, P. Wawer, L. Nellen, F. Mirabel, Tatsuo Yoshida, P. H. Carton, Nina Nowak, L. Platos, Riccardo Rando, P. P. Krueger, R. Wischnewski, W. Romaszkan, E. Fede, Martino Marisaldi, Markus Gaug, Richard Willingale, J. H. Buckley, U. De AlmeidaBarres, J. Knapp, Saverio Lombardi, D. della Volpe, A. Herrero, A. Bottani, E. Delagnes, Martin J. Hardcastle, C. Morello, Anna Lipniacka, T. Greenshaw, M. Renaud, Giancarlo Cusumano, Jonathan Biteau, M. Sowiński, J. R. T. de Mello Neto, T. B. Humensky, Michael G. Richer, G. Parks, G. Grasseau, H. Baba, Gino Tosti, Damir Lelas, H. Krawzcynski, David Paneque, M. Barcelo, R. Dickherber, P. Ferrando, Shinji Hara, D. Florin, Hideaki Katagiri, T. Shibata, Fuyuki Tokanai, N. A. McCubbin, J. Gomez-Ortega, D. Nakajima, A. Liolios, P. Laporte, Orjan Dale, A. Sillanpää, Dainis Dravins, Timothée Grégoire, Nu. Komin, A. Mihailidis, L. Sidoli, Shiu-Hang Lee, A. W. Chen, J. M. Illa, A. Kuznetsov, P. Munar-Adrover, D. Dominis Prester, Marcos Daniel Actis, Abraham D. Falcone, L. Journet, D. Hadasch, N. Galante, A. 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B., Kieda, T., Kifune, T., Kihm, T., Kishimoto, K., Kitamoto, W., Kluzniak, C., Knapic, J. w., Knapp, J., Knoedlseder, F., Koeck, J., Kocot, K., Kodani, J. . ., H., K., Kohri, K., Kokkota, D., Kolitzu, N., Komin, I., Komini, Y., Konno, H., Koeppel, P., Korohoda, K., Kosack, G., Ko, R., Kossakowski, P., Kostka, R., Koul, G., Kowal, S., Koyama, J., Koziol, T., Kraehenbuehl, J., Krause, H., Krawzcynski, F., Krennrich, A., Krepp, A., Kretzschmann, R., Krobot, P., Krueger, H., Kubo, V. A., Kudryavtsev, J., Kushida, A., Kuznetsov, A. L., Barbera, N. L., Palombara, V. L., Parola, G. L., Rosa, K., Lacombe, G., Lamanna, J., Lande, D., Languignon, J., Lapington, P., Laporte, C., Lavalley, T. L., Flour, A. L., Padellec, S. . ., H., W. H., Lee, M. A., Leigui, D., Lela, D. J., Leopold, T., Lerch, L., Lessio, B., Lieunard, E., Lindfor, A., Liolio, A., Lipniacka, H., Lockart, T., Lohse, S., Lombardi, A., Lopatin, M., Lopez, R., Lopez Coto, A., Lopez Orama, A., Lorca, E., Lorenz, P., Lubinski, F., Lucarelli, H., Luedecke, J., Ludwin, P. L., Luque Escamilla, W., Lustermann, O., Luz, E., Lyard, M. C., Maccarone, T. J., Maccarone, G. M., Madejski, A., Madhavan, M., Mahabir, G., Maier, P., Majumdar, G., Malaguti, S., Maltezo, A., Manalaysay, A., Mancilla, D., Mandat, G., Maneva, A., Mangano, P., Manigot, K., Mannheim, I., Mantho, N., Marago, A., Marcowith, M., Mariotti, M., Marisaldi, S., Markoff, A., Marszalek, C., Marten, J., Marti, P., Martin, G., Martinez, F., Martinez, M., Martinez, A., Masserot, A., Mastichiadi, A., Mathieu, H., Matsumoto, F., Mattana, S., Mattiazzo, G., Maurin, S., Maxfield, J., Maya, D., Mazin, L. M., Comb, N., Mccubbin, I., Mchardy, R., Mckay, C., Medina, C., Melioli, D., Melkumyan, S., Mereghetti, P., Mertsch, M., Meucci, J., Michalowski, P., Micolon, A., Mihailidi, T., Mineo, M., Minuti, N., Mirabal, F., Mirabel, J. M., Miranda, R., Mirzoyan, T., Mizuno, B., Moal, R., Moderski, I., Mognet, E., Molinari, M., Molinaro, T., Montaruli, I., Monteiro, P., Moore, A. M., Olaizola, M., Mordalska, C., Morello, K., Mori, F., Mottez, Y., Moudden, E., Moulin, I., Mrusek, R., Mukherjee, P., Munar Adrover, H., Muraishi, K., Murase, A., Murphy, S., Nagataki, T., Naito, D., Nakajima, T., Nakamori, K., Nakayama, C., Naumann, D., Naumann, M., Naumann Godo, P., Nayman, D., Nedbal, D., Neise, L., Nellen, V., Neustroev, N., Neyroud, L., Nicastro, J., Nicolau Kuklinski, A., Niedzwiecki, J., Niemiec, D., Nieto, A., Nikolaidi, K., Nishijima, S., Nolan, R., Northrop, D., Nosek, N., Nowak, A., Nozato, P., O'Brien, Y., Ohira, M., Ohishi, S., Ohm, H., Ohoka, T., Okuda, A., Okumura, R. A., Ong, R., Orito, M., Orr, J., Osborne, M., Ostrowski, L. A., Otero, N., Otte, E., Ovcharov, I., Oya, A., Ozieblo, L., Padilla, S., Paiano, D., Paillot, A., Paizi, S., Palanque, M., Palatka, J., Pallota, K., Panagiotidi, D., Paneque, M., Panter, R., Paoletti, A., Papayanni, G., Papyan, J. M., Parede, G., Pareschi, G., Park, D., Parson, M. P., Arriba, M., Pech, G., Pedaletti, V., Pelassa, D., Pelat, M. D., C., M., Persic, P. . ., O., B., Peyaud, A., Pichel, S., Pita, F., Pizzolato, L., Plato, R., Platzer, L., Pogosyan, M., Pohl, G., Pojmanski, J. D., Ponz, W., Potter, J., Poutanen, E., Prandini, J., Prast, R., Preece, F., Profeti, H., Prokoph, M., Prouza, M., Proyetti, I., Puerto Gimenez, G., Puehlhofer, I., Puljak, M., Punch, R., Pyziol, E. J., Quel, J., Quinn, A., Quirrenbach, E., Racero, P. J., Rajda, P., Ramon, R., Rando, R. C., Rannot, M., Rataj, M., Raue, P., Reardon, O., Reimann, A., Reimer, O., Reimer, K., Reitberger, M., Renaud, S., Renner, B., Reville, W., Rhode, M., Ribo, M., Ribordy, M. G., Richer, J., Rico, J., Ridky, F., Rieger, P., Ringegni, J., Ripken, P. R., Ristori, A., Riviere, S., Rivoire, L., Rob, U., Roeser, R., Rohlf, G., Roja, P., Romano, W., Romaszkan, G. E., Romero, S., Rosen, S. R., Lee, D., Ro, G., Rouaix, J., Rousselle, S., Rousselle, A. C., Rovero, F., Roy, S., Royer, B., Rudak, C., Rulten, M., Rupinski, F., Russo, F., Ryde, B., Sacco, E. O., Saemann, A., Saggion, V., Safiakian, K., Saito, T., Saito, Y., Saito, N., Sakaki, R., Sakonaka, A., Salini, F., Sanchez, M., Sanchez Conde, A., Sandoval, H., Sandaker, E., Sant'Ambrogio, A., Santangelo, E. M., Santo, A., Sanuy, L., Sapozhnikov, S., Sarkar, N., Sartore, H., Sasaki, K., Satalecka, M., Sawada, V., Scalzotto, V., Scapin, M., Scarcioffolo, J., Schafer, T., Schanz, S., Schlenstedt, R., Schlickeiser, T., Schmidt, J., Schmoll, P., Schovanek, M., Schroedter, C., Schultz, J., Schultze, A., Schulz, K., Schure, T., Schwab, U., Schwanke, J., Schwarz, S., Schwarzburg, T., Schweizer, S., Schwemmer, A., Segreto, G. H., Sembroski, K., Seweryn, M., Sharma, M., Shayduk, R. C., Shellard, J., Shi, T., Shibata, A., Shibuya, E., Shum, L., Sidoli, M., Sidz, J., Sieiro, M., Sikora, J., Silk, A., Sillanpaa, B. B., Singh, J., Sitarek, C., Skole, R., Smareglia, A., Smith, D., Smith, J., Smith, N., Smith, D., Sobczynska, H., Sol, G., Sottile, M., Sowinski, F., Spanier, D., Spiga, S., Spyrou, V., Stamatescu, A., Stamerra, R., Starling, L., Stawarz, R., Steenkamp, C., Stegmann, S., Steiner, N., Stergioula, R., Sternberger, M., Sterzel, F., Stinzing, M., Stodulski, U., Straumann, E., Strazzeri, L., Stringhetti, A., Suarez, M., Suchenek, R., Sugawara, K. . ., H., S., Sun, A. D., Supanitsky, T., Suric, P., Sutcliffe, J., Syke, M., Szanecki, T., Szepieniec, A., Szostek, G., Tagliaferri, H., Tajima, H., Takahashi, K., Takahashi, L., Takalo, H., Takami, C., Talbot, J., Tammi, M., Tanaka, S., Tanaka, J., Tasan, M., Tavani, L. A., Tejedor, I., Telezhinsky, P., Temnikov, C., Tenzer, Y., Terada, R., Terrier, M., Teshima, V., Testa, D., Tezier, D., Thuermann, L., Tibaldo, O., Tibolla, A., Tiengo, M., Tluczykont, C. J., Todero, F., Tokanai, M., Tokarz, K., Toma, K., Torii, M., Tornikoski, D. F., Torre, M., Torre, G., Tosti, T., Totani, C., Toussenel, G., Tovmassian, P., Travnicek, M., Trifoglio, I., Troyano, K., Tsingano, H., Ueno, K., Umehara, S. S., Upadhya, T., Usher, M., Uslenghi, J. F., Valdes Galicia, P., Vallania, G., Vallejo, W. v., Driel, C. v., Eldik, J., Vandenbrouke, J., Vanderwalt, H., Vankov, G., Vasileiadi, V., Vassiliev, D., Veberic, I., Vega, S., Vercellone, S., Vergani, C., Veyssiere, J. P., Vialle, A., Viana, M., Videla, P., Vincent, S., Vincent, J., Vink, N., Vlahaki, L., Vlaho, P., Vogler, A., Vollhardt, H. . ., P., S., Vorobiov, C., Vuerli, V., Waegebaert, R., Wagner, R. G., Wagner, S., Wagner, S. P., Wakely, R., Walter, T., Walther, K., Warda, R., Warwick, P., Wawer, R., Wawrzaszek, N., Webb, P., Wegner, A., Weinstein, Q., Weitzel, R., Welsing, M., Werner, H., Wetteskind, R., White, A., Wierzcholska, S., Wiesand, M., Wilkinson, D. A., William, R., Willingale, K., Winiarski, R., Wischnewski, L., Wisniewski, M., Wood, A., Woernlein, Q., Xiong, K. K., Yadav, H., Yamamoto, T., Yamamoto, R., Yamazaki, S., Yanagita, J. M., Yebra, D., Yelo, A., Yoshida, T., Yoshida, T., Yoshikoshi, V., Zabalza, M., Zacharia, A., Zajczyk, R., Zanin, A., Zdziarski, A., Zech, A., Zhao, X., Zhou, K., Zietara, J., Ziolkowski, P., Ziolkowski, V., Zitelli, C., Zurbach, P., Zychowski, Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), 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), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), APC - Astrophysique des Hautes Energies (APC - AHE), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO), Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CTA, Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Laboratoire d'Annecy de Physique des Particules (LAPP), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), and High Energy Astrophys. & Astropart. Phys (API, FNWI)
Subjects: Next generation Cherenkov telescopes, Ciencias Físicas, 01 natural sciences, 7. Clean energy, TeV GAMMA-RAY ASTRONOMY, Observatory, Air showers, HESS, Cherenkov Telescopes, 010303 astronomy & astrophysics, MISSION, SUPERNOVA REMNANT W44, TELESCOPE, ASTRONOMY, EMISSION, Physics, ta213, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Settore FIS/01 - Fisica Sperimentale, Astrophysics::Instrumentation and Methods for Astrophysics, TeV gamma-ray astronomy, ddc:540, CIENCIAS NATURALES Y EXACTAS, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Air shower, AIR SHOWERS, Astrophysics::High Energy Astrophysical Phenomena, 0103 physical sciences, Preparatory phase, ta115, TeV gamma-ray astronomy Air showers Cherenkov Telescopes, 010308 nuclear & particles physics, business.industry, CHERENKOV TELESCOPES, Física, Astronomy, Institut für Physik und Astronomie, Astronomy and Astrophysics, ASTROFÍSICA, Cherenkov Telescope Array, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Astronomía, Design study, Telecommunications, business
Abstract: The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve the sensitivity by about an order of magnitude, to span about four decades of energy, from a few tens of GeV to above 100 TeV with enhanced angular and energy resolutions over existing VHE gamma-ray observatories. An international collaboration has formed with more than 1000 members from 27 countries in Europe, Asia, Africa and North and South America. In 2010 the CTA Consortium completed a Design Study and started a three-year Preparatory Phase which leads to production readiness of CTA in 2014. In this paper we introduce the science goals and the concept of CTA, and provide an overview of the project., La lista completa de autores puede consultarse en el documento o en la página web de la revista., Facultad de Ingeniería
Published: 2013
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16. Rapid and multi-band variability of the TeV-bright active nucleus of the galaxy IC 310

