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3. The Fermi–LAT Galactic Center Excess: Evidence of Annihilating Dark Matter?

Author

S. Murgia

Subjects
Physics, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Galactic Center, Dark matter, Center (algebra and category theory), Astrophysics, Signal, Galaxy, Prime (order theory), Fermi Gamma-ray Space Telescope
Abstract

The center of the Galaxy is one of the prime targets in the search for a signal of annihilating (or decaying) dark matter. If such a signal were to be detected, it would shed light on one of the biggest mysteries in physics today: What is dark matter? Fundamental properties of the particle nature of dark matter, such as its mass, annihilation cross section, and annihilation final states, could be measured for the first time. Several experiments have searched for such a signal, and some have measured excesses that are compatible with it. A long-standing and compelling excess is observed in γ-rays by the Fermi Large Area Telescope ( Fermi–LAT). This excess is consistent with a dark matter particle with a mass of approximately 50 (up to ∼200) GeV annihilating with a velocity-averaged cross section of ∼10−26 cm3 s−1. Although a dark matter origin of the excess remains viable, other interpretations are possible. In particular, there is some evidence that the excess is produced by a population of unresolved point sources of γ-rays—for example, millisecond pulsars. In this article, I review the current status of the observation of the Fermi–LAT Galactic center excess, the possible interpretations of the excess, the evidence and counterevidence for each, and the prospects for resolving its origin with future measurements.

Published
2020

5. Search for Spectral Irregularities due to Photon–Axionlike-Particle Oscillations with the Fermi Large Area Telescope

Author

M. Ajello, A. Albert, B. Anderson, L. Baldini, G. Barbiellini, D. Bastieri, R. Bellazzini, E. Bissaldi, R. D. Blandford, E. D. Bloom, R. Bonino, E. Bottacini, J. Bregeon, P. Bruel, R. Buehler, G. A. Caliandro, R. A. Cameron, M. Caragiulo, P. A. Caraveo, C. Cecchi, A. Chekhtman, S. Ciprini, J. Cohen-Tanugi, J. Conrad, F. Costanza, F. D’Ammando, A. de Angelis, F. de Palma, R. Desiante, M. Di Mauro, L. Di Venere, A. Domínguez, P. S. Drell, C. Favuzzi, W. B. Focke, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Giglietto, T. Glanzman, G. Godfrey, S. Guiriec, D. Horan, G. Jóhannesson, M. Katsuragawa, S. Kensei, M. Kuss, S. Larsson, L. Latronico, J. Li, L. Li, F. Longo, F. Loparco, P. Lubrano, G. M. Madejski, S. Maldera, A. Manfreda, M. Mayer, M. N. Mazziotta, M. Meyer, P. F. Michelson, N. Mirabal, T. Mizuno, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, M. Negro, E. Nuss, C. Okada, E. Orlando, J. F. Ormes, D. Paneque, J. S. Perkins, M. Pesce-Rollins, F. Piron, G. Pivato, T. A. Porter, S. Rainò, R. Rando, M. Razzano, A. Reimer, M. Sánchez-Conde, C. Sgrò, D. Simone, E. J. Siskind, F. Spada, G. Spandre, P. Spinelli, H. Takahashi, J. B. Thayer, D. F. Torres, G. Tosti, E. Troja, Y. Uchiyama, K. S. Wood, M. Wood, G. Zaharijas, and S. Zimmer

Published
2016
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6. Resolving the Extragalacticγ-Ray Background above 50 GeV with the Fermi Large Area Telescope

Author

M. Ackermann, M. Ajello, A. Albert, W. B. Atwood, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, E. Bissaldi, R. D. Blandford, E. D. Bloom, R. Bonino, J. Bregeon, R. J. Britto, P. Bruel, R. Buehler, G. A. Caliandro, R. A. Cameron, M. Caragiulo, P. A. Caraveo, E. Cavazzuti, C. Cecchi, E. Charles, A. Chekhtman, J. Chiang, G. Chiaro, S. Ciprini, J. Cohen-Tanugi, L. R. Cominsky, F. Costanza, S. Cutini, F. D’Ammando, A. de Angelis, F. de Palma, R. Desiante, S. W. Digel, M. Di Mauro, L. Di Venere, A. Domínguez, P. S. Drell, C. Favuzzi, S. J. Fegan, E. C. Ferrara, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Giglietto, P. Giommi, F. Giordano, M. Giroletti, G. Godfrey, D. Green, I. A. Grenier, S. Guiriec, E. Hays, D. Horan, G. Iafrate, T. Jogler, G. Jóhannesson, M. Kuss, G. La Mura, S. Larsson, L. Latronico, J. Li, L. Li, F. Longo, F. Loparco, B. Lott, M. N. Lovellette, P. Lubrano, G. M. Madejski, J. Magill, S. Maldera, A. Manfreda, M. Mayer, M. N. Mazziotta, P. F. Michelson, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, M. Negro, E. Nuss, T. Ohsugi, C. Okada, N. Omodei, E. Orlando, J. F. Ormes, D. Paneque, J. S. Perkins, M. Pesce-Rollins, V. Petrosian, F. Piron, G. Pivato, T. A. Porter, S. Rainò, R. Rando, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, T. Reposeur, R. W. Romani, M. Sánchez-Conde, J. Schmid, A. Schulz, C. Sgrò, D. Simone, E. J. Siskind, F. Spada, G. Spandre, P. Spinelli, D. J. Suson, H. Takahashi, J. B. Thayer, L. Tibaldo, D. F. Torres, E. Troja, G. Vianello, M. Yassine, and S. Zimmer

Published
2016
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7. Measurement of the high-energy gamma-ray emission from the Moon with the Fermi Large Area Telescope