Author: Dario Hrupec, M. A. Lopez, I. Lozano, D. Dominis Prester, Takashi Saito, S. Rügamer, Juan Abel Barrio, R. Zanin, D. Borla Tridon, A. Saggion, Adrian Biland, J. Becerra González, Francisco Prada, Reiko Orito, M. Salvati, A. Sillanpää, J. Rico, I. Snidaric, Mario Meucci, Masahiro Teshima, Daniela Dorner, Stefano Covino, Christian Fruck, M. L. Knoetig, T. Krähenbühl, Nikola Godinovic, Benito Marcote, S. Wilbert, Kari Nilsson, Daniel Ferenc, Abelardo Moralejo, M. V. Fonseca, Tomislav Terzić, A. De Angelis, K. Berger, S. Spiro, E. Lorenz, D. Tescaro, Mosè Mariotti, A.-K. Overkemping, Nijil Mankuzhiyil, E. Prandini, P. Munar-Adrover, Silvia Preziuso, J. Moldón, A. Boller, L. Cossio, M. Gaug, Ignasi Reichardt, Giacomo Bonnoli, M. Palatiello, J. Kushida, Q. Weitzel, Tihomir Surić, Aldo Treves, Artemio Herrero, M. Doert, Jose Luis Contreras, D. Carreto Fidalgo, Juan Cortina, P. Temnikov, Marc Ribó, Patrick Vogler, K. Saito, B. Steinke, G. Maneva, Elisa Bernardini, Riccardo Paoletti, L. Font, V. Kadenius, Fabio Zandanel, Shan Sun, S. Paiano, L. Maraschi, Karl Mannheim, Felix Spanier, G. De Caneva, Ivica Puljak, Gianluca Giavitto, L. A. Antonelli, Elina Lindfors, Daniel Mazin, D. Garrido Terrats, Natalia Lewandowska, J. Masbou, Pierre Colin, Jörn Wilms, P. Fortin, Thomas Bretz, S. N. Shore, M. I. Martínez, Francesco Dazzi, A. González Muñoz, Saverio Lombardi, S. Bonnefoy, A. La Barbera, Konstancja Satalecka, J. M. Paredes, Antonio Stamerra, Hajime Takami, V. Scalzotto, Michele Doro, Diego F. Torres, Julia Thaele, M. Uellenbeck, Fabrizio Tavecchio, D. Häfner, R. Mirzoyan, R. Reinthal, Dominik Elsaesser, S. Partini, Wolfgang Rhode, D. Eisenacher, U. Barres de Almeida, Damir Lelas, J. Krause, Ana Babić, Emanuele Paolo Farina, B. De Lotto, Aaron Dominguez, C. Delgado Mendez, S. R. Gozzini, Dorota Sobczyńska, T. Dauser, A. Hadamek, Matthias Kadler, W. Idec, J. Storz, E. Carmona, Markus Garczarczyk, Martin Makariev, Nina Nowak, F. Krauß, E. Colombo, P. Antoranz, Oscar Blanch, P. G. Prada Moroni, Ralph Bock, L. O. Takalo, O. Tibolla, Robert Wagner, C. Schultz, V. Scapin, T. Schweizer, Jelena Aleksić, A. López-Oramas, Wlodek Bednarek, Alessandro Carosi, Ruben Lopez-Coto, D. Nakajima, A. Niedzwiecki, Jose Miguel Miranda, F. Borracci, David Paneque, K. Mallot, R. J. García López, Massimo Persic, Julian Sitarek, J. Hose, Daniela Hadasch, T. Toyama, P. Da Vela, Victor Stamatescu, Institut de Física d’Altes Energies [Barcelone] (IFAE), Universitat Autònoma de Barcelona (UAB), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Instituto de Fisica Corpuscular (IFIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universitat de València (UV), Politecnico di Milano [Milan] (POLIMI), Universitá degli Studi dell’Insubria, Technische Universität Dortmund [Dortmund] (TU), IEEC-CSIC, Departamento de Ecología e Hidrología, Universidad de Murcia, Laboratoire d'études dynamiques et structurales de la sélectivité (LEDSS), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Département de Physique des Particules (ex SPP) (DPP), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Departament d'Astronomia i Meteorologia [Barcelona] (DAM), Universitat de Barcelona (UB), Universita degli Studi di Padova, Universidad de Cantabria [Santander], Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare (INFN), Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) (MPI-P), Instituto de Biotecnología, Departamento de Biología Molecular de Plantas, UNAM, Institute for Physical Research (IPR), National Academy of Sciences of the Republic of Armenia [Yerevan] (NAS RA), Netherlands Institute for Radio Astronomy (ASTRON), INAF - Osservatorio Astronomico di Trieste (OAT), Istituto Nazionale di Astrofisica (INAF), Instituto de Física Teórica UAM/CSIC (IFT), Universidad Autonoma de Madrid (UAM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Dept. of Physics, Institut de Ciencies del Cosmos (ICCUB), Kao Group, Centre de Recherches sur les Macromolécules Végétales (CERMAV), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Optoelectronic Research Centre, University of Southampton, Department of Chemistry, Oulu, INAF - Osservatorio Astronomico di Brera (OAB), Max-Planck-Institut für Kernphysik (MPIK), Max-Planck-Gesellschaft, Universität Erlangen-Nürnberg - Erlangen, German Aerospace Center (DLR), Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Universitá degli Studi dell’Insubria = University of Insubria [Varese] (Uninsubria), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Università degli Studi di Padova = University of Padua (Unipd), Universidad Autónoma de Madrid (UAM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Universitat de Barcelona
Subjects: Astrofísica, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Photon, Spectral shape analysis, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Radio galaxy, Raigs còsmics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], X-ray astronomy, Galaxies: individual: IC 310, galaxies active, galaxies individual, IC 310, gamma rays galaxies, X-rays galaxies, Gamma ray astronomy, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Galaxies: active, Gamma rays: galaxies, X-rays: galaxies, Astronomy and Astrophysics, Space and Planetary Science, Astronomia de raigs gamma, Blazar, Cosmic rays, ComputingMilieux_MISCELLANEOUS, Physics, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Light curve, Galaxy, Astronomia de raigs X, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], Galàxies actives, Active galaxies, ddc:520, Astrophysics - High Energy Astrophysical Phenomena, Schwarzschild radius, Order of magnitude
Abstract: Context. The radio galaxy IC 310 has recently been identified as a gamma-ray emitter based on observations at GeV energies with Fermi-LAT and at very high energies (VHE, E>100GeV) with the MAGIC telescopes. Originally classified as a head-tail radio galaxy, the nature of this object is subject of controversy since its nucleus shows blazar-like behavior. Aims. In order to understand the nature of IC 310 and the origin of the VHE emission we studied the spectral and flux variability of IC 310 from the X-ray band to the VHE gamma-ray regime. Methods. The light curve of IC 310 above 300GeV has been measured with the MAGIC telescopes from Oct. 2009 to Feb. 2010. Fermi-LAT data (2008-2011) in the 10-500GeV energy range were also analyzed. In X-ray, archival observations from 2003 to 2007 with XMM, Chandra, and Swift-XRT in the 0.5-10keV band were studied. Results. The VHE light curve reveals several high-amplitude and short-duration flares. Day-to-day flux variability is clearly present. The photon index between 120GeV and 8TeV remains at the value $\Gamma\sim2.0$ during both low and high flux states. The VHE spectral shape does not show significant variability, whereas the flux at 1TeV changes by a factor of $\sim7$. Fermi-LAT detected only eight gamma-ray events in the energy range 10GeV-500GeV in three years of observation. The measured photon index of $\Gamma=1.3\pm0.5$ in the Fermi-LAT range is very hard. The X-ray measurements show strong variability in flux and photon index. The latter varied from $1.76\pm0.07$ to $2.55\pm0.07$. Conclusion. The rapid variability measured confirms the blazar-like behavior of IC 310. The TeV emission seems to originate from scales of less than 80 Schwarzschild radii within the compact core of its FRI radio jet with orientation angle 10deg-38deg. The SED resembles that of an extreme blazar, albeit the luminosity is more than two orders of magnitude lower., Comment: 9 pages, 5 figures, 4 tables. Accepted for publication in A&A
Published: 2013
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17. The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) III. Construction of the first flux-limited supercluster sample

Author: Gayoung Chon, Nina Nowak, and Hans Böhringer
Subjects: Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Velocity dispersion, Astronomy, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Redshift, Space and Planetary Science, Supercluster, Cluster (physics), Cluster sampling, Brightest cluster galaxy, Galaxy cluster, Astrophysics::Galaxy Astrophysics, Luminosity function (astronomy), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We present the first supercluster catalogue constructed with the extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster survey (REFLEX II) data, which comprises 919 X-ray selected galaxy clusters. Based on this cluster catalogue we construct a supercluster catalogue using a friends-of-friends algorithm with a linking length depending on the local cluster density. The resulting catalogue comprises 164 superclusters at redshift z, 16 pages, 11 figures, accepted by MNRAS
Published: 2012

18. Observations of the magnetars 4U 0142+61 and 1E 2259+586 with the MAGIC telescopes

Author: K. Berger, E. Prandini, Aldo Treves, Felix Spanier, J. Moldón, Daniel Ferenc, R. Zanin, A. Saggion, Adrian Biland, D. Dominis Prester, A. Boller, S. Partini, E. Colombo, Ivica Puljak, Francisco Prada, L. Cossio, Pierre Colin, Dario Hrupec, M. A. Lopez, Ralph Bock, L. O. Takalo, Mario Meucci, V. Scapin, S. Bonnefoy, R. Reinthal, Dominik Elsaesser, Daniela Dorner, Nijil Mankuzhiyil, J. M. Paredes, P. Munar-Adrover, P. G. Prada Moroni, U. Barres de Almeida, Damir Lelas, Nikola Godinovic, Benito Marcote, Konstancja Satalecka, P. Temnikov, Michele Doro, Antonio Stamerra, Artemio Herrero, Dorota Sobczyńska, Q. Weitzel, Tihomir Surić, D. Carreto Fidalgo, Thomas Bretz, S. N. Shore, Fabio Zandanel, M. Pilia, Aaron Dominguez, Shan Sun, Takashi Saito, Ignasi Reichardt, M. Gaug, Jelena Aleksić, Stefano Covino, Giacomo Bonnoli, Marc Ribó, Martin Makariev, Oscar Blanch, Reiko Orito, T. Schweizer, O. Tibolla, R. Mirzoyan, V. Kadenius, S. Paiano, Karl Mannheim, Julian Sitarek, Nanda Rea, S. Rügamer, A. López-Oramas, K. Saito, D. Eisenacher, A. Niedzwiecki, Wlodek Bednarek, Alessandro Carosi, Natalia Lewandowska, Juan Abel Barrio, M. Asensio, J. Hose, M. Doert, Elisa Bernardini, D. Borla Tridon, F. Jankowski, A. La Barbera, Ruben Lopez-Coto, M. Uellenbeck, A. Hadamek, G. Maneva, D. Tescaro, D. Nakajima, Daniel Nieto, T. Toyama, J. Storz, Mosè Mariotti, G. De Caneva, E. Carmona, Markus Garczarczyk, David Paneque, M. Palatiello, Jose Miguel Miranda, Nina Nowak, M. L. Knoetig, D. Garrido Terrats, P. Antoranz, C. Delgado Mendez, S. R. Gozzini, K. Mallot, Wolfgang Rhode, A. De Angelis, J. Rico, L. Maraschi, M. V. Fonseca, Francesco Dazzi, Tomislav Terzić, Saverio Lombardi, R. J. García López, V. Scalzotto, Elina Lindfors, Christian Fruck, M. Salvati, E. Leonardo, Daniel Mazin, A. Sillanpää, Gianluca Giavitto, P. Da Vela, B. Steinke, A. González Muñoz, Riccardo Paoletti, Victor Stamatescu, J. Masbou, I. Lozano, D. Hadasch, M. I. Martínez, Robert Wagner, Massimo Persic, T. Krähenbühl, C. Schultz, Masahiro Teshima, J. Kushida, Jose Luis Contreras, L. Font, Hajime Takami, Juan Cortina, Kari Nilsson, Patrick Vogler, L. A. Antonelli, Fabrizio Tavecchio, I. Snidaric, S. Spiro, E. Lorenz, Diego F. Torres, Abelardo Moralejo, J. Krause, B. De Lotto, S. Klepser, Universitat de Barcelona, Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare (INFN), Institut de Física d’Altes Energies [Barcelone] (IFAE), Universitat Autònoma de Barcelona (UAB), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Instituto de Fisica Corpuscular (IFIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universitat de València (UV), Politecnico di Milano [Milan] (POLIMI), Universitá degli Studi dell’Insubria, Technische Universität Dortmund [Dortmund] (TU), IEEC-CSIC, Departamento de Ecología e Hidrología, Universidad de Murcia, Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Friedrich-Alexander-Universität, Deutsches Elektronen-Synchrotron [Zeuthen] (DESY), Helmholtz-Gemeinschaft = Helmholtz Association, Laboratoire d'études dynamiques et structurales de la sélectivité (LEDSS), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Département de Physique des Particules (ex SPP) (DPP), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Departament d'Astronomia i Meteorologia [Barcelona] (DAM), Universitat de Barcelona (UB), Universita degli Studi di Padova, Universidad de Cantabria [Santander], Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) (MPI-P), Instituto de Biotecnología, Departamento de Biología Molecular de Plantas, UNAM, Institute for Physical Research (IPR), National Academy of Sciences of the Republic of Armenia [Yerevan] (NAS RA), Netherlands Institute for Radio Astronomy (ASTRON), INAF - Osservatorio Astronomico di Trieste (OAT), Istituto Nazionale di Astrofisica (INAF), INAF-Cagliari Astronomical Observatory, Instituto de Física Teórica UAM/CSIC (IFT), Universidad Autonoma de Madrid (UAM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Dept. of Physics, Institut de Ciencies del Cosmos (ICCUB), Kao Group, Centre de Recherches sur les Macromolécules Végétales (CERMAV), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Optoelectronic Research Centre, University of Southampton, Department of Chemistry, Oulu, INAF - Osservatorio Astronomico di Brera (OAB), Max-Planck-Institut für Kernphysik (MPIK), Max-Planck-Gesellschaft, Institut de Ciencies de l'Espai [Barcelona] (ICE-CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Universitá degli Studi dell’Insubria = University of Insubria [Varese] (Uninsubria), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Università degli Studi di Padova = University of Padua (Unipd), Universidad Autónoma de Madrid (UAM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], High energy, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], astro-ph.GA, Astronomy, FOS: Physical sciences, Astrophysics, Magnetar, 01 natural sciences, Neutron stars, law.invention, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Telescope, law, Gamma ray astronomy, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Astronomia de raigs gamma, Analysis software, 010306 general physics, 010303 astronomy & astrophysics, Cherenkov radiation, Estels de neutrons, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Telescopis, Magic (programming), Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, radiation mechanisms: non-thermal, stars: magnetars, gamma rays: stars, stars: individual: 4U 0142+61, 1E 2259+586, Neutron star, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Astronomia, ddc:520, Astrophysics - High Energy Astrophysical Phenomena, High magnetic field, Telescopes
Abstract: Astronomy and astrophysics 549(A23), 1-4 (2013). doi:10.1051/0004-6361/201220275, Magnetars are an extreme, highly magnetized class of isolated neutron stars whose large X-ray luminosity is believed to be driven by their high magnetic field. In this work we study for the first time the possible very high energy gamma-ray emission above 100 GeV from magnetars, observing the sources 4U 0142+61 and 1E 2259+586. We observed the two sources with atmospheric Cherenkov telescopes in the very high energy range (E > 100 GeV). 4U 0142+61 was observed with the MAGIC I telescope in 2008 for ~25 h and 1E 2259+586 was observed with the MAGIC stereoscopic system in 2010 for ~14 h. The data were analyzed with the standard MAGIC analysis software. Neither magnetar was detected. Upper limits to the differential and integral flux above 200 GeV were computed using the Rolke algorithm. We obtain integral upper limits to the flux of 1.52*10^-12cm^-2 s^-1 and 2.7*10^-12cm^-2 s^-1 with a confidence level of 95% for 4U 0142+61 and 1E 2259+586, respectively. The resulting differential upper limits are presented together with X-ray data and upper limits in the GeV energy range., Published by EDP Sciences, Les Ulis
Published: 2012
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19. Discovery of VHE gamma-rays from the blazar 1ES 1215+303 with the MAGIC Telescopes and simultaneous multi-wavelength observations