Author

M. Ackermann, M. Ajello, A. Albert, W. B. Atwood, L. Baldini, G. Barbiellini, D. Bastieri, R. Bellazzini, E. Bissaldi, R. D. Blandford, R. Bonino, E. Bottacini, J. Bregeon, P. Bruel, R. Buehler, G. A. Caliandro, R. A. Cameron, M. Caragiulo, P. A. Caraveo, E. Cavazzuti, C. Cecchi, A. Chekhtman, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen-Tanugi, F. Costanza, A. Cuoco, S. Cutini, F. D’Ammando, A. de Angelis, F. de Palma, R. Desiante, S. W. Digel, L. Di Venere, P. S. Drell, C. Favuzzi, S. J. Fegan, W. B. Focke, A. Franckowiak, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, I. A. Grenier, J. E. Grove, S. Guiriec, A. K. Harding, J. W. Hewitt, D. Horan, X. Hou, G. Iafrate, G. Jóhannesson, T. Kamae, M. Kuss, S. Larsson, L. Latronico, J. Li, L. Li, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, J. Magill, S. Maldera, A. Manfreda, M. Mayer, M. N. Mazziotta, P. F. Michelson, W. Mitthumsiri, T. Mizuno, M. E. Monzani, A. Morselli, S. Murgia, E. Nuss, N. Omodei, E. Orlando, J. F. Ormes, D. Paneque, J. S. Perkins, M. Pesce-Rollins, V. Petrosian, F. Piron, G. Pivato, S. Rainò, R. Rando, M. Razzano, A. Reimer, O. Reimer, T. Reposeur, C. Sgrò, E. J. Siskind, F. Spada, G. Spandre, P. Spinelli, H. Takahashi, J. B. Thayer, D. J. Thompson, L. Tibaldo, D. F. Torres, G. Tosti, E. Troja, G. Vianello, B. L. Winer, K. S. Wood, M. Yassine, F. Cerutti, A. Ferrari, and P. R. Sala

Published
2016
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8. Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data

Author

M. Ackermann, A. Albert, B. Anderson, W. B. Atwood, L. Baldini, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, E. Bissaldi, R. D. Blandford, E. D. Bloom, R. Bonino, E. Bottacini, T. J. Brandt, J. Bregeon, P. Bruel, R. Buehler, G. A. Caliandro, R. A. Cameron, R. Caputo, M. Caragiulo, P. A. Caraveo, C. Cecchi, E. Charles, A. Chekhtman, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, A. Cuoco, S. Cutini, F. D’Ammando, A. de Angelis, F. de Palma, R. Desiante, S. W. Digel, L. Di Venere, P. S. Drell, A. Drlica-Wagner, R. Essig, C. Favuzzi, S. J. Fegan, E. C. Ferrara, W. B. Focke, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, G. A. Gomez-Vargas, I. A. Grenier, S. Guiriec, M. Gustafsson, E. Hays, J. W. Hewitt, D. Horan, T. Jogler, G. Jóhannesson, M. Kuss, S. Larsson, L. Latronico, J. Li, L. Li, M. Llena Garde, F. Longo, F. Loparco, P. Lubrano, D. Malyshev, M. Mayer, M. N. Mazziotta, J. E. McEnery, M. Meyer, P. F. Michelson, T. Mizuno, A. A. Moiseev, M. E. Monzani, A. Morselli, S. Murgia, E. Nuss, T. Ohsugi, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, J. S. Perkins, M. Pesce-Rollins, F. Piron, G. Pivato, T. A. Porter, S. Rainò, R. Rando, M. Razzano, A. Reimer, O. Reimer, S. Ritz, M. Sánchez-Conde, A. Schulz, N. Sehgal, C. Sgrò, E. J. Siskind, F. Spada, G. Spandre, P. Spinelli, L. Strigari, H. Tajima, H. Takahashi, J. B. Thayer, L. Tibaldo, D. F. Torres, E. Troja, G. Vianello, M. Werner, B. L. Winer, K. S. Wood, M. Wood, G. Zaharijas, and S. Zimmer

Published
2015
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9. Updated search for spectral lines from Galactic dark matter interactions with pass 8 data from the Fermi Large Area Telescope

Author

M. Ackermann, M. Ajello, A. Albert, B. Anderson, W. B. Atwood, L. Baldini, G. Barbiellini, D. Bastieri, R. Bellazzini, E. Bissaldi, R. D. Blandford, E. D. Bloom, R. Bonino, E. Bottacini, T. J. Brandt, J. Bregeon, P. Bruel, R. Buehler, S. Buson, G. A. Caliandro, R. A. Cameron, R. Caputo, M. Caragiulo, P. A. Caraveo, C. Cecchi, E. Charles, A. Chekhtman, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, A. Cuoco, S. Cutini, F. D’Ammando, A. de Angelis, F. de Palma, R. Desiante, S. W. Digel, L. Di Venere, P. S. Drell, A. Drlica-Wagner, C. Favuzzi, S. J. Fegan, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Giglietto, F. Giordano, M. Giroletti, G. Godfrey, G. A. Gomez-Vargas, I. A. Grenier, J. E. Grove, S. Guiriec, M. Gustafsson, J. W. Hewitt, A. B. Hill, D. Horan, G. Jóhannesson, R. P. Johnson, M. Kuss, S. Larsson, L. Latronico, J. Li, L. Li, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, D. Malyshev, M. Mayer, M. N. Mazziotta, J. E. McEnery, P. F. Michelson, T. Mizuno, A. A. Moiseev, M. E. Monzani, A. Morselli, S. Murgia, E. Nuss, T. Ohsugi, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, M. Pesce-Rollins, F. Piron, G. Pivato, S. Rainò, R. Rando, M. Razzano, A. Reimer, T. Reposeur, S. Ritz, M. Sánchez-Conde, A. Schulz, C. Sgrò, E. J. Siskind, F. Spada, G. Spandre, P. Spinelli, H. Tajima, H. Takahashi, J. B. Thayer, L. Tibaldo, D. F. Torres, G. Tosti, E. Troja, G. Vianello, M. Werner, B. L. Winer, K. S. Wood, M. Wood, G. Zaharijas, and S. Zimmer

Published
2015
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10. POS0824 SAFETY AND EFFICACY OF THE INTENSIFIED B CELL DEPLETION INDUCTION THERAPY FOR PATIENTS WITH ANCA-ASSOCIATED VASCULITIS AND SEVERE RENAL INJURY: A CONTROLLED STUDY

Author

D. Roccatello, S. Sciascia, S. Murgia, G. Quattrocchio, M. Ferro, E. De Simone, C. Naretto, A. Barreca, D. Rossi, and R. Fenoglio

Subjects
Rheumatology, Immunology, Immunology and Allergy, General Biochemistry, Genetics and Molecular Biology
Abstract

BackgroundRituximab (RTX), an anti-CD20 monoclonal antibody, has shown to be an effective induction treatment for small-vessel vasculitides associated with antineutrophil cytoplasm antibodies (AAV) in both newly diagnosed and relapsing patients. However, the role of RTX in the management of the most severe cases of AAV remains to be fully elucidated.Objectivesto assess both safety and efficacy of an intensified B-cell depletion therapy (IBCDT) protocol, including RTX, cyclophosphamide (CYC), and methylprednisolone pulses without additional maintenance immunosuppressive therapy compared to conventional therapy regimen based on oral CYC and steroids and prolonged maintenance therapy with azathioprine (AZA) in patients with AAV and severe renal injury.MethodsA cohort of 15 AAV patients with the most severe features of AVV renal involvement (as ResultsComplete clinical remission (BVAS 0) was observed at 6 months in 14 of 15 patients (93%). All cases treated with IBCDT who achieved a complete clinical remission experienced a depletion of peripheral blood B cells at the end of therapy. Of the 10 dialysis dependent patients at onset, 6 subjects (60%) experienced a functional recovery allowing the suspension of dialysis treatment. When compared to the control group, no statistically significant difference was observed in patients treated with IBCDT in terms of overall survival, 6-month therapeutic response rate, and 6-, and 12-month functional renal recovery. The cumulative total dose of CYC in the case group was on average 1 g/patient while in the control group on average 8.5 g / patient (p = 0.00008). Plasmapheresis sessions were performed at part of the induction therapy among 13 patients (87%) in the case group and 8 (80%) in the control group.ConclusionThe results of this study showed that IBCDT appeared to be safe and has the same efficacy profile when compared to conventional therapy with CYC plus AZA in the management of the most severe patients with AAV. Additionally, this avoids the need of prolonged maintenance therapy for long, and limits the exposure to CYC with consequent reduced toxicity and drug-related side effect rates.Disclosure of InterestsNone declared

Published
2022

11. Dark Matter Interpretation of the Fermi-LAT Observations Toward the Outer Halo of M31

Author

Max Fieg, Anne-Katherine Burns, S. Murgia, Igor V. Moskalenko, Sean P. Fillingham, and C. Karwin

Subjects
Quark, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Annihilation, 010308 nuclear & particles physics, Milky Way, Dark matter, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Antiproton, 0103 physical sciences, Halo, 010306 general physics, Astrophysics - High Energy Astrophysical Phenomena, Energy (signal processing), Astrophysics::Galaxy Astrophysics, Fermi Gamma-ray Space Telescope
Abstract

An excess $\gamma$-ray signal toward the outer halo of M31 has recently been reported. Although other explanations are plausible, the possibility that it arises from dark matter (DM) is valid. In this work we interpret the excess in the framework of DM annihilation, using as our representative case WIMP DM annihilating to bottom quarks, and we perform a detailed study of the systematic uncertainty in the $J$-factor for the M31 field. We find that the signal favors a DM particle with a mass of $\sim$46-73 GeV. While the mass is well constrained, the systematic uncertainty in the cross-section spans 2.5 orders of magnitude, ranging from $\sim$8$\times 10^{-27}-4 \times 10^{-24} \ \mathrm{cm^3 \ s^{-1}}$. This high uncertainty is due to two main factors, namely, an uncertainty in the substructure nature and geometry of the DM halos for both M31 and the Milky Way (MW), and correspondingly, an uncertainty in the contribution to the signal from the MW's DM halo along the line of sight. However, under the conditions that the minimum subhalo mass is $\lesssim 10^{-6} \ M_\odot$ and the actual contribution from the MW's DM halo along the line of sight is at least $\sim$30$\%$ of its total value, we show that there is a large overlap with the DM interpretations of both the Galactic center (GC) excess and the antiproton excess, while also being compatible with the limits for the MW dwarf spheroidals. More generally, we summarize the results from numerous complementary DM searches in the energy range 10 GeV $-$ 300 GeV corresponding to the GC excess and identify a region in parameter space that still remains viable for discovery of the DM particle., Comment: Submitted to Physical Review D

Published
2020
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12. Water Quality and Soil Natural Salinity in the Southern Imera Basin (Sicily, Italy)

Author

Roberta Selvaggi, Nicola Colonna, Flavio Lupia, Maria S. Murgia, and Antonio Poletti

Subjects
hydrochemistry, salinisation, water quality, Imera River, GIS., Agriculture, Plant culture, SB1-1110
Abstract

The Southern Imera river crosses one of the most arid part of Sicily. The geochemical composition of the river water is due to the solubilization processes of gypsum rocks, which accounts for the particularly low quality of resources in the areas in which the presence of evaporitics deposits is highest. The geochemical composition and hydraulic parameters of river was monitored with the aim of reaching a better understanding of the relationships between litology and water quality. The Imera river is a potential local hydric resource, but seasonal variability of salinity does not allow farmers to use its water. A geochemical monitoring of the Imera river water has been carried out in selected localities integrating a GIS analysis of the river hydrography basin and of the distribution of the evaporitic formation. During 2003 and 2005 we performed four monitoring surveys of water chemicophysical parameters (temperature, pH and electrical conductivity) and of the main ionic concentrations (Ca2+, Mg2+, K+, Na+, Cl-, SO4 2- ). We also installed a multiparameter probe next to the hydrometrical station of Drasi, about 15 km from the river mouth. Such multiparameter probe was used to determine, continuously and simultaneously, temperature, electrical conductivity, pH, dissolved oxygen, redox potenzial, water level. The geochemical composition of the water allowed to confirm the results of Roda (1971) and Favara (2000), who pointed out that the main cause of degrade of the Southern Imera river are the salt-rich waters of some tributaries flowing over gypsum rocks and halite deposits. We have been able to identify which specific areas are the main contributors to the degradation of the Imera river.