Author: I. Snidaric, Aaron Dominguez, M. Makariev, Victor Zabalza, S. Spiro, E. Lorenz, Daniela Dorner, R. J. García López, I. Puerto Gimenez, Natalia Lewandowska, S. Larsson, Massimo Persic, Elisa Bernardini, D. Hildebrand, F. Jankowski, A. La Barbera, Abelardo Moralejo, W. Bednarek, Fabrizio Tavecchio, K. Berger, M. I. Martínez, Gianluca Giavitto, E. A. Alvarez, A. González Muñoz, K. Saito, Patrick Vogler, Silvia Pardo, Dario Hrupec, Joni Tammi, B. Huber, P. G. Prada Moroni, S. Partini, A. De Angelis, J. Becerra González, M. A. Lopez, S. Rügamer, E. De Cea del Pozo, A. Boller, Ignasi Reichardt, Juan Abel Barrio, L. Cossio, A. Diago Ortega, Robert Wagner, T. Krähenbühl, D. Eisenacher, O. Tibolla, Mario Meucci, V. Scapin, Artemio Herrero, L. Maraschi, D. Borla Tridon, G. Maneva, Stefano Ansoldi, E. Carmona, Jelena Aleksić, N. Strah, Nikola Godinovic, Markus Garczarczyk, Riccardo Paoletti, Andrei Berdyugin, Tomislav Terzić, T. Jogler, R. Zanin, A. Saggion, A. Niedzwiecki, Adrian Biland, Emilia Järvelä, Nina Nowak, Daniel Ferenc, M. Asensio, Denis Bastieri, Q. Weitzel, J. M. Paredes, C. Schultz, J. Rico, Diego F. Torres, David Paneque, Tihomir Surić, Antonio Stamerra, Oscar Blanch, Marc Ribó, Louis Antonelli, M. Salvati, V. Kadenius, S. Paiano, C. Delgado Mendez, S. R. Gozzini, M. Doert, Michael Backes, J. Hose, A. Sillanpää, M. A. Perez-Torres, Karl Mannheim, Felix Spanier, L. Font, Francesco Dazzi, M. V. Fonseca, E. Colombo, J. Krause, D. Elsaesser, J. Storz, G. Bonnoli, E. Leonardo, P. Antoranz, B. De Lotto, Nijil Mankuzhiyil, Christian Fruck, Hajime Takami, P. Munar-Adrover, Kari Nilsson, Daniel Nieto, Thomas Bretz, Konstancja Satalecka, Michele Doro, S. N. Shore, D. Dominis Prester, S. Klepser, B. Steinke, G. De Caneva, Hanna Kellermann, M. Pilia, Francisco Prada, A. López-Oramas, Alessandro Carosi, D. Garrido Terrats, A. Cañellas, Ruben Lopez-Coto, Ralph Bock, V. Scalzotto, L. O. Takalo, Wolfgang Rhode, Jose Miguel Miranda, J. Moldón, D. Häfner, S. Buson, T. Schweizer, Jose Luis Contreras, Juan Cortina, Mosè Mariotti, Ivica Puljak, Pierre Colin, Saverio Lombardi, J. Pochon, R. Reinthal, Razmik Mirzoyan, U. Barres de Almeida, Damir Lelas, Elina Lindfors, Daniel Mazin, Dorota Sobczyńska, Stefano Covino, D. Tescaro, E. Prandini, Takashi Saito, Aldo Treves, Reiko Orito, P. Da Vela, Julian Sitarek, Victor Stamatescu, P. Temnikov, Fabio Zandanel, Shan Sun, D. Hadasch, Anne Lähteenmäki, Masahiro Teshima, M. Uellenbeck, Department of Radio Science and Engineering, School services, ELEC, Aalto-yliopisto, Aalto University, and Anne Lähteenmäki Group
Subjects: gamma-rays: galaxies, Astrophysics::High Energy Astrophysical Phenomena, education, FOS: Physical sciences, Astrophysics, gamma ray astronomy, Cosmic rays, IMAGING CHERENKOV DETECTOR, 01 natural sciences, law.invention, Telescope, Radio telescope, law, BL Lacertae objects: individual: 1ES 1215+303, Target of opportunity, 0103 physical sciences, Gamma ray astronomy, Astronomia de raigs gamma, Blazar, 010303 astronomy & astrophysics, individual: 1ES 1215+303 [BL Lacertae objects], Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, 010308 nuclear & particles physics, 213 Electronic, automation and communications engineering, electronics, Optical polarization, Astronomy and Astrophysics, Galaxies, Galàxies, galaxies [gamma-rays], Space and Planetary Science, 115 Astronomy and space science, Spectral energy distribution, ddc:520, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope, BL Lac object
Abstract: Context. We present the discovery of very high energy (VHE, E > 100GeV) gamma-ray emission from the BL Lac object 1ES 1215+303 by the MAGIC telescopes and simultaneous multi-wavelength data in a broad energy range from radio to gamma-rays. Aims. We study the VHE gamma-ray emission from 1ES 1215+303 and its relation to the emissions in other wavelengths. Methods. Triggered by an optical outburst, MAGIC observed the source in January-February 2011 for 20.3 hrs. The target was monitored in the optical R-band by the KVA telescope that also performed optical polarization measurements. We triggered target of opportunity observations with the Swift satellite and obtained simultaneous and quasi-simultaneous data from the Fermi Large Area Telescope and from the Mets��hovi radio telescope. We also present the analysis of older MAGIC data taken in 2010. Results. The MAGIC observations of 1ES 1215+303 carried out in January-February 2011 resulted in the first detection of the source at VHE with a statistical significance of 9.4 sigma. Simultaneously, the source was observed in a high optical and X-ray state. In 2010 the source was observed in a lower state in optical, X-ray, and VHE, while the GeV gamma-ray flux and the radio flux were comparable in 2010 and 2011. The spectral energy distribution obtained with the 2011 data can be modeled with a simple one zone SSC model, but it requires extreme values for the Doppler factor or the electron energy distribution., 10 pages, 8 figures, accepted to A&A
Published: 2012
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20. Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes

Author: Adrian Biland, Aaron Dominguez, K. Berger, L. Maraschi, Elina Lindfors, Daniel Mazin, Fabio Zandanel, E. Colombo, S. Partini, D. Höhne-Mönch, Felix Spanier, Abelardo Moralejo, K. Saito, J. M. Paredes, Ralph Bock, L. O. Takalo, Victor Stamatescu, Stefano Covino, Antonio Stamerra, M. V. Fonseca, M. Uellenbeck, M. Shayduk, R. Reinthal, D. Eisenacher, V. Scalzotto, P. Antoranz, Oscar Blanch, Victor Zabalza, Christian Fruck, Patrick Vogler, Dominik Elsaesser, J. Moldón, Ignasi Reichardt, D. Dominis Prester, P. G. Prada Moroni, E. Carmona, Markus Garczarczyk, Silvia Pardo, T. Schweizer, Damir Lelas, J. Storz, D. Häfner, M. Doert, Michael Backes, T. Jogler, J. Krause, B. De Lotto, O. Tibolla, B. Steinke, C. Delgado Mendez, Nina Nowak, L. A. Antonelli, Nijil Mankuzhiyil, P. Munar-Adrover, Francisco Prada, Dorota Sobczyńska, G. Maneva, Konstancja Satalecka, Michele Doro, S. Klepser, Mosè Mariotti, Daniel Ferenc, Jelena Aleksić, Francesco Dazzi, Daniela Dorner, Elisa Prandini, M. A. Perez-Torres, H. Vankov, A. Niedzwiecki, W. Bednarek, S. Rügamer, Diego F. Torres, Ilana M. Braun, M. Pilia, E. Leonardo, Juan Abel Barrio, Kari Nilsson, David Paneque, Fabrizio Tavecchio, M. Asensio, Aldo Treves, D. Borla Tridon, A. Sillanpää, I. Puljak, Masahiro Teshima, Petar Temnikov, Julian Sitarek, Ll. Font, Elisa Bernardini, H. Kellermann, A. Cañellas, E. De Cea del Pozo, Saverio Lombardi, Takashi Saito, Gianluca Giavitto, G. Bonnoli, Pierre Colin, R. J. García López, J. Pochon, Jose Luis Contreras, A. Diago Ortega, Robert Wagner, Riccardo Paoletti, Dario Hrupec, Reiko Orito, J. Hose, Daniela Hadasch, Juan Cortina, M. A. Lopez, I. Snidaric, A. De Angelis, M. Salvati, Tomislav Terzić, J. Kushida, Thomas Bretz, S. N. Shore, R. Mirzoyan, S. Spiro, E. Lorenz, Wolfgang Rhode, Daniel Nieto, Marc Ribó, A. Boller, L. Cossio, Artemio Herrero, M. Makariev, J. Rico, I. Puerto Gimenez, Roberta Zanin, D. Hildebrand, L. Peruzzo, M. I. Martínez, D. Tescaro, T. Krähenbühl, N. Strah, A. López-Oramas, Alessandro Carosi, D. Garrido, Jose Miguel Miranda, Kouichi Hirotani, Hajime Takami, Andrei Berdyugin, G. De Caneva, C. Schultz, Massimo Persic, V. Scapin, E. A. Alvarez, Nikola Godinovic, Denis Bastieri, Q. Weitzel, Tihomir Surić, Karl Mannheim, Natalia Lewandowska, A. La Barbera, J. Becerra González, Mario Meucci, and A. Saggion
Subjects: Photon, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Flux, Astrophysics, ACCELERATION, 01 natural sciences, Spectral line, gamma rays: stars, pulsars: individual: Crab Pulsar, Raigs gamma, SLOT GAPS, Pulsar, NEBULA, OUTER MAGNETOSPHERE, 0103 physical sciences, MAGIC (telescope), 010306 general physics, 010303 astronomy & astrophysics, Cosmic rays, Pulsars, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, astro-ph.HE, Crab Pulsar, gamma ray astronomy, IMAGING CHERENKOV DETECTOR, Gamma rays, Compton scattering, Astronomy and Astrophysics, GAMMA-RAY EMISSION, RADIATION, WIND, Stars, Estels, Púlsars, Crab Nebula, Space and Planetary Science, ddc:520, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We use 73 h of stereoscopic data taken with the MAGIC telescopes to investigate the very high-energy (VHE) gamma-ray emission of the Crab pulsar. Our data show a highly significant pulsed signal in the energy range from 50 to 400 GeV in both the main pulse (P1) and the interpulse (P2) phase regions. We provide the widest spectra to date of the VHE components of both peaks, and these spectra extend to the energy range of satellite-borne observatories. The good resolution and background rejection of the stereoscopic MAGIC system allows us to cross-check the correctness of each spectral point of the pulsar by comparison with the corresponding (strong and well-known) Crab nebula flux. The spectra of both P1 and P2 are compatible with power laws with photon indices of 4.0 \pm 0.8 (P1) and 3.42 \pm 0.26 (P2), respectively, and the ratio P1/P2 between the photon counts of the two pulses is 0.54 \pm 0.12. The VHE emission can be understood as an additional component produced by the inverse Compton scattering of secondary and tertiary e\pm pairs on IR-UV photons., 6 pages, 4 figures. Accepted for publication in A&A on 16 February 2012
Published: 2012
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21. Morphological and spectral properties of the W51 region measured with the MAGIC telescopes

Author: R. Zanin, A. Saggion, Nikola Godinovic, Daniel Nieto, Adrian Biland, Gianluca Giavitto, A. González Muñoz, Hanna Kellermann, Takashi Saito, J. M. Paredes, Antonio Stamerra, D. Dominis Prester, P. G. Prada Moroni, D. Häfner, O. Tibolla, T. Jogler, R. Reinthal, Nina Nowak, L. Maraschi, Elina Lindfors, R. J. García López, J. Rico, Dominik Elsaesser, Francesco Dazzi, M. V. Fonseca, Reiko Orito, U. Barres de Almeida, Aaron Dominguez, Daniel Mazin, E. Leonardo, Silvia Pardo, J. Storz, Nijil Mankuzhiyil, Giacomo Bonnoli, Christian Fruck, Damir Lelas, P. Munar-Adrover, M. A. Perez-Torres, Victor Stamatescu, Francisco Prada, M. I. Martínez, M. Asensio, A. Cañellas, J. Krause, A. Diago Ortega, Robert Wagner, Massimo Persic, B. De Lotto, Dorota Sobczyńska, G. De Caneva, Louis Antonelli, B. Steinke, Victor Zabalza, Denis Bastieri, Q. Weitzel, C. Delgado Mendez, S. R. Gozzini, Stefano Covino, T. Krähenbühl, Tihomir Surić, Tomislav Terzić, R. Mirzoyan, Riccardo Paoletti, D. Eisenacher, Daniela Dorner, S. Rügamer, N. Strah, E. Colombo, Ralph Bock, E. Carmona, Markus Garczarczyk, Konstancja Satalecka, Michele Doro, E. Prandini, K. Berger, S. Klepser, Juan Abel Barrio, Dario Hrupec, M. A. Lopez, L. O. Takalo, Jelena Aleksić, D. Tescaro, Masahiro Teshima, A. Boller, L. Cossio, A. Niedzwiecki, D. Borla Tridon, Aldo Treves, M. Salvati, Mosè Mariotti, Julian Sitarek, Marc Ribó, Elisa Bernardini, David Paneque, M. Uellenbeck, A. Sillanpää, Diego F. Torres, J. Hose, Daniela Hadasch, B. Huber, Artemio Herrero, V. Kadenius, Felix Spanier, A. De Angelis, Abelardo Moralejo, S. Paiano, Ignasi Reichardt, Saverio Lombardi, Ivica Puljak, Pierre Colin, P. Temnikov, Hajime Takami, Daniel Ferenc, Karl Mannheim, Fabio Zandanel, P. Da Vela, Shan Sun, J. Pochon, G. Maneva, Natalia Lewandowska, F. Jankowski, I. Puerto Gimenez, A. La Barbera, T. Schweizer, C. Schultz, V. Scapin, D. Hildebrand, J. Becerra González, Mario Meucci, P. Antoranz, S. Partini, Martin Makariev, Oscar Blanch, M. Doert, Michael Backes, A. López-Oramas, Wlodek Bednarek, Alessandro Carosi, Ruben Lopez-Coto, Thomas Bretz, D. Garrido, S. N. Shore, M. Pilia, Jose Miguel Miranda, Wolfgang Rhode, E. De Cea del Pozo, V. Scalzotto, J. Moldón, Fabrizio Tavecchio, Kari Nilsson, Ll. Font, I. Snidaric, S. Spiro, E. Lorenz, Jose Luis Contreras, K. Saito, Juan Cortina, Patrick Vogler, and E. A. Alvarez
Subjects: Hadron, Astrophysics, MOLECULAR CLOUD, 01 natural sciences, Pulsar wind nebula, SUPERNOVA REMNANT W51C, Raigs gamma, MHZ, Supernova remnant, 010303 astronomy & astrophysics, Physics, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Supernoves, Acceleradors de partícules, gamma ray astronomy, IMAGING CHERENKOV DETECTOR, Cosmic rays, Gamma ray, NONTHERMAL EMISSION, GAMMA-RAY EMISSION, GALACTIC COSMIC-RAYS, ACCELERATION, DISCOVERY, RADIATION, Supernovae, Spectral energy distribution, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, acceleration of particles, gamma rays: general, ISM: supernova remnants, ISM: clouds, gamma rays: ISM, 0103 physical sciences, 010306 general physics, Astrophysics::Galaxy Astrophysics, Molecular cloud, Gamma rays, Astronomy and Astrophysics, Particle accelerators, 13. Climate action, Space and Planetary Science, ddc:520, Fermi Gamma-ray Space Telescope
Abstract: The W51 complex hosts the supernova remnant W51C which is known to interact with the molecular clouds in the star forming region W51B. In addition, a possible pulsar wind nebula CXO J192318.5+140305 was found likely associated with the supernova remnant. Gamma-ray emission from this region was discovered by Fermi/LAT (between 0.2 and 50 GeV) and H.E.S.S. (>1 TeV). The spatial distribution of the events could not be used to pinpoint the location of the emission among the pulsar wind nebula, the supernova remnant shell and/or the molecular cloud. However, the modeling of the spectral energy distribution presented by the Fermi/LAT collaboration suggests a hadronic emission mechanism. We performed observations of the W51 complex with the MAGIC telescopes for more than 50 hours. The good angular resolution in the medium (few hundred GeV) to high (above 1 TeV) energies allow us to perform morphological studies. We detect an extended emission of very-high-energy gamma rays, with a significance of 11 standard deviations. We extend the spectrum from the highest Fermi/LAT energies to \sim 5 TeV and find that it follows a single power law with an index of 2.58 \pm 0.07stat \pm 0.22syst . The main part of the emission coincides with the shocked cloud region, while we find a feature extending towards the pulsar wind nebula. The possible contribution of the pulsar wind nebula, assuming a point-like source, shows no dependence on energy and it is about 20% of the overall emission. The broad band spectral energy distribution can be explained with a hadronic model that implies proton acceleration above 100 TeV. This result, together with the morphology of the source, tentatively suggests that we observe ongoing acceleration of ions in the interaction zone between supernova remnant and cloud. These results shed light on the long-standing problem of the origin of galactic cosmic rays., 11 pages, 7 figures, accepted by A&A, corresponding authors: J. Krause, I Reichardt, E. Carmona
Published: 2012
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22. Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501

Author: M. Doert, A. Pichel, David Paneque, Nina Nowak, D. Tescaro, U. Barres de Almeida, and Wystan Benbow
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, Spectral energy distribution, Flux, Astronomy, High activity, Broad band, Astrophysics::Cosmology and Extragalactic Astrophysics, MAGIC (telescope), Astrophysics, Polarization (waves), BL Lac object
Abstract: The BL Lac objects Mrk 421 and Mrk 501 are objects of a large multi-year multiinstrument campaign including VLBA, F-GAMMA, GASP-WEBT, Swift, RXTE, Fermi-LAT, MAGIC and VERITAS, among other instruments and collaborations. This extensive radio to TeV gamma-ray dataset provides an unprecedented temporal and energy coverage, which allows for detailed studies of the evolution of their broad-band spectral energy distribution that cannot be achieved on any other BL Lac object. We report on the temporal variability and spectral correlations from the 4.5 months-long campaigns of 2009. We show that Mrk 421 and Mrk 501 have differences in their broad band variability, suggesting different mechanisms for the production of the high-energy emission. In addition, we also report on two events of high activity in very high energies (VHE) of Mrk 501 during May 2009, one of which was not accompanied by enhanced optical/X-ray activity but showed a clear correlation with an increase in the polarized optical flux and a rotation of the polarization vector. This is the first time that such type of flaring activity is observed in a high-synchrotron-peaked BL Lac object.
Published: 2012
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23. Detection of very-high energy gamma-ray emission from NGC 1275 by the MAGIC telescopes

Author: H. Vankov, Ilana M. Braun, E. De Cea del Pozo, A. López-Oramas, Wlodek Bednarek, Alessandro Carosi, Ruben Lopez-Coto, D. Garrido, Jose Miguel Miranda, Thomas Bretz, S. N. Shore, T. Jogler, Abelardo Moralejo, Wolfgang Rhode, A. Diago Ortega, Robert Wagner, Dario Hrupec, M. A. Lopez, J. Moldón, K. Saito, M. V. Fonseca, A. De Angelis, Nijil Mankuzhiyil, D. Dominis Prester, T. Krähenbühl, P. Munar-Adrover, Patrick Vogler, Francesco Dazzi, R. Reinthal, A. Cañellas, Ignasi Reichardt, Stefano Covino, L. A. Antonelli, M. Doert, Michael Backes, Victor Stamatescu, E. Leonardo, B. Steinke, Konstancja Satalecka, Dominik Elsaesser, N. Strah, Michele Doro, U. Barres de Almeida, G. Maneva, R. Zanin, Jelena Aleksić, Francisco Prada, C. Delgado Mendez, S. R. Gozzini, A. Saggion, A. Niedzwiecki, Damir Lelas, Fabrizio Tavecchio, P. Temnikov, Adrian Biland, David Paneque, Fabio Zandanel, Shan Sun, I. Snidaric, Silvia Pardo, J. Rico, S. Rügamer, Daniel Nieto, Kari Nilsson, R. J. García López, Juan Abel Barrio, Dorota Sobczyńska, S. Spiro, E. Lorenz, D. Borla Tridon, Riccardo Paoletti, Daniela Dorner, K. Berger, M. Uellenbeck, L. Maraschi, Elina Lindfors, G. De Caneva, J. M. Paredes, Antonio Stamerra, Daniel Mazin, Massimo Persic, Diego F. Torres, E. A. Alvarez, M. Pilia, P. G. Prada Moroni, T. Schweizer, E. Prandini, V. Scalzotto, S. Partini, D. Höhne-Mönch, O. Tibolla, Felix Spanier, Christoph Pfrommer, M. Shayduk, J. Storz, Elisa Bernardini, Nikola Godinovic, Aldo Treves, H. Kellermann, J. Krause, B. De Lotto, P. Antoranz, Masahiro Teshima, Takashi Saito, Marc Ribó, Gianluca Giavitto, Jose Luis Contreras, Ivica Puljak, Pierre Colin, M. Salvati, S. Klepser, Reiko Orito, Juan Cortina, Martin Makariev, A. Sillanpää, Julian Sitarek, Oscar Blanch, J. Hose, Daniela Hadasch, C. Fruck, J. Kushida, Anders Pinzke, Andrei Berdyugin, C. Schultz, V. Scapin, Tomislav Terzić, Aaron Dominguez, Victor Zabalza, Giacomo Bonnoli, M. Asensio, L. Font, Hajime Takami, I. Puerto Gimenez, E. Colombo, D. Hildebrand, L. Peruzzo, Ralph Bock, A. Boller, L. Cossio, L. O. Takalo, Mosè Mariotti, Artemio Herrero, Saverio Lombardi, J. Pochon, D. Häfner, M. I. Martínez, D. Tescaro, R. Mirzoyan, D. Eisenacher, Natalia Lewandowska, E. Carmona, Markus Garczarczyk, Nina Nowak, A. La Barbera, M. A. Perez-Torres, J. Becerra González, Mario Meucci, Denis Bastieri, Q. Weitzel, Tihomir Surić, S. Paiano, Karl Mannheim, and Daniel Ferenc
Subjects: POLARIZATION, Radio galaxy, Astrophysics::High Energy Astrophysical Phenomena, NGC-1275, Flux, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, gamma ray astronomy, Cosmic rays, IMAGING CHERENKOV DETECTOR, 01 natural sciences, Power law, Raigs gamma, 0103 physical sciences, MAGIC (telescope), galaxies: active, galaxies: jets, galaxies: individual (NGC 1275), galaxies: individual (IC 310), gamma rays: galaxies, Nuclear Experiment, 010303 astronomy & astrophysics, CRAB-NEBULA, GALAXY M87, IC 310, PERFORMANCE, DISCOVERY, EVOLUTION, VERITAS, astro-ph.HE, Physics, Spectral index, 010308 nuclear & particles physics, Gamma rays, Gamma ray, Astronomy and Astrophysics, Galaxies, Light curve, Galaxy, Galàxies, Space and Planetary Science, ddc:520, High Energy Physics::Experiment, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We report on the detection of very-high energy (VHE, E>100 GeV) gamma-ray emission from NGC 1275, the central radio galaxy of the Perseus cluster of galaxies. The source has been detected by the MAGIC telescopes with a statistical significance of 6.6 sigma above 100 GeV in 46 hr of stereo observations carried out between August 2010 and February 2011. The measured differential energy spectrum between 70 GeV and 500 GeV can be described by a power law with a steep spectral index of \Gamma=-4.1+/-0.7stat+/-0.3syst, and the average flux above 100 GeV is F_{gamma}=(1.3+/-0.2stat+/-0.3syst) x 10^-11 cm^-2 s^-1. These results, combined with the power-law spectrum measured in the first two years of observations by the Fermi-LAT above 100 MeV, with a spectral index of Gamma ~ -2.1, strongly suggest the presence of a break or cut-off around tens of GeV in the NGC 1275 spectrum. The light curve of the source above 100 GeV does not show hints of variability on a month time scale. Finally, we report on the nondetection in the present data of the radio galaxy IC 310, previously discovered by the Fermi-LAT and MAGIC. The derived flux upper limit F^{U.L.}_{gamma} (>300 GeV)=1.2 x 10^-12 cm^-2 s^-1 is a factor ~ 3 lower than the mean flux measured by MAGIC between October 2009 and February 2010, thus confirming the year time-scale variability of the source at VHE., Comment: Corresponding authors are S. Lombardi, P. Colin, D. Hildebrand, and F. Zandanel. Published in A&A; 4 pages, 4 figures
Published: 2012
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24. Constraining cosmic rays and magnetic fields in the Perseus galaxy cluster with TeV observations by the MAGIC telescopes