Published
2010
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13. Anisotropies in the diffuse gamma-ray background measured by the Fermi LAT

Author

M. Ackermann, M. Ajello, A. Albert, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, E. D. Bloom, E. Bonamente, A. W. Borgland, T. J. Brandt, J. Bregeon, M. Brigida, P. Bruel, R. Buehler, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, C. Cecchi, E. Charles, A. Chekhtman, J. Chiang, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, A. Cuoco, S. Cutini, F. D’Ammando, F. de Palma, C. D. Dermer, S. W. Digel, E. do Couto e Silva, P. S. Drell, A. Drlica-Wagner, R. Dubois, C. Favuzzi, S. J. Fegan, E. C. Ferrara, P. Fortin, Y. Fukazawa, P. Fusco, F. Gargano, D. Gasparrini, S. Germani, N. Giglietto, M. Giroletti, T. Glanzman, G. Godfrey, G. A. Gomez-Vargas, T. Grégoire, I. A. Grenier, J. E. Grove, S. Guiriec, M. Gustafsson, D. Hadasch, M. Hayashida, K. Hayashi, X. Hou, R. E. Hughes, G. Jóhannesson, A. S. Johnson, T. Kamae, J. Knödlseder, M. Kuss, J. Lande, L. Latronico, M. Lemoine-Goumard, T. Linden, A. M. Lionetto, M. Llena Garde, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, M. N. Mazziotta, J. E. McEnery, W. Mitthumsiri, T. Mizuno, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, M. Naumann-Godo, J. P. Norris, E. Nuss, T. Ohsugi, A. Okumura, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, J. H. Panetta, D. Parent, V. Pavlidou, M. Pesce-Rollins, M. Pierbattista, F. Piron, G. Pivato, S. Rainò, R. Rando, A. Reimer, O. Reimer, M. Roth, C. Sbarra, J. Schmitt, C. Sgrò, J. Siegal-Gaskins, E. J. Siskind, G. Spandre, P. Spinelli, A. W. Strong, D. J. Suson, H. Takahashi, T. Tanaka, J. B. Thayer, L. Tibaldo, M. Tinivella, D. F. Torres, G. Tosti, E. Troja, T. L. Usher, J. Vandenbroucke, V. Vasileiou, G. Vianello, V. Vitale, A. P. Waite, B. L. Winer, K. S. Wood, M. Wood, Z. Yang, S. Zimmer, and E. Komatsu

Published
2012
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14. Measurement of Separate Cosmic-Ray Electron and Positron Spectra with the Fermi Large Area Telescope

Author

M. Ackermann, M. Ajello, A. Allafort, W. B. Atwood, L. Baldini, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, B. Berenji, R. D. Blandford, E. D. Bloom, E. Bonamente, A. W. Borgland, A. Bouvier, J. Bregeon, M. Brigida, P. Bruel, R. Buehler, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, J. M. Casandjian, C. Cecchi, E. Charles, A. Chekhtman, C. C. Cheung, J. Chiang, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, S. Cutini, A. de Angelis, F. de Palma, C. D. Dermer, S. W. Digel, E. do Couto e Silva, P. S. Drell, A. Drlica-Wagner, C. Favuzzi, S. J. Fegan, E. C. Ferrara, W. B. Focke, P. Fortin, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, S. Germani, N. Giglietto, P. Giommi, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, I. A. Grenier, J. E. Grove, S. Guiriec, M. Gustafsson, D. Hadasch, A. K. Harding, M. Hayashida, R. E. Hughes, G. Jóhannesson, A. S. Johnson, T. Kamae, H. Katagiri, J. Kataoka, J. Knödlseder, M. Kuss, J. Lande, L. Latronico, M. Lemoine-Goumard, M. Llena Garde, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, G. M. Madejski, M. N. Mazziotta, J. E. McEnery, P. F. Michelson, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, T. Nakamori, P. L. Nolan, J. P. Norris, E. Nuss, M. Ohno, T. Ohsugi, A. Okumura, N. Omodei, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, D. Parent, M. Pesce-Rollins, M. Pierbattista, F. Piron, G. Pivato, T. A. Porter, S. Rainò, R. Rando, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, T. Reposeur, S. Ritz, R. W. Romani, M. Roth, H. F.-W. Sadrozinski, C. Sbarra, T. L. Schalk, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, A. W. Strong, H. Takahashi, T. Takahashi, T. Tanaka, J. G. Thayer, J. B. Thayer, L. Tibaldo, M. Tinivella, D. F. Torres, G. Tosti, E. Troja, Y. Uchiyama, T. L. Usher, J. Vandenbroucke, V. Vasileiou, G. Vianello, V. Vitale, A. P. Waite, B. L. Winer, K. S. Wood, M. Wood, Z. Yang, and S. Zimmer

Published
2012
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15. Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope

Author

M. Ackermann, M. Ajello, A. Albert, W. B. Atwood, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, B. Berenji, R. D. Blandford, E. D. Bloom, E. Bonamente, A. W. Borgland, J. Bregeon, M. Brigida, P. Bruel, R. Buehler, T. H. Burnett, S. Buson, G. A. Caliandro, R. A. Cameron, B. Cañadas, P. A. Caraveo, J. M. Casandjian, C. Cecchi, E. Charles, A. Chekhtman, J. Chiang, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, S. Cutini, A. de Angelis, F. de Palma, C. D. Dermer, S. W. Digel, E. do Couto e Silva, P. S. Drell, A. Drlica-Wagner, L. Falletti, C. Favuzzi, S. J. Fegan, E. C. Ferrara, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Gehrels, S. Germani, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, I. A. Grenier, S. Guiriec, M. Gustafsson, D. Hadasch, M. Hayashida, E. Hays, R. E. Hughes, T. E. Jeltema, G. Jóhannesson, R. P. Johnson, A. S. Johnson, T. Kamae, H. Katagiri, J. Kataoka, J. Knödlseder, M. Kuss, J. Lande, L. Latronico, A. M. Lionetto, M. Llena Garde, F. Longo, F. Loparco, B. Lott, M. N. Lovellette, P. Lubrano, G. M. Madejski, M. N. Mazziotta, J. E. McEnery, J. Mehault, P. F. Michelson, W. Mitthumsiri, T. Mizuno, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, M. Naumann-Godo, J. P. Norris, E. Nuss, T. Ohsugi, A. Okumura, N. Omodei, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, D. Parent, M. Pesce-Rollins, M. Pierbattista, F. Piron, G. Pivato, T. A. Porter, S. Profumo, S. Rainò, M. Razzano, A. Reimer, O. Reimer, S. Ritz, M. Roth, H. F.-W. Sadrozinski, C. Sbarra, J. D. Scargle, T. L. Schalk, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, L. Strigari, D. J. Suson, H. Tajima, H. Takahashi, T. Tanaka, J. G. Thayer, J. B. Thayer, D. J. Thompson, L. Tibaldo, M. Tinivella, D. F. Torres, E. Troja, Y. Uchiyama, J. Vandenbroucke, V. Vasileiou, G. Vianello, V. Vitale, A. P. Waite, P. Wang, B. L. Winer, K. S. Wood, M. Wood, Z. Yang, S. Zimmer, M. Kaplinghat, and G. D. Martinez

Published
2011
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16. Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun

Author

M. Ajello, W. B. Atwood, L. Baldini, G. Barbiellini, D. Bastieri, R. Bellazzini, B. Berenji, R. D. Blandford, E. D. Bloom, E. Bonamente, A. W. Borgland, E. Bottacini, A. Bouvier, J. Bregeon, M. Brigida, P. Bruel, R. Buehler, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, C. Cecchi, E. Charles, A. Chekhtman, S. Ciprini, R. Claus, J. Cohen-Tanugi, S. Cutini, A. de Angelis, F. de Palma, C. D. Dermer, S. W. Digel, E. do Couto e Silva, P. S. Drell, C. Favuzzi, S. J. Fegan, W. B. Focke, Y. Fukazawa, P. Fusco, F. Gargano, N. Gehrels, S. Germani, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, I. A. Grenier, S. Guiriec, M. Gustafsson, D. Hadasch, G. Iafrate, G. Jóhannesson, A. S. Johnson, T. Kamae, H. Katagiri, J. Kataoka, M. Kuss, L. Latronico, A. M. Lionetto, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, M. N. Mazziotta, J. E. McEnery, P. F. Michelson, T. Mizuno, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, M. Naumann-Godo, J. P. Norris, E. Nuss, T. Ohsugi, N. Omodei, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, J. H. Panetta, M. Pesce-Rollins, M. Pierbattista, F. Piron, S. Rainò, R. Rando, M. Razzano, A. Reimer, O. Reimer, S. Ritz, T. L. Schalk, C. Sgrò, J. Siegal-Gaskins, E. J. Siskind, P. D. Smith, G. Spandre, P. Spinelli, D. J. Suson, H. Takahashi, T. Tanaka, J. G. Thayer, J. B. Thayer, L. Tibaldo, G. Tosti, E. Troja, T. L. Usher, J. Vandenbroucke, V. Vasileiou, G. Vianello, N. Vilchez, A. P. Waite, P. Wang, B. L. Winer, K. S. Wood, Z. Yang, and S. Zimmer

Published
2011
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17. Search for gamma-ray emission from p -wave dark matter annihilation in the Galactic Center

Author

Regina Caputo, C. Karwin, Jessie Shelton, S. Murgia, C. A. Johnson, and S Ritz

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Supermassive black hole, Annihilation, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Galactic Center, FOS: Physical sciences, Context (language use), Astrophysics, 01 natural sciences, Article, Galaxy, Galactic halo, 0103 physical sciences, Astrophysics - High Energy Astrophysical Phenomena, 010306 general physics, Fermi Gamma-ray Space Telescope
Abstract

Indirect searches for dark matter through Standard Model products of its annihilation generally assume a cross-section which is dominated by a term independent of velocity ($s$-wave annihilation). However, in many DM models an $s$-wave annihilation cross-section is absent or helicity suppressed. To reproduce the correct DM relic density in these models, the leading term in the cross section is proportional to the DM velocity squared ($p$-wave annihilation). Indirect detection of such $p$-wave DM is difficult because the average velocities of DM in galaxies today are orders of magnitude slower than the DM velocity at the time of decoupling from the primordial thermal plasma, suppressing the annihilation cross-section today by some five orders of magnitude relative to its value at freeze out. Thus $p$-wave DM is out of reach of traditional searches for DM annihilations in the Galactic halo. Near the region of influence of a central supermassive black hole, such as Sgr A$^*$, however, DM can form a localized over-density known as a `spike'. In such spikes the DM is predicted to be both concentrated in space and accelerated to higher velocities, allowing the $\gamma$-ray signature from its annihilation to potentially be detectable above the background. We use the $Fermi$ Large Area Telescope to search for the $\gamma$-ray signature of $p$-wave annihilating DM from a spike around Sgr A$^*$ in the energy range 10 GeV-600 GeV. Such a signal would appear as a point source and would have a sharp line or box-like spectral features difficult to mimic with standard astrophysical processes, indicating a DM origin. We find no significant excess of $\gamma$ rays in this range, and we place upper limits on the flux in $\gamma$-ray boxes originating from the Galactic Center. This result, the first of its kind, is interpreted in the context of different models of the DM density near Sgr A$^*$., Comment: 16 pages, 7 figures