Author: S. Partini, D. Höhne-Mönch, V. Scalzotto, Silvia Pardo, G. De Caneva, Ivica Puljak, Pierre Colin, D. Dominis Prester, Martin Makariev, Oscar Blanch, Francisco Prada, Thomas Bretz, S. N. Shore, Marc Ribó, J. Krause, J. M. Paredes, Antonio Stamerra, A. Sillanpää, M. V. Fonseca, J. Storz, Kari Nilsson, B. De Lotto, Riccardo Paoletti, M. Doert, Michael Backes, P. Temnikov, Fabio Zandanel, Shan Sun, J. Kushida, E. Prandini, Aldo Treves, Christian Fruck, E. A. Alvarez, L. A. Antonelli, K. Berger, Nijil Mankuzhiyil, P. Munar-Adrover, P. Antoranz, B. Steinke, Jose Luis Contreras, Stefano Covino, Julian Sitarek, J. Hose, T. Jogler, Daniela Hadasch, Anders Pinzke, S. Klepser, Juan Cortina, R. Reinthal, Nikola Godinovic, M. Pilia, Wolfgang Rhode, Dominik Elsaesser, Abelardo Moralejo, E. Colombo, U. Barres de Almeida, Damir Lelas, Felix Spanier, Daniel Ferenc, Daniel Nieto, Konstancja Satalecka, Michele Doro, Masahiro Teshima, Dorota Sobczyńska, J. Moldón, S. Rügamer, Juan Abel Barrio, H. Vankov, Ralph Bock, Christoph Pfrommer, L. O. Takalo, M. Uellenbeck, D. Borla Tridon, R. Mirzoyan, Ilana M. Braun, T. Schweizer, Tomislav Terzić, D. Eisenacher, Fabrizio Tavecchio, Ll. Font, A. Cañellas, D. Häfner, M. Salvati, I. Snidaric, A. Diago Ortega, Robert Wagner, Giacomo Bonnoli, Mosè Mariotti, E. De Cea del Pozo, E. Carmona, Markus Garczarczyk, M. Asensio, Victor Stamatescu, Dario Hrupec, Saverio Lombardi, L. Maraschi, Elina Lindfors, Jelena Aleksić, S. Spiro, E. Lorenz, J. Pochon, M. A. Lopez, K. Saito, Daniel Mazin, A. Niedzwiecki, Patrick Vogler, Diego F. Torres, David Paneque, Nina Nowak, Takashi Saito, M. A. Perez-Torres, Reiko Orito, I. Puerto Gimenez, D. Hildebrand, L. Peruzzo, M. I. Martínez, D. Tescaro, A. Boller, L. Cossio, Artemio Herrero, Natalia Lewandowska, Daniela Dorner, A. La Barbera, J. Becerra González, Mario Meucci, Elisa Bernardini, Denis Bastieri, Q. Weitzel, Tihomir Surić, H. Kellermann, S. Paiano, Karl Mannheim, C. Delgado Mendez, S. R. Gozzini, Gianluca Giavitto, A. De Angelis, P. G. Prada Moroni, Ignasi Reichardt, O. Tibolla, M. Shayduk, Francesco Dazzi, G. Maneva, R. J. García López, E. Leonardo, R. Zanin, A. Saggion, Massimo Persic, Adrian Biland, T. Krähenbühl, N. Strah, J. Rico, Andrei Berdyugin, A. López-Oramas, Wlodek Bednarek, Alessandro Carosi, C. Schultz, Ruben Lopez-Coto, V. Scapin, D. Garrido, Aaron Dominguez, Jose Miguel Miranda, Victor Zabalza, and Hajime Takami
Subjects: Radio galaxy, gamma rays: galaxies: clusters, acceleration of particles, galaxies: clusters: individual: Perseus, Astrophysics, SCALING RELATIONS, 01 natural sciences, 7. Clean energy, Raigs gamma, DIFFUSE RADIO-EMISSION, HADRONIC MODELS, 010303 astronomy & astrophysics, PARTICLE HYDRODYNAMICS SIMULATIONS, GAMMA-RAY, X-RAY, COMA CLUSTER, DARK-MATTER, INTRACLUSTER MEDIUM, HESS OBSERVATIONS, Physics, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Clusters of galaxies, Cosmic rays, gamma ray astronomy, IMAGING CHERENKOV DETECTOR, 16. Peace & justice, Magnetic field, astro-ph.CO, Electrónica, Física nuclear, Electricidad, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics, Cúmuls de galàxies, Structure formation, Active galactic nucleus, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, 0103 physical sciences, Cluster (physics), Cherenkov radiation, Galaxy cluster, Astrophysics::Galaxy Astrophysics, 010308 nuclear & particles physics, Gamma rays, Astronomy and Astrophysics, Galaxies, Galàxies, 13. Climate action, Space and Planetary Science, ddc:520
Abstract: Galaxy clusters are being assembled today in the most energetic phase of hierarchical structure formation which manifests itself in powerful shocks that contribute to a substantial energy density of cosmic rays (CRs). Hence, clusters are expected to be luminous gamma-ray emitters since they also act as energy reservoirs for additional CR sources, such as active galactic nuclei and supernova-driven galactic winds. To detect the gamma-ray emission from CR interactions with the ambient cluster gas, we conducted the deepest to date observational campaign targeting a galaxy cluster at very high-energy gamma-rays and observed the Perseus cluster with the MAGIC Cherenkov telescopes for a total of ~85 hr of effective observing time. This campaign resulted in the detection of the central radio galaxy NGC 1275 at energies E > 100 GeV with a very steep energy spectrum. Here, we restrict our analysis to energies E > 630 GeV and detect no significant gamma-ray excess. This constrains the average CR-to-thermal pressure ratio to be 4-9 microG, depending on the rate of decline of the magnetic field strength toward larger radii., Corresponding authors are F. Zandanel, C. Pfrommer, P. Colin, A. Pinzke and S. Lombardi. Accepted for publication in A&A on 06/03/2012
Published: 2012
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25. The supermassive black hole of Fornax A

Author: Ralf Bender, Jens Thomas, Richard Davies, Nina Nowak, Roberto P. Saglia, and Karl Gebhardt
Subjects: Physics, Very Large Telescope, Supermassive black hole, Radio galaxy, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Four quadrants, Orbit, Space and Planetary Science, Bulge, Fornax Cluster
Abstract: The radio galaxy Fornax A (NGC 1316) is a prominent merger remnant in the outskirts of the Fornax cluster. Its giant radio lobes suggest the presence of a powerful AGN and thus a central supermassive black hole (SMBH). We present high-resolution adaptive optics assisted integral-field data of Fornax A, taken with SINFONI at the Very Large Telescope in the K band. We use axisymmetric orbit models to determine the mass of the SMBH in the centre of Fornax A. The three-dimensional nature of our data provides the possibility to directly test the consistency of the data with axisymmetry by modelling each of the four quadrants separately. According to our dynamical models, consistent SMBH masses and dynamical Ks band mass-to-light ratios are obtained for all quadrants, with =1.3x10^8 M_\odot (rms(M_BH)=0.4x10^8 Msun) and =0.68 (rms(M/L)=0.03), confirming the assumption of axisymmetry. For the folded and averaged data we find M_BH=(1.5+0.75-0.8)x10^8 Msun and M/L=(0.65+0.075-0.05) (3-sigma errors). Thus the black-hole mass of Fornax A is consistent within the error with the Tremaine (2002) M-sigma relation, but is a factor ~4 smaller than expected from its bulge mass and the Marconi&Hunt (2003) relation., Comment: 24 pages, 24 figures, submitted to MNRAS
Published: 2008

26. Spectroscopy of clusters in the ESO distant cluster survey (EDisCS). II.. Redshifts, velocity dispersions, and substructure for clusters in the last 15 fields

Author: Stefan Noll, Pascale Jablonka, Bianca M. Poggianti, Roberto P. Saglia, Dennis Zaritsky, Douglas Clowe, Julianne J. Dalcanton, Claire Halliday, Steven P. Bamford, Gregory Rudnick, Roser Pello, Gabriella De Lucia, Nina Nowak, Simon D. M. White, Anja von der Linden, Luc Simard, John Moustakas, S. Poirier, Bo Milvang-Jensen, Alfonso Aragón-Salamanca, Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Department of Physics and Astronomy [Irvine], University of California [Irvine] (UCI), University of California-University of California, Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), University of California [Irvine] (UC Irvine), and University of California (UC)-University of California (UC)
Subjects: Digital Sky Survey, Stellar Populations, galaxies : evolution, media_common.quotation_subject, Red Sequence, Keck Spectroscopy, FOS: Physical sciences, Tully-Fisher Relation, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, galaxies : distances and redshifts, Cluster (physics), Astrophysics::Solar and Stellar Astrophysics, Spectroscopy, 010303 astronomy & astrophysics, Galaxy cluster, Astrophysics::Galaxy Astrophysics, media_common, Physics, 010308 nuclear & particles physics, Astrophysics (astro-ph), Astronomy and Astrophysics, Early-Type Galaxies, Star-Formation, Fundamental Plane, Redshift, Galaxy, Space and Planetary Science, Sky, galaxies: clusters: general, Substructure, galaxies : clusters : general, galaxies: distances and redshifts, galaxies: evolution, Rich Clusters, Southern Spectrophotometric Standards, Interpolation
Abstract: AIMS. We present spectroscopic observations of galaxies in 15 survey fields as part of the ESO Distant Cluster Survey (EDisCS). We determine the redshifts and velocity dispersions of the galaxy clusters located in these fields, and we test for possible substructure in the clusters. METHODS. We obtained multi-object mask spectroscopy using the FORS2 instrument at the VLT. We reduced the data with particular attention to the sky subtraction. We implemented the method of Kelson for performing sky subtraction prior to any rebinning/interpolation of the data. From the measured galaxy redshifts, we determine cluster velocity dispersions using the biweight estimator and test for possible substructure in the clusters using the Dressler-Shectman test. RESULTS. The method of subtracting the sky prior to any rebinning/interpolation of the data delivers photon-noise-limited results, whereas the traditional method of subtracting the sky after the data have been rebinned/interpolated results in substantially larger noise for spectra from tilted slits. Redshifts for individual galaxies are presented and redshifts and velocity dispersions are presented for 21 galaxy clusters. For the 9 clusters with at least 20 spectroscopically confirmed members, we present the statistical significance of the presence of substructure obtained from the Dressler-Shectman test, and substructure is detected in two of the clusters. CONCLUSIONS. Together with data from our previous paper, spectroscopy and spectroscopic velocity dispersions are now available for 26 EDisCS clusters with redshifts in the range 0.40-0.96 and velocity dispersions in the range 166-1080 km/s., Comment: 31 pages, 23 figures, accepted for publication in A&A
Published: 2008
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27. THE SINFONI BLACK HOLE SURVEY: THE BLACK HOLE FUNDAMENTAL PLANE REVISITED AND THE PATHS OF (CO)EVOLUTION OF SUPERMASSIVE BLACK HOLES AND BULGES

Author: Peter Erwin, Ralf Bender, X. Mazzalay, M. Fabricius, Michael Opitsch, Roberto P. Saglia, S. P. Rusli, Alessandra Beifiori, Jens Thomas, and Nina Nowak
Subjects: Physics, Supermassive black hole, 010308 nuclear & particles physics, FOS: Physical sciences, Sigma, Velocity dispersion, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics - Astrophysics of Galaxies, 01 natural sciences, Galaxy, Black hole, Space and Planetary Science, Bulge, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Fundamental plane (elliptical galaxies), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: We investigate the correlations between the black hole mass $M_{BH}$, the velocity dispersion $\sigma$, the bulge mass $M_{Bu}$, the bulge average spherical density $\rho_h$ and its spherical half mass radius $r_h$, constructing a database of 97 galaxies (31 core ellipticals, 17 power-law ellipticals, 30 classical bulges, 19 pseudo bulges) by joining 72 galaxies from the literature to 25 galaxies observed during our recent SINFONI black hole survey. For the first time we discuss the full error covariance matrix. We analyse the well known $M_{BH}-\sigma$ and $M_{BH}-M_{Bu}$ relations and establish the existence of statistically significant correlations between $M_{Bu}$ and $r_h$ and anti-correlations between $M_{Bu}$ and $\rho_h$. We establish five significant bivariate correlations ($M_{BH}-\sigma-\rho_h$, $M_{BH}-\sigma-r_h$, $M_{BH}-M_{Bu}-\sigma$, $M_{BH}-M_{Bu}-\rho_h$, $M_{BH}-M_{Bu}-r_h$) that predict $M_{BH}$ of 77 core and power-law ellipticals and classical bulges with measured and intrinsic scatter as small as $\approx 0.36$ dex and $\approx 0.33$ dex respectively, or 0.26 dex when the subsample of 45 galaxies defined by Kormendy and Ho (2013) is considered. In contrast, pseudo bulges have systematically lower $M_{BH}$, but approach the predictions of all the above relations at spherical densities $\rho_h\ge 10^{10} M_\odot/kpc^3$ or scale lengths $r_h\le 1$ kpc. These findings fit in a scenario of co-evolution of BH and classical-bulge masses, where core ellipticals are the product of dry mergers of power-law bulges and power-law Es and bulges the result of (early) gas-rich mergers and of disk galaxies. In contrast, the (secular) growth of BHs is decoupled from the growth of their pseudo bulge hosts, except when (gas) densities are high enough to trigger the feedback mechanism responsible for the existence of the correlations between $M_{BH}$ and galaxy structural parameters., Comment: Accepted for publication in ApJ, proofs corrected
Published: 2016
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28. Supermassive Black Holes in Galaxies

Author: Nina Nowak, J. Thomas, Roberto P. Saglia, Ralf Bender, and Roger L. Davies
Subjects: Physics, Black hole, Supermassive black hole, Binary black hole, Intermediate-mass black hole, Mass deficit, Primordial black hole, Stellar black hole, Astrophysics, Spin-flip
Published: 2007
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29. CHANDRA reveals galaxy cluster with the most massive nearby cooling core, RXCJ1504.1-0248

Author: Vadim Burwitz, Hans Boehringer, Nina Nowak, Y.-Y. Zhang, and Peter Schuecker
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Radius, Astrophysics::Cosmology and Extragalactic Astrophysics, Cooling flow, Luminosity, Core (optical fiber), Space and Planetary Science, Cluster (physics), Elliptical galaxy, Galaxy cluster, Order of magnitude, Astrophysics::Galaxy Astrophysics
Abstract: A CHANDRA follow-up observation of an X-ray luminous galaxy cluster with a compact appearance, RXCJ1504.1-0248 discovered in our REFLEX Cluster Survey, reveals an object with one of the most prominent cluster cooling cores. With a core radius of ~30 kpc smaller than the cooling radius with ~140 kpc more than 70% of the high X-ray luminosity of Lbol = 4.3 10e45 erg s-1 of this cluster is radiated inside the cooling radius. A simple modeling of the X-ray morphology of the cluster leads to a formal mass deposition rate within the classical cooling flow model of 1500 - 1900 Msun yr-1 (for h=0.7), and 2300 - 3000 Msun yr-1 (for h=0.5). The center of the cluster is marked by a giant elliptical galaxy which is also a known radio source. Thus it is very likely that we observe one of the interaction systems where the central cluster AGN is heating the cooling core region in a self-regulated way to prevent a massive cooling of the gas, similar to several such cases studied in detail in more nearby clusters. The interest raised by this system is then due to the high power recycled in RXCJ1504-0248 over cooling time scales which is about one order of magnitude higher than what occurs in the studied, nearby cooling core clusters. The cluster is also found to be very massive, with a global X-ray temperature of about 10.5 keV and a total mass of about 1.7 10e15 Msun inside 3 Mpc., accepted for publication in Astrophys. Journal, 10 figures
Published: 2005