Published
2019

19. Fermi-LAT Observations of Gamma-Ray Emission Towards the Outer Halo of M31

Author

Igor V. Moskalenko, C. Karwin, Sheldon Campbell, and S. Murgia

Subjects
Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Spiral galaxy, Andromeda Galaxy, Milky Way, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Article, Galaxy, Galactic halo, Dark matter halo, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Space and Planetary Science, Halo, Surface brightness, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics, Fermi Gamma-ray Space Telescope
Abstract

The Andromeda Galaxy is the closest spiral galaxy to us and has been the subject of numerous studies. It harbors a massive dark matter (DM) halo which may span up to ~600 kpc across and comprises ~90% of the galaxy's total mass. This halo size translates into a large diameter of 42 degrees on the sky for an M31-Milky Way (MW) distance of 785 kpc, but its presumably low surface brightness makes it challenging to detect with gamma-ray telescopes. Using 7.6 years of Fermi Large Area Telescope (Fermi-LAT) observations, we make a detailed study of the gamma-ray emission between 1-100 GeV towards M31's outer halo, with a total field radius of 60 degrees centered at M31, and perform an in-depth analysis of the systematic uncertainties related to the observations. We use the cosmic ray (CR) propagation code GALPROP to construct specialized interstellar emission models (IEMs) to characterize the foreground gamma-ray emission from the MW, including a self-consistent determination of the isotropic component. We find evidence for an extended excess that appears to be distinct from the conventional MW foreground, having a total radial extension upwards of ~120-200 kpc from the center of M31. We discuss plausible interpretations of the excess emission but emphasize that uncertainties in the MW foreground, and in particular, modeling of the H I-related components, have not been fully explored and may impact the results. This study was first presented in a poster at the 8th International Fermi Symposium. The article describing the full analysis is under preparation and will be published elsewhere., Comment: Presented at the 8th International Fermi Symposium, Oct. 14-19, 2018, Baltimore, MD

Published
2018
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20. Harmonizing the MSSM with the Galactic Center excess

Author

Tilman Plehn, Tim M. P. Tait, S. Murgia, and Anja Butter

Subjects
Physics, Particle physics, Quantum Physics, 010308 nuclear & particles physics, Hot dark matter, Dark matter, Scalar field dark matter, Molecular, hep-ph, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Atomic, Nuclear & Particles Physics, Dark matter halo, Particle and Plasma Physics, 0103 physical sciences, Mixed dark matter, Warm dark matter, Nuclear, 010306 general physics, Light dark matter, Dark fluid, Astronomical and Space Sciences
Abstract

The minimal supersymmetric setup offers a comprehensive framework to interpret the Fermi LAT Galactic center excess. Taking into account experimental, theoretical, and astrophysical uncertainties we can identify valid parameter regions linked to different annihilation channels. They extend to dark matter masses above 250 GeV. There exists a very mild tension between the observed relic density and the annihilation rate in the center of our galaxy for specific channels. The strongest additional constraints come from the new generation of direct detection experiments, ruling out much of the light and intermediate dark matter mass regime and giving preference to heavier dark matter annihilating into a pair of top quarks.

Published
2017

21. Dark matter interpretation of the Fermi-LAT observation toward the Galactic Center

Author

T. A. Porter, S. Murgia, C. Karwin, Tim M. P. Tait, and Philip Tanedo

Subjects
Particle physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Scalar field dark matter, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Atomic, 01 natural sciences, Particle and Plasma Physics, High Energy Physics - Phenomenology (hep-ph), Baryonic dark matter, 0103 physical sciences, Warm dark matter, Nuclear, 010306 general physics, Light dark matter, Astrophysics::Galaxy Astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Quantum Physics, 010308 nuclear & particles physics, Hot dark matter, Center (category theory), Molecular, hep-ph, Nuclear & Particles Physics, High Energy Physics - Phenomenology, Weakly interacting massive particles, Astrophysics - High Energy Astrophysical Phenomena, Astronomical and Space Sciences
Abstract

The center of the Milky Way is predicted to be the brightest region of $\ensuremath{\gamma}$-rays generated by self-annihilating dark matter particles. Excess emission about the Galactic center above predictions made for standard astrophysical processes has been observed in $\ensuremath{\gamma}$-ray data collected by the Fermi Large Area Telescope. It is well described by the square of a Navarro, Frenk, and White dark matter density distribution. Although other interpretations for the excess are plausible, the possibility that it arises from annihilating dark matter is valid. In this paper, we characterize the excess emission as annihilating dark matter in the framework of an effective field theory. We consider the possibility that the annihilation process is mediated by either pseudoscalar or vector interactions and constrain the coupling strength of these interactions by fitting to the Fermi Large Area Telescope data for energies 1--100 GeV in the $15\ifmmode^\circ\else\textdegree\fi{}\ifmmode\times\else\texttimes\fi{}15\ifmmode^\circ\else\textdegree\fi{}$ region about the Galactic center using self-consistently derived interstellar emission models and point source lists for the region. The excess persists and its spectral characteristics favor a dark matter particle with a mass in the range approximately from 50 to 190 (10 to 90) GeV and annihilation cross section approximately from $1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}26}$ to $4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}25}$ ($6\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}27}$ to $2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}25}$) ${\mathrm{cm}}^{3}/\mathrm{s}$ for pseudoscalar (vector) interactions. We map these intervals into the corresponding WIMP-neutron scattering cross sections and find that the allowed range lies well below current and projected direct detection constraints for pseudoscalar interactions, but are typically ruled out for vector interactions.