30. X-ray galaxy clusters in the large-scale structure

Author: Nina Nowak, Hans Böhringer, M. Huber, P. Popesso, and Peter Schuecker
Subjects: Physics, Astronomy, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy, Galaxy groups and clusters, Space and Planetary Science, Galaxy group, Brightest cluster galaxy, Interacting galaxy, Lenticular galaxy, Astrophysics::Galaxy Astrophysics, Galaxy cluster, Dwarf galaxy
Abstract: In this contribution we investigate the connection between clusters of galaxies and their large-scale environment, with an emphasis on clusters which are well characterized by their X-ray emission. We show that this connection is so tight that clusters can be used as perfect tracers of the large-scale matter distribution and thus for cosmological tests. The correlation of the X-ray traced cluster mass and the optical luminosity of the galaxy content of clusters shows that the dark matter and galaxy distribution are tightly connected, but we also observe a scatter which is so far not well understood. We further explore the correlation of the galaxy population mix with the geometry of the large-scale structure features. On larger scales we also find correlations of the properties of galaxy clusters with the density of their large-scale structure environment. To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html
Published: 2004
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31. Black holes in low-mass bulges and pseudobulges

Author: Nina Nowak, J. Thomas, Peter Erwin, Roberto P. Saglia, and Ralf Bender
Subjects: Physics, Supermassive black hole, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Velocity dispersion, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Binary black hole, Space and Planetary Science, Bulge, Intermediate-mass black hole, Stellar black hole, Low Mass, Astrophysics::Galaxy Astrophysics
Abstract: Over the past decade we have learned that probably all ellipticals and bulges contain a central supermassive black hole (SMBH). The mass of the SMBH correlates both with the mass of the bulge component (about 0.15% of the bulge mass) and with the velocity dispersion σ of the bulge. We are investigating whether these relations remain valid or how they change when galaxies with pseudobulges, very low-mass bulges or bulgeless galaxies are considered. Studying SMBH relations for both classical bulges and pseudobulges can reveal the importance of different growing mechanisms (mergers vs. secular evolution) for the evolution of SMBHs. Low-mass classical bulges and bulgeless galaxies may harbour seed black holes in their earliest evolutionary stages, and studying them is of paramount importance for understanding the link between bulge evolution and black hole growth.
Published: 2007
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32. DEPLETED GALAXY CORES AND DYNAMICAL BLACK HOLE MASSES

Author: S. P. Rusli, Jens Thomas, M. Fabricius, Nina Nowak, Roberto P. Saglia, Ralf Bender, and Peter Erwin
Subjects: Physics, Supermassive black hole, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, Mass deficit, FOS: Physical sciences, Velocity dispersion, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Black hole, Stars, Space and Planetary Science, Surface brightness, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Shallow cores in bright, massive galaxies are commonly thought to be the result of scouring of stars by mergers of binary supermassive black holes. Past investigations have suggested correlations between the central black hole mass and the stellar light or mass deficit in the core, using proxy measurements of $M_{\rm BH}$ or stellar mass-to-light ratios ($\Upsilon$). Drawing on a wealth of dynamical models which provide both $M_{\rm BH}$ and $\Upsilon$, we identify cores in 23 galaxies, of which 20 have direct, reliable measurements of $M_{\rm BH}$ and dynamical stellar mass-to-light ratios ($\Upsilon_{\star,{\rm dyn}}$). These cores are identified and measured using Core-S\'ersic model fits to surface brightness profiles which extend out to large radii (typically more than the effective radius of the galaxy); for approximately one fourth of the galaxies, the best fit includes an outer (\sersic) envelope component. We find that the core radius is most strongly correlated with the black hole mass and that it correlates better with total galaxy luminosity than it does with velocity dispersion. The strong core-size-- $M_{\rm BH}$ correlation enables estimation of black hole masses (in core galaxies) with an accuracy comparable to the $M_{\rm BH}$--$\sigma$ relation (rms scatter of 0.30 dex in $\log M_{\rm BH}$), without the need for spectroscopy. The light and mass deficits correlate more strongly with galaxy velocity dispersion than they do with black hole mass. Stellar mass deficits span a range of 0.2--39 \mbh, with almost all (87%) being $< 10 \, M_{\rm BH}$; the median value is 2.2 $M_{\rm BH}$., Comment: Proof-corrected version, AJ, 146, 160, http://stacks.iop.org/1538-3881/146/160
Published: 2013
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33. MAGIC reveals a complex morphology within the unidentified gamma-ray source HESS J1857+026

Author: K. Frantzen, Tihomir Surić, P. Temnikov, Fabio Zandanel, Patrick Vogler, Daniel Ferenc, V. Kadenius, R. Zanin, S. Paiano, Karl Mannheim, Alicia López-Oramas, Natalia Lewandowska, M. V. Fonseca, A. La Barbera, A. Saggion, X. Paredes-Fortuny, M. Palatiello, Adrian Biland, Nina Nowak, I. Lozano, K. Nishijima, F. Borracci, G. De Caneva, I. Snidaric, Masahiro Teshima, Christian Fruck, Stefano Covino, J. Becerra González, E. Lorenz, U. Menzel, J. Rico, D. Dominis Prester, Francesco Dazzi, Mario Meucci, S. Sun, A. González Muñoz, Diego F. Torres, M. Uellenbeck, Dario Hrupec, Stefano Ansoldi, Riccardo Paoletti, L. A. Antonelli, D. Tescaro, A. Sillanpää, M. A. Lopez, S. Rügamer, Juan Abel Barrio, Fabrizio Tavecchio, Ll. Font, D. Garrido Terrats, M. Garczarczyk, D. Nakajima, Nikola Godinovic, Benito Marcote, J. Krause, Hajime Takami, B. De Lotto, Francisco Prada, Emanuele Paolo Farina, K. Saito, S. Klepser, Nijil Mankuzhiyil, P. Munar-Adrover, Silvia Preziuso, Wlodek Bednarek, Alessandro Carosi, J. M. Paredes, Antonio Stamerra, V. Scalzotto, L. Maraschi, Elina Lindfors, K. Kodani, Abelardo Moralejo, Daniel Mazin, T. Steinbring, Ruben Lopez-Coto, Jose Miguel Miranda, P. G. Prada Moroni, K. Mallot, Thomas Bretz, S. N. Shore, Hanna Kellermann, J. Storz, A. Herrero, R. J. García López, O. Tibolla, Ana Babić, M. I. Martínez, W. Idec, G. Maneva, A. De Angelis, C. Schultz, V. Scapin, Yusuke Konno, Felix Spanier, Aaron Dominguez, J. Kushida, R. Reinthal, S. Bonnefoy, Wolfgang Rhode, E. Colombo, Dominik Elsaesser, U. Barres de Almeida, Takashi Saito, Jose Luis Contreras, M. Hayashida, Damir Lelas, Sabrina Einecke, S. R. Gozzini, R. Mirzoyan, D. Eisenacher, L. O. Takalo, Giacomo Bonnoli, Dorota Sobczyńska, J. Rodriguez Garcia, Juan Cortina, Reiko Orito, E. Carmona, Mosè Mariotti, A.-K. Overkemping, Marc Ribó, Massimo Persic, P. Bangale, Hidetoshi Kubo, Marcel Strzys, E. Prandini, Saverio Lombardi, D. Hildebrand, Aldo Treves, Ivica Puljak, Kari Nilsson, Pierre Colin, Tomislav Terzić, E. de Oña Wilhelmi, Julia Thaele, T. Schweizer, P. Antoranz, D. Fidalgo Carreto, S. Partini, C. Delgado Mendez, Daniela Dorner, M. Gaug, J. Herrera, Koji Noda, Elisa Bernardini, Martin Makariev, Oscar Blanch, M. Doert, Victor Stamatescu, Julian Sitarek, J. Hose, Daniela Hadasch, T. Toyama, Jelena Aleksić, A. Niedzwiecki, David Paneque, P. Da Vela, Robert Wagner, Konstancja Satalecka, and Michele Doro
Subjects: Acceleration of particles - gamma rays, HII regions, PSR J1856+0245, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Individual, Astrophysics, 01 natural sciences, Power law, Pulsar wind nebula, ISM: clouds, Coincidence, Clouds - HII regions - ISM, HESS J1857+026 -pulsars, Individual objects, ISM - ISM, Astronomy and Astrophysics, Space and Planetary Science, gamma rays: ISM, Pulsar, 0103 physical sciences, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, acceleration of particles, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Physics, 010308 nuclear & particles physics, Molecular cloud, Gamma ray, Galactic plane, pulsars: individual: PSR J1856+0245, ISM: individual objects: HESS J1857+026, gamma-rays: ISM, Hii regions, ddc:520, Spectral energy distribution, Electrónica, Física nuclear, High Energy Physics::Experiment, Electricidad, Astrophysics - High Energy Astrophysical Phenomena
Abstract: HESS J1857+026 is an extended TeV gamma-ray source that was discovered by H.E.S.S. as part of its Galactic plane survey. Given its broadband spectral energy distribution and its spatial coincidence with the young energetic pulsar PSR J1856+0245, the source has been put forward as a pulsar wind nebula (PWN) candidate. MAGIC has performed follow-up observations aimed at mapping the source down to energies approaching 100 GeV in order to better understand its complex morphology. HESS J1857+026 was observed by MAGIC in 2010, yielding 29 hours of good quality stereoscopic data that allowed us to map the source region in two separate ranges of energy. We detected very-high-energy gamma-ray emission from HESS J1857+026 with a significance of $12 \sigma$ above $150$ GeV. The differential energy spectrum between $100$ GeV and $13$ TeV is well described by a power law function $dN/dE = N_0(E/1\textrm{TeV})^{-\Gamma}$ with $N_0 = (5.37 \pm0.44_{stat} \pm1.5_{sys}) \times 10^{-12} (\textrm{TeV}^{-1} \textrm{cm}^{-2}$ $\textrm{ s}^{-1})$ and $\Gamma = 2.16\pm0.07_{stat} \pm0.15_{sys}$, which bridges the gap between the GeV emission measured by Fermi-LAT and the multi-TeV emission measured by H.E.S.S.. In addition, we present a detailed analysis of the energy-dependent morphology of this region. We couple these results with archival multi-wavelength data and outline evidence in favor of a two-source scenario, whereby one source is associated with a PWN, while the other could be linked with a molecular cloud complex containing an HII region and a possible gas cavity., Comment: 9 pages, 6 figures. Accepted for publication in A&A
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34. Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