Published
2017

22. Local spin dynamics of iron oxide magnetic nanoparticles dispersed in different solvents with variable size and shape: A

Author

M, Basini, T, Orlando, P, Arosio, M F, Casula, D, Espa, S, Murgia, C, Sangregorio, C, Innocenti, and A, Lascialfari

Abstract

Colloidal magnetic nanoparticles (MNPs) based on a nearly monodisperse iron oxide core and capped by oleic acid have been used as model systems for investigating the superparamagnetic spin dynamics by means of magnetometry measurements and nuclear magnetic resonance (

Published
2017

24. Comparisons of the MINOS near and far detector readout systems at a test beam

Author

David Petyt, A. Belias, Ruben Saakyan, P. A. Symes, P. S. Miyagawa, Gary Drake, P. Shanahan, E. Falk, Caleb Smith, S. Murgia, D. G. Michael, R. J. Nichol, P. Vahle, Philip Harris, A. C. Weber, L. Jenner, M. Kordosky, N. Tagg, G. Crone, J. Hartnell, Karol Lang, S. Boyd, Juergen Thomas, R. Morse, T. C. Nicholls, M. A. Barker, Anatael Cabrera, D. E. Reyna, P. Adamson, G. F. Pearce, and R. P. Litchfield

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Particle physics, Large Hadron Collider, Physics - Instrumentation and Detectors, business.industry, Physics::Instrumentation and Detectors, Monte Carlo method, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Optics, MINOS, Calibration, High Energy Physics::Experiment, business, Neutrino oscillation, physics.ins-det, Instrumentation, Energy (signal processing)
Abstract

MINOS is a long baseline neutrino oscillation experiment that uses two detectors separated by 734 km. The readout systems used for the two detectors are different and have to be independently calibrated. To verify and make a direct comparison of the calibrated response of the two readout systems, test beam data were acquired using a smaller calibration detector. This detector was simultaneously instrumented with both readout systems and exposed to the CERN PS T7 test beam. Differences in the calibrated response of the two systems are shown to arise from differences in response non-linearity, photomultiplier crosstalk, and threshold effects at the few percent level. These differences are reproduced by the Monte Carlo (MC) simulation to better than 1% and a scheme that corrects for these differences by calibrating the MC to match the data in each detector separately is presented. The overall difference in calorimetric response between the two readout systems is shown to be consistent with zero to a precision of 1.3% in data and 0.3% in MC with no significant energy dependence., 25 pages, 8 figures

Published
2016

25. Charge-separated atmospheric neutrino-induced muons in the MINOS far detector

Author

S. Murgia, B. Speakman, D. J. Auty, A. Lebedev, D. G. Michael, M. Zois, M. Kordosky, P. S. Miyagawa, P. Stamoulis, V. K. Semenov, A. E. Kreymer, P. Vahle, C. Howcroft, G. Tzanakos, H. R. Gallagher, G. Koizumi, J. K. De Jong, P. Lucas, N. Mayer, M. Watabe, D. J. Boehnlein, J. Reichenbacher, D. A. Harris, David Petyt, Marvin L Marshak, E. A. Peterson, M. Bishai, Warner A. Miller, Ken Heller, Mcd Sanchez, T. Joffe-Minor, Ž Pavlović, T. Kafka, M. Dierckxsens, M. A. Thomson, D. Naples, A. C. Weber, P. A. Symes, Stanley G. Wojcicki, S. M. Seun, M. Dorman, Jie Liu, K. Grzelak, M. D. Messier, S. Childress, R. Piteira, S. R. Mishra, Niki Saoulidou, G. F. Pearce, V. A. Ryabov, E. Buckley-Geer, J. Boehm, J. J. Evans, D. Rahman, S. Avvakumov, G. Tinti, A. Holin, T. Bergfeld, S. M S Kasahara, A. D. Marino, R. C. Webb, J. A. Thompson, Jorge G. Morfin, J. Hylen, R. H. Bernstein, A. Para, M. C. Goodman, M. Ishitsuka, Harvey B Newman, B. R. Becker, D. Bogert, D. J. Koskinen, A. Belias, Juan Pedro Ochoa-Ricoux, J. H. Cobb, T. Durkin, C. James, E. P. Hartouni, D. R. Ward, A. Mislivec, R. J. Nichol, Douglas Wright, Anatael Cabrera, I. Trostin, John Marshall, N. Grossman, T. M. Raufer, D. Bhattacharya, A. M. McGowan, S. K. Kotelnikov, K. Ruddick, E. Grashorn, H. Zheng, J. Hartnell, S. L. Mufson, R. Ospanov, T. C. Nicholls, Q. K. Wu, K. E. Arms, J. Gogos, J. Schneps, C. Rosenfeld, V. A. Tsarev, T. H. Fields, R. P. Litchfield, R. Pittam, Ruben Saakyan, Sacha E Kopp, G. M. Irwin, G. A. Giurgiu, D. Cherdack, R. Gran, G. J. Bock, H. A. Rubin, C. P. Ward, Carlos Escobar, M. V. Frohne, D. Indurthy, P. Schreiner, M. V. Diwan, A. Marchionni, C. Andreopoulos, H. J. Kang, D. E. Reyna, Andrew Blake, R. K. Plunkett, E. Falk Harris, C. D. Moore, Alec Habig, T. Osiecki, A. Sousa, Francisco Yumiceva, G. J. Feldman, W. Smart, J. Urheim, R. Armstrong, Brajesh C Choudhary, Peter D. Barnes, P. Adamson, B. C. Barish, W. P. Oliver, V. Paolone, C. R. Bower, J. L. Thron, E. Tetteh-Lartey, R. Zwaska, J. K. Nelson, R. L. Talaga, D. A. Jensen, D. E. Jaffe, A. J. Culling, E. Beall, H. Ping, D. Drakoulakos, S. Kumaratunga, B. Rebel, M. S. Kim, B. Baller, V. Smirnitsky, Philip Harris, J. A. Musser, A. De Santo, R. H. Milburn, C. White, C. W. Peck, P. J. Litchfield, P. M. Border, Karol Lang, L. Mualem, V. Verebryusov, R. A. Rameika, T. Yang, R. Hatcher, A. R. Erwin, John Derek Chapman, J. R. Meier, G. I. Merzon, N. West, D. S. Ayres, L. Jenner, William L. Barrett, P. Shanahan, B. Bock, W. A. Mann, A. Godley, P. Gouffon, R. Lee, B. Viren, R. Ford, Caleb Smith, J. M. Paley, A. A. Wehmann, N. Tagg, T. Patzak, G.D. Barr, John Miller, Juergen Thomas, 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 - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), 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), MINOS, 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), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, 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), and 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)-Observatoire de Paris