Author: K. Ziȩtara, A. Konopelko, J. Rico, Philippe Laporte, Tatsuo Yoshida, A. Etchegoyen, Dennis Haefner, C. Morello, L. Garrido, Philip Kaaret, T. Yamamoto, F. Di Pierro, Wystan Benbow, B. Sacco, T. O. B. Schmidt, T. Krähenbühl, N. Geffroy, I. M. McHardy, Toru Tanimori, A. Salini, F. Grañena, A. Liolios, A. C. Rovero, A. Mendes, Etienne Lyard, Juan Abel Barrio, Jürgen Schmoll, R. Dubois, A. N. Otte, J. Bolmont, S. Rivoire, K. Berger, A. Nikolaidis, J.-P. Ernenwein, A. Bobkov, D. Allan, C. Schultz, Masayuki Tanaka, G. Deleglise, Oliver Grimm, Ł. Płatos, O. Tibolla, M. Gochna, S. Schwarzburg, H. Arnaldi, Hiromitsu Takahashi, Valerie Connaughton, Adriano Fontana, D. Nedbal, P. Jean, Alejandro Ibarra, S. Spyrou, Gustavo E. Romero, Judith H. Croston, F. Feinstein, L. Tibaldo, M. Benallou, Shinji Hara, D. Florin, A. E. Szymkowiak, J.L. Van der Walt, Stefano Covino, Shigehiro Nagataki, G. Busetto, P. Nayman, G. Lamanna, William J. Potter, Tadashi Kifune, O. Corpace, M. Bourgeat, N. Webb, J. K. Becker, K. Hultquist, P. Majumdar, Anna Szostek, M. Compin, Petter Hofverberg, Dimitrios Emmanoulopoulos, J. Ingjald, R. Kossakowski, A. Mangano, Kunihito Ioka, Jonathan Granot, S. Buson, P. Manigot, J. M. Paredes, M. Gómez Berisso, Massimiliano Belluso, A. Kretzschmann, M. Stodulski, L. Venter, Artemio Herrero, Nu. Komin, German Hermann, Dorota Sobczyńska, Reinhard Schlickeiser, Akira Okumura, Felix Spanier, Gareth Hughes, J. Carr, Antonio Stamerra, Norita Kawanaka, T. Shibata, R. C. Shellard, Dieter H. H. Hoffmann, B. Yoffo, T. Dettlaff, R. G. Talbot, L. Fresnillo, A. Manalaysay, I. Jung, Kohta Murase, Geza Gyuk, C. Farnier, J. C. Marin, Julian Sitarek, Francesco Dazzi, H. Ohka, C. Skole, C. Ghag, Patrick Vogler, M. Hauser, M. Cailles, K. Nishijima, Yutaka Fujita, J. Berdugo, Luke O'c. Drury, Naoto Sakaki, F. Köck, P. Sutcliffe, Luis Ángel Tejedor, Hugh Dickinson, Denis Bastieri, Q. Weitzel, Ryoji Enomoto, Josep Colomé, Luigi Lessio, B. Peyaud, C. L. Naumann, Michael Punch, S. Rodriguez, Lucy Fortson, J. P. Osborne, J. Kotula, Piero Giubilato, J. Dyks, W. Kluźniak, T. Schweizer, M. Rataj, Allan Hallgren, Matthew Wood, David Gascon, M. Doert, R. Wawrzaszek, Daniela Hadasch, H. Castarede, P. Wawer, M. Kapala, J.-M. Reymond, A.A. Zdziarski, E. De Cea del Pozo, K. Farakos, D. Corti, A. St. J. Murphy, Mosè Mariotti, Kazutaka Yamaoka, T. C. Arlen, Christian Fruck, Francesco Russo, Stefano Gabici, T. Bernardino, B. Khélifi, B. Huber, T. Glanzman, J. Michałowski, Mark I. Wilkinson, M. Suchenek, Massimo Persic, I. Monteiro, M. I. Martínez, V. Sahakian, R. Firpo, Seth Digel, V. La Parola, F. Roy, Regis Terrier, E. Fokitis, E. de Oña Wilhelmi, D. Melkumyan, E. Edy, Stefano Basso, J. Knapp, Cameron B Rulten, A. Niedźwiecki, Karol Seweryn, Karl-Heinz Sulanke, B. Rudak, V. Scapin, R. Wischnewski, Ricardo Graciani, Gianluca Giavitto, Matthias Beilicke, K. Nakayama, Thomas Schanz, A. Sillanpää, G. Motta, Yoshiyuki Inoue, Elina Lindfors, Hannes Jensen, Henric Krawczynski, Catherine Boisson, C. Medina, Dinko Dimitrov, Karen Byrum, M. Shayduk, Gianpiero Tagliaferri, Richard White, Kazunori Kohri, I. Oya, T. Greenshaw, C. Olivetto, Tomasz Szepieniec, R. D. Parsons, Fuyuki Tokanai, Jerzy Grygorczuk, V. Scalzotto, S. Rosier-Lees, Dainis Dravins, Jacco Vink, Włodzimierz Piechocki, F. Stinzing, Felix Ryde, P. Ristori, N. A. McCubbin, M. Hayashida, Martin J. Hardcastle, G.W. Fraser, S. Paiano, S. Blake, U. Barres de Almeida, S. Federici, M. Corlier, C. J. Todero Peixoto, Łukasz Stawarz, Michael S. Briggs, Yvonne Becherini, Martin Pohl, Daniel Mazin, B. Decerprit, Yukikatsu Terada, J. F. Huppert, P. J. Rajda, Justin Vandenbroucke, S. Schlenstedt, S. Renner, Ł. Wiśniewski, Dieter Horns, T. B. Humensky, Takeshi Nakamori, Andreas Quirrenbach, Asdrúbal Enrique Bottani, P. Vallania, B. García, H. von Gunten, Alkiviadis F. Bais, Takashi Saito, Marcos Daniel Actis, Jacek Niemiec, W. Gäbele, C. van Eldik, Olaf Reimer, P. Corona, Robert D. Preece, C. Reimann, Pierre Brun, Thomas Bretz, R. Moderski, Eric Delagnes, Gilles Henri, W. Domainko, P. H. Tam, J. Schultze, A. Weinstein, M. Schroedter, A. Vollhardt, Stavros Maltezos, A. Wierzcholska, P. M. Chadwick, Fabrice Mottez, S. Steiner, M. Dyrda, S. Sun, Victor Stamatescu, M. Bogdan, Felix Aharonian, Hajime Takami, M. Winde, Evgeni Ovcharov, M. Panter, Shohei Yanagita, T. Jogler, Thomas Kihm, P. Micolon, S. J. Nolan, David A. Williams, Joachim Hahn, Q. Xiong, Nikolaos Stergioulas, J. Gaweda, R. Mirzoyan, Nektarios Vlahakis, J. Becerra, N. Fouque, M. Ribordy, V. Vassiliev, Claes Fransson, R. L. C. Starling, J. M. Huet, J. Ruppel, J.-P. Lenain, Enrico Giro, J. Ripken, T. Haubold, A. Lopatin, Joseph Silk, J. Borkowski, P. Lubinski, T. Le Flour, R. Platzer, A. Di Paolo, Reiko Orito, O. C. de Jager, C. Eleftheriadis, A. Gonzalez, T. J. L. McComb, U. Schwanke, S. Brau-Nogue, Yutaka Ohira, Philipp Mertsch, Daniel Ferenc, Maria Concetta Maccarone, F. Gonzalez, V. Golev, Osvaldo Catalano, V. Bugaev, C. Clerc, Michał Szanecki, C. Delgado, L. Pogosyan, M. Renaud, G. Pivato, Sabine Elles, E. J. Quel, R. J. García López, M. Videla, Stefan Funk, H. Vankov, A. Le Padellec, Michele Doro, Saverio Lombardi, S. Pita, A. Wolczko, G. Disset, U. Roeser, Abraham D. Falcone, I. Telezhinsky, S. Artmann, Pierre Colin, M. Chikawa, Daniela Dorner, G. Fontaine, Wolfgang Rhode, C. Baixeras, K. Mori, H. Prokoph, Giancarlo Cusumano, J. L. Dournaux, F. Toussenel, C. Dufour, Ilana M. Braun, Riccardo Paoletti, A. R. Knappy, Sergio Billotta, F. Krennrich, S. Karkar, Anne M. Green, Takanori Yoshikoshi, I. de la Calle Perez, Masahiro Teshima, M. Janiak, C. Stegmann, H. Wetteskind, Marco Tavani, Kostas D. Kokkotas, C. Föhr, J. L. Panazol, S. Cantu, C. Tenzer, I. Vegas, M. Grudzińska, Elisabetta Bissaldi, S. Bajtlik, A. Jacholkowska, P. Małkiewicz, M. Ostrowski, Reshmi Mukherjee, Mario Meucci, Tarek M. Hassan, W. Bednarek, Rodolfo Canestrari, Stefan Wagner, Teresa Mineo, N. Karlsson, M. Tluczykont, A. E. Suárez, David Kieda, R. Steenkamp, Grzegorz Kowal, C. Gasq, Loukas Vlahos, Kathrin Egberts, K. Kosack, A. D. Supanitsky, Hernán Asorey, Adriano Ghedina, Frank M. Rieger, P. Zychowski, J. Bähr, P. Wegner, P. Ziółkowski, Shigeto Kabuki, G. Papyan, Dario Hrupec, P. T. O'Brien, Oscar Blanch, Tsunefumi Mizuno, Robert Wagner, Thomas Lohse, Susumu Inoue, U. Straumann, J. Kushida, Jose Luis Contreras, C. Maña, Matteo Cerruti, P. Antoranz, Ll. Font, R. Sugawara, M. Casiraghi, C. Kalkuhl, Subir Sarkar, Jelena Aleksić, Juan Cortina, J. Pallota, L. Brunetti, Petar Temnikov, Tomasz Bulik, L. O. Takalo, G. Vasileiadis, Riccardo Rando, J. H. Buckley, V. de Souza, Sera Markoff, G. Pareschi, P. Kostka, J. Grube, M. Tokarz, Manel Errando, David Fink, C. Barbier, Marek Sikora, J. P. Tavernet, Yasushi Fukazawa, Werner Hofmann, K. Takahashi, B. Wagner, David Paneque, M. Barcelo, L. Guglielmi, S. Royer, Rika Hagiwara, Nestor Mirabal, R. A. Cameron, R. Walter, G. De La Vega, Jim Hinton, Garret Cotter, M. Sofo Haro, Peter Walter, R. Gredig, S. Vorobiov, A. Bouvier, B. Lieunard, V. A. Kudryavtsev, Mauro Ghigo, John H. Seiradakis, Konrad Bernlöhr, M. de Naurois, A. Yoshida, F. Sánchez, K. Katarzyński, C. Veyssiere, Leszek Bogacz, B. Moal, A. Reimer, J. Koziol, Thomas J. Maccarone, G. Pojmanski, E. Carmona, C. Bauer, Andreu Sanuy, V. J. Guarino, Marc Ribó, Vincenzo Testa, H. Huan, C. Jablonski, Tsuguya Naito, C. Lavalley, M. Karczewski, G. Agnetta, Giovanni Bonanno, A. Zajczyk, C. Díaz, J. Kasperek, E. Lorenz, P. Vincent, K. Saito, S. Cazaux, S. Selmane, B. Kȩdziora, Y. A. Gallant, Serena Mattiazzo, Emilio Molinari, N. La Barbera, Hidetoshi Kubo, M. K. Daniel, Katsuaki Asano, Tanyu Bonev, A. Cillis, L. A. Otero, Gernot Maier, M. Cieślar, M. Ciesielska, Shuichi Gunji, E. Gianakaki, E. M. de Gouveia Dal Pino, Apostolos Mastichiadis, S. P. Wakely, G. La Rosa, C. Boutonnet, V. Zitelli, I. Ochoa, M. Raue, E. Fillin-Martino, Ingomar Allekotte, J. P. Vialle, G. Vallejo, Ryo Yamazaki, C. Tchernin, Anna Barnacka, Andrea Santangelo, P. Ringegni, James Chiang, Aya Bamba, B. Giebels, A. Förster, Heide Costantini, N. Galante, R. S. Warwick, Michiko Ohishi, O. Reimann, Guillaume Dubus, K. Kodani, Olga Botner, Andreas Zech, Paolo De Coppi, Louis Antonelli, A. Pepato, A. De Angelis, M. Scarcioffolo, E. M. Santos, Christoph Deil, T. Bird, T. Kneiske, Daniele Spiga, B. Behera, Jürgen Knödlseder, L. Rob, G. Pedaletti, P. Munar, J.F. Glicenstein, Aris Karastergiou, A. Djannati-Ataï, B. Courty, R. A. Ong, J. Dick, Paolo Conconi, S. Giarrusso, G. Maneva, E. Salazar, A. Saggion, E. Birsin, Adrian Biland, Markus Gaug, Gino Tosti, M. Á. Sánchez Conde, Abelardo Moralejo, Chad Finley, J. D. Ponz, Hideaki Katagiri, A. M. Lopez, G. Pühlhofer, M. Yonetani, Emmanuel Moulin, E. Aliu, R. Kankanyan, Hiroyasu Tajima, F. Mirabel, Jan Conrad, R. Sternberger, Diego F. Torres, P.H. Carton, P.-O. Petrucci, L. Sapozhnikov, A. Schulz, J. Krause, B. De Lotto, J. P. Finley, J. Boix, Volker Beckmann, S. Klepser, Jun Kakuwa, Dimitris Balis, Hironori Matsumoto, R. Welsing, Matthew R. Orr, Dominique Durand, O. Luz, Nina Nowak, J. M. Illa, A. Aravantinos, P. Romano, A. Oziȩbło, Alessandro Carosi, Keith Bechtol, Elisa Prandini, S. Cavazzani, A. Zagdański, Francesca Volpe, Helene Sol, Ryan Heller, S. Vercellone, A. Bonardi, D. Garrido, Jose Miguel Miranda, Jürgen Barnstedt, Hiroshi Muraishi, Nathan Smith, D. Naumann, German Martinez, F.C. Antico, Kenji Toma, B. Cerruti, S. Couturier, R. Bühler, A. Gadola, F. Guilloux, M. Paz Arribas, F. Dubois, Victor Zabalza, A. G. Akhperjanian, Eckhard Kendziorra, Tomonori Totani, Universitat de Barcelona, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), APC - Astrophysique des Hautes Energies (APC - AHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-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, 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), CTA, High Energy Astrophys. & Astropart. Phys (API, FNWI), CTA Collaboration, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), M., Acti, G., Agnetta, F., Aharonian, A., Akhperjanian, J., Aleksic, E., Aliu, D., Allan, I., Allekotte, F., Antico, L. A., Antonelli, P., Antoranz, A., Aravantino, T., Arlen, H., Arnaldi, S., Artmann, K., Asano, H., Asorey, J., Baehr, A., Bai, C., Baixera, S., Bajtlik, D., Bali, A., Bamba, C., Barbier, M., Barcelo, A., Barnacka, J., Barnstedt, U. B., De, J. A., Barrio, S., Basso, D., Bastieri, C., Bauer, J., Becerra, Y., Becherini, K., Bechtol, J., Becker, V., Beckmann, W., Bednarek, B., Behera, M., Beilicke, M., Belluso, M., Benallou, W., Benbow, J., Berdugo, K., Berger, T., Bernardino, K., Bernloehr, A., Biland, S., Billotta, T., Bird, E., Birsin, Bissaldi, Elisabetta, S., Blake, O., Blanch, A. A., Bobkov, L., Bogacz, M., Bogdan, C., Boisson, J., Boix, J., Bolmont, G., Bonanno, A., Bonardi, T., Bonev, J., Borkowski, O., Botner, A., Bottani, M., Bourgeat, C., Boutonnet, A., Bouvier, S., Brau Nogue, I., Braun, T., Bretz, M. S., Brigg, P., Brun, L., Brunetti, H., Buckley, V., Bugaev, R., Buehler, T., Bulik, G., Busetto, S., Buson, K., Byrum, M., Caille, R., Cameron, R., Canestrari, S., Cantu, E., Carmona, A., Carosi, J., Carr, P. H., Carton, M., Casiraghi, H., Castarede, O., Catalano, S., Cavazzani, S., Cazaux, B., Cerruti, M., Cerruti, M., Chadwick, J., Chiang, M., Chikawa, M., Cieslar, M., Ciesielska, A., Cilli, C., Clerc, P., Colin, J., Colome, M., Compin, P., Conconi, V., Connaughton, J., Conrad, J. L., Contrera, P., Coppi, M., Corlier, P., Corona, O., Corpace, D., Corti, J., Cortina, H., Costantini, G., Cotter, B., Courty, S., Couturier, S., Covino, J., Croston, G., Cusumano, M. K., Daniel, F., Dazzi, A., Deangeli, E. d., Cea, E. M., De, O. d., Jager, I. d., La, G. D., La, B. D., Lotto, M. d., Nauroi, E. d., Ona, V. d., Souza, B., Decerprit, C., Deil, E., Delagne, G., Deleglise, C., Delgado, T., Dettlaff, A. D., Paolo, F. D., Pierro, C., Diaz, J., Dick, H., Dickinson, S. W., Digel, D., Dimitrov, G., Disset, A., Djannati Ata, M., Doert, W., Domainko, D., Dorner, M., Doro, J. . ., L., D., Dravin, L., Drury, F., Duboi, R., Duboi, G., Dubu, C., Dufour, D., Durand, J., Dyk, M., Dyrda, E., Edy, K., Egbert, C., Eleftheriadi, S., Elle, D., Emmanoulopoulo, R., Enomoto, J. . ., P., M., Errando, A., Etchegoyen, A. D., Falcone, K., Farako, C., Farnier, S., Federici, F., Feinstein, D., Ferenc, E., Fillin Martino, D., Fink, C., Finley, J. P., Finley, R., Firpo, D., Florin, C., Foehr, E., Fokiti, L., Font, G., Fontaine, A., Fontana, A., Foerster, L., Fortson, N., Fouque, C., Fransson, G. W., Fraser, L., Fresnillo, C., Fruck, Y., Fujita, Y., Fukazawa, S., Funk, W., Gaebele, S., Gabici, A., Gadola, N., Galante, Y., Gallant, B., Garcia, R. J., Garcia, D., Garrido, L., Garrido, D., Gascon, C., Gasq, M., Gaug, J., Gaweda, N., Geffroy, C., Ghag, A., Ghedina, M., Ghigo, E., Gianakaki, S., Giarrusso, G., Giavitto, B., Giebel, E., Giro, P., Giubilato, T., Glanzman, J. . ., F., M., Gochna, V., Golev, M. G., Berisso, A., Gonzalez, F., Gonzalez, F., Granena, R., Graciani, J., Granot, R., Gredig, A., Green, T., Greenshaw, O., Grimm, J., Grube, M., Grudzinska, J., Grygorczuk, V., Guarino, L., Guglielmi, F., Guilloux, S., Gunji, G., Gyuk, D., Hadasch, D., Haefner, R., Hagiwara, J., Hahn, A., Hallgren, S., Hara, M. J., Hardcastle, T., Hassan, T., Haubold, M., Hauser, M., Hayashida, R., Heller, G., Henri, G., Hermann, A., Herrero, J. A., Hinton, D., Hoffmann, W., Hofmann, P., Hofverberg, D., Horn, D., Hrupec, H., Huan, B., Huber, J. . ., M., G., Hughe, K., Hultquist, T. B., Humensky, A., Ibarra, J. M., Illa, J., Ingjald, S., Inoue, Y., Inoue, K., Ioka, C., Jablonski, A., Jacholkowska, M., Janiak, P., Jean, H., Jensen, T., Jogler, I., Jung, P., Kaaret, S., Kabuki, J., Kakuwa, C., Kalkuhl, R., Kankanyan, M., Kapala, A., Karastergiou, M., Karczewski, S., Karkar, N., Karlsson, J., Kasperek, H., Katagiri, K., Katarzynski, N., Kawanaka, B., Kedziora, E., Kendziorra, B., Khelifi, D., Kieda, T., Kifune, T., Kihm, S., Klepser, W., Kluzniak, J., Knapp, A. R., Knappy, T., Kneiske, J., Knoedlseder, F., Koeck, K., Kodani, K., Kohri, K., Kokkota, N., Komin, A., Konopelko, K., Kosack, R., Kossakowski, P., Kostka, J., Kotula, G., Kowal, J., Koziol, T., Kraehenbuehl, J., Krause, H., Krawczynski, F., Krennrich, A., Kretzschmann, H., Kubo, V. A., Kudryavtsev, J., Kushida, N. L., Barbera, V. L., Parola, G. L., Rosa, A., Lopez, G., Lamanna, P., Laporte, C., Lavalley, T. L., Flour, A. L., Padellec, L., Lessio, B., Lieunard, E., Lindfor, A., Liolio, T., Lohse, S., Lombardi, A., Lopatin, E., Lorenz, P., Lubinski, O., Luz, E., Lyard, M. C., Maccarone, T., Maccarone, G., Maier, P., Majumdar, S., Maltezo, P., Malkiewicz, C., Mana, A., Manalaysay, G., Maneva, A., Mangano, P., Manigot, J., Marin, M., Mariotti, S., Markoff, G., Martinez, M., Martinez, A., Mastichiadi, H., Matsumoto, S., Mattiazzo, D., Mazin, T. J., L., N., Mccubbin, I., Mchardy, C., Medina, D., Melkumyan, A., Mende, P., Mertsch, M., Meucci, J., Michalowski, P., Micolon, T., Mineo, N., Mirabal, F., Mirabel, J. M., Miranda, R., Mirzoyan, T., Mizuno, B., Moal, R., Moderski, E., Molinari, I., Monteiro, A., Moralejo, C., Morello, K., Mori, G., Motta, F., Mottez, E., Moulin, R., Mukherjee, P., Munar, H., Muraishi, K., Murase, A. S., Murphy, S., Nagataki, T., Naito, T., Nakamori, K., Nakayama, C., Naumann, D., Naumann, P., Nayman, D., Nedbal, A., Niedzwiecki, J., Niemiec, A., Nikolaidi, K., Nishijima, S. J., Nolan, N., Nowak, P. T., O'Brien, I., Ochoa, Y., Ohira, M., Ohishi, H., Ohka, A., Okumura, C., Olivetto, R. A., Ong, R., Orito, M., Orr, J. P., Osborne, M., Ostrowski, L., Otero, A. N., Otte, E., Ovcharov, I., Oya, A., Ozieblo, S., Paiano, J., Pallota, J. L., Panazol, D., Paneque, M., Panter, R., Paoletti, G., Papyan, J. M., Parede, G., Pareschi, R. D., Parson, M. P., Arriba, G., Pedaletti, A., Pepato, M., Persic, P. O., Petrucci, B., Peyaud, W., Piechocki, S., Pita, G., Pivato, L., Plato, R., Platzer, L., Pogosyan, M., Pohl, G., Pojmanski, J. D., Ponz, W., Potter, E., Prandini, R., Preece, H., Prokoph, G., Puehlhofer, M., Punch, E., Quel, A., Quirrenbach, P., Rajda, R., Rando, M., Rataj, M., Raue, C., Reimann, O., Reimann, A., Reimer, O., Reimer, M., Renaud, S., Renner, W., Rhode, M., Ribo, M., Ribordy, J., Rico, F., Rieger, P., Ringegni, J., Ripken, P., Ristori, S., Rivoire, L., Rob, S., Rodriguez, U., Roeser, P., Romano, G. E., Romero, S., Rosier Lee, A. C., Rovero, F., Roy, S., Royer, B., Rudak, C. B., Rulten, J., Ruppel, F., Russo, F., Ryde, B., Sacco, A., Saggion, V., Sahakian, K., Saito, T., Saito, N., Sakaki, E., Salazar, A., Salini, F., Sanchez, M. A., Sanchez, A., Santangelo, E. M., Santo, A., Sanuy, L., Sapozhnikov, S., Sarkar, V., Scalzotto, V., Scapin, M., Scarcioffolo, T., Schanz, S., Schlenstedt, R., Schlickeiser, T., Schmidt, J., Schmoll, M., Schroedter, C., Schultz, J., Schultze, A., Schulz, U., Schwanke, S., Schwarzburg, T., Schweizer, J., Seiradaki, S., Selmane, K., Seweryn, M., Shayduk, R. C., Shellard, T., Shibata, M., Sikora, J., Silk, A., Sillanpaa, J., Sitarek, C., Skole, N., Smith, D., Sobczynska, M. S., Haro, H., Sol, F., Spanier, D., Spiga, S., Spyrou, V., Stamatescu, A., Stamerra, R. L., C., L., Stawarz, R., Steenkamp, C., Stegmann, S., Steiner, N., Stergioula, R., Sternberger, F., Stinzing, M., Stodulski, U., Straumann, A., Suarez, M., Suchenek, R., Sugawara, K. H., Sulanke, S., Sun, A. D., Supanitsky, P., Sutcliffe, M., Szanecki, T., Szepieniec, A., Szostek, A., Szymkowiak, G., Tagliaferri, H., Tajima, H., Takahashi, K., Takahashi, L., Takalo, H., Takami, R. G., Talbot, P. H., Tam, M., Tanaka, T., Tanimori, M., Tavani, C., Tchernin, L. A., Tejedor, I., Telezhinsky, P., Temnikov, C., Tenzer, Y., Terada, R., Terrier, M., Teshima, V., Testa, L., Tibaldo, O., Tibolla, M., Tluczykont, C. J., Todero, F., Tokanai, M., Tokarz, K., Toma, D. F., Torre, G., Tosti, T., Totani, F., Toussenel, P., Vallania, G., Vallejo, J. v., Der, C. v., Eldik, J., Vandenbroucke, H., Vankov, G., Vasileiadi, V. V., Vassiliev, I., Vega, L., Venter, S., Vercellone, C., Veyssiere, J. P., Vialle, M., Videla, P., Vincent, J., Vink, N., Vlahaki, L., Vlaho, P., Vogler, A., Vollhardt, F., Volpe, H. P., Von, S., Vorobiov, S., Wagner, R. M., Wagner, B., Wagner, S. P., Wakely, P., Walter, R., Walter, R., Warwick, P., Wawer, R., Wawrzaszek, N., Webb, P., Wegner, A., Weinstein, Q., Weitzel, R., Welsing, H., Wetteskind, R., White, A., Wierzcholska, M. I., Wilkinson, D. A., William, M., Winde, R., Wischnewski, L., Wisniewski, A., Wolczko, M., Wood, Q., Xiong, T., Yamamoto, K., Yamaoka, R., Yamazaki, S., Yanagita, B., Yoffo, M., Yonetani, A., Yoshida, T., Yoshida, T., Yoshikoshi, V., Zabalza, A., Zagdanski, A., Zajczyk, A., Zdziarski, A., Zech, K., Zietara, P., Ziolkowski, V., Zitelli, and P., Zychowski
Subjects: Next generation Cherenkov telescopes, Ciencias Astronómicas, IACT, next generation Cherenkov telescopes, 01 natural sciences, 7. Clean energy, Design concepts, Ground based gamma ray astronomy, Observatory, Gamma ray astronomy, Instruments astronòmics, Ingeniería Aeronáutica, 010303 astronomy & astrophysics, media_common, Physics, Bursts, Radiation, Settore FIS/01 - Fisica Sperimentale, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma-ray astronomy, Particles, Electrónica, Física nuclear, Magic Telescope, design concepts, Electricidad, Simulation, GAMMA-RAY PULSARS, Optical-System, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], ATMOSPHERIC CHERENKOV TELESCOPE, VHE Gamma ray, QUASAR, cosmic rays, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Partícules (Física nuclear), 0103 physical sciences, Astronomia de raigs gamma, 14. Life underwater, 1St Detection, Cherenkov radiation, Particles (Nuclear physics), Astroparticle physics, Telescopis, 010308 nuclear & particles physics, Institut für Physik und Astronomie, Astronomy, Astronomical instruments, Astronomy and Astrophysics, ASTROFÍSICA, Cosmic-Rays, Cherenkov Telescope Array, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Induced Air-Showers, Space and Planetary Science, Sky, Next generation Cherenkov telescope, Tev, ground based gamma ray astronomy, Telescopes
Abstract: Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in astrophysics, particle physics and cosmology. CTA is an international initiative to build the next generation instrument, with a factor of 5-10 improvement in sensitivity in the 100 GeV-10 TeV range and the extension to energies well below 100 GeV and above 100 TeV. CTA will consist of two arrays (one in the north, one in the south) for full sky coverage and will be operated as open observatory. The design of CTA is based on currently available technology. This document reports on the status and presents the major design concepts of CTA., La lista completa de autores que integran el documento puede consultarse en el archivo., Departamento de Aeronáutica, Facultad de Ingeniería, Instituto Argentino de Radioastronomía, Facultad de Ciencias Astronómicas y Geofísicas
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34 results on '"Nina Nowak"'

1. MAGIC upper limits on the GRB 090102 afterglow

2. Molecular gas in the centre of nearby galaxies from VLT/SINFONI integral field spectroscopy – I. Morphology and mass inventory★

3. The central black hole mass of the high-σ but low-bulge-luminosity lenticular galaxy NGC 1332★

4. Do black hole masses scale with classical bulge luminosities only? The case of the two composite pseudo-bulge galaxies NGC 3368 and NGC 3489★

5. First broadband characterization and redshift determination of the VHE blazar MAGIC J2001+439

6. Discovery of very high energy gamma-ray emission from the blazar 1ES 0033+595 by the MAGIC telescopes

7. MAGIC search for vhe γ-ray emission from ae aquarii in a multiwavelength context

8. The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II)\\ II. Construction and Properties of the Survey

9. Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes

10. Optimized dark matter searches in deep observations of Segue 1 with MAGIC

11. MAGIC long-term study of the distant TeV blazar PKS 1424+240 in a multiwavelength context

12. Using 3D Spectroscopy to Probe the Orbital Structure of Composite Bulges

13. Contemporaneous observations of the radio galaxy NGC 1275 from radio to very high energy gamma-rays

14. Very high energy gamma-ray observation of the peculiar transient event Swift J1644+57 with the MAGIC telescopes and AGILE

15. Introducing the CTA concept

16. Rapid and multi-band variability of the TeV-bright active nucleus of the galaxy IC 310

17. The extended ROSAT-ESO Flux Limited X-ray Galaxy Cluster Survey (REFLEX II) III. Construction of the first flux-limited supercluster sample

18. Observations of the magnetars 4U 0142+61 and 1E 2259+586 with the MAGIC telescopes

19. Discovery of VHE gamma-rays from the blazar 1ES 1215+303 with the MAGIC Telescopes and simultaneous multi-wavelength observations

20. Phase-resolved energy spectra of the Crab pulsar in the range of 50-400 GeV measured with the MAGIC telescopes

21. Morphological and spectral properties of the W51 region measured with the MAGIC telescopes

22. Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501

23. Detection of very-high energy gamma-ray emission from NGC 1275 by the MAGIC telescopes

24. Constraining cosmic rays and magnetic fields in the Perseus galaxy cluster with TeV observations by the MAGIC telescopes

25. The supermassive black hole of Fornax A

26. Spectroscopy of clusters in the ESO distant cluster survey (EDisCS). II.. Redshifts, velocity dispersions, and substructure for clusters in the last 15 fields

27. THE SINFONI BLACK HOLE SURVEY: THE BLACK HOLE FUNDAMENTAL PLANE REVISITED AND THE PATHS OF (CO)EVOLUTION OF SUPERMASSIVE BLACK HOLES AND BULGES

28. Supermassive Black Holes in Galaxies

29. CHANDRA reveals galaxy cluster with the most massive nearby cooling core, RXCJ1504.1-0248

30. X-ray galaxy clusters in the large-scale structure

31. Black holes in low-mass bulges and pseudobulges

32. DEPLETED GALAXY CORES AND DYNAMICAL BLACK HOLE MASSES

33. MAGIC reveals a complex morphology within the unidentified gamma-ray source HESS J1857+026

34. Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

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