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Monte Carlo method, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Neutrino detector, MINOS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Neutrino, 010306 general physics, Super-Kamiokande, Neutrino oscillation, Lepton
Abstract

We found 140 neutrino-induced muons in 854.24 live days in the MINOS far detector. We looked for evidence of neutrino disappearance in this data set by computing the ratio of the number of low momentum muons to the sum of the number of high momentum and unknown momentum muons for both data and Monte Carlo expectation in the absence of neutrino oscillations. The ratio of data and Monte Carlo ratios is consistent with an oscillation signal. A fit to the data for the oscillation parameters excludes the null oscillation hypothesis at the 94% confidence level. We separated the muons by charge sign in both the data and Monte Carlo events and found the ratio of the total number of negative to positive muons in both samples. The ratio of those ratios is a test of CPT conservation. The result is consistent with CPT conservation., 14 pages, 15 figures

Published
2016

26. Observation of diffractive J/psi production at the Fermilab Tevatron

Author

K. Kondo, Robert M Harris, G. Veramendi, M. Gold, A. Munar, G. Pauletta, Andrea Castro, D. Khazins, Maxwell Chertok, T. Ohsugi, I. Yu, M. J. Shochet, K. Karr, R. J. Miller, A. Connolly, E. Kovacs, T. Ohmoto, W. Orejudos, Frank Chlebana, T. Asakawa, Z. Yu, Marjorie Shapiro, A. J. Slaughter, A. Mukherjee, A. Akopian, C. Pagliarone, G. Punzi, E. Engels, Maurice Garcia-Sciveres, M. P. Schmidt, Andrea Bocci, E. Buckley-Geer, Riccardo Paoletti, P. Schlabach, S. Galeotti, A. Rakitine, P. Sinervo, R. Takashima, Tommaso Dorigo, James Bensinger, M. Barone, M. Kelly, E. McKigney, J. Wolinski, A. Reichold, Leonard Spiegel, R. Vilar, P. K. Teng, C. Green, A. Nomerotski, T. Yoshida, P. Azzi-Bacchetta, C. Smith, M. Guenther, C. Bromberg, P. Murat, G. Velev, N. Lai, Kazuhiko Hara, F. Zetti, Stephan Lammel, A. Robinson, S. Wolinski, J. D. Lewis, Kenichi Hatakeyama, J. G. Loken, C. Holck, E. James, S. Vejcik, M. Mangano, G. W. Foster, D. Glenzinski, M. Lindgren, T. Kikuchi, A. Artikov, S. Segler, H. Sato, M. Kirk, P. Koehn, P. Yeh, Fedor Prokoshin, Pierre Savard, M. Popovic, Yasuo Fukui, T. Takano, M. Franklin, Lawrence Nodulman, M. Shimojima, Stefano Belforte, T. Okusawa, T. Kuwabara, P. Mazzanti, Q. Fan, A. Tollestrup, W. Caskey, C. Ferretti, R. E. Hughes, Maria Spiropulu, T. Devlin, B. Tannenbaum, Thomas LeCompte, A. Sidoti, J. Done, J. Huston, Matthew Herndon, Chunhui Chen, Petar Maksimovic, Hajin Kim, M. Mishina, J. C. Freeman, J. A.J. Matthews, G. Bauer, A. D. Hardman, F. D. Snider, J. Cranshaw, L. Ristori, R. Culbertson, R. J. Tesarek, S. Rolli, Benjamin Kilminster, Y. Gotra, Fumihiko Ukegawa, A. Dominguez, D. Winn, Christoph Paus, J. Carlson, A. B. Wicklund, William Trischuk, D. Lucchesi, Barry Blumenfeld, S. C. van den Brink, M. J. Wang, T. Miao, R. M. Haas, Umesh Joshi, Roger Moore, M. H. Kirby, D. O. Litvintsev, Nicola Bacchetta, E. E. Schmidt, C. I. Ciobanu, A. Roy, J. Steele, F. Bedeschi, Xin Wu, S. Wolbers, D. W. Gerdes, K. D. Hoffman, Gino Bolla, T. L. Watts, L. Holloway, H. Toyoda, S. H. Kim, Christina Mesropian, Yanwen Liu, R. Kephart, R. L. Wagner, Hiroto Kambara, T. Handa, Andrey Korytov, N. S. Lockyer, Roberto Rossin, S. Cabrera, W. Carithers, S. Murgia, H. Wenzel, H. Akimoto, A. Scribano, R. Oishi, R. Madrak, Joe Kroll, C. Nelson, Monica D'Onofrio, J. Patrick, P. Sphicas, Virgil E Barnes, N. Moggi, Frank Hartmann, Alan Sill, K. Goulianos, S. R. Hahn, V. Glagolev, K. S. McFarland, S. Tether, J. Antos, Konstanty Sumorok, M. Bishai, S. Lami, T. Shah, J. Berryhill, A. Semenov, M. Cordelli, G. Busetto, Brian L Winer, M. Brozovic, Minu Kim, S. Waschke, K. Tollefson, R. G. Wagner, Kenneth Bloom, Matthew Jones, K. Anikeev, D. Errede, G. Latino, Th. Müller, K. Sliwa, S. Klimenko, Aw Chan, T. Shibayama, M. Loreti, Duncan Carlsmith, J. Valls, D. Wolinski, K. Kelley, S. Leone, H. S. Budd, T. Kaneko, Joel Goldstein, Y. C. Chen, S. Tkaczyk, David Stuart, Y. Kato, D. Neuberger, G. Guillian, M. Binkley, P. Gris, Alexei Safonov, M. G. Albrow, Douglas Benjamin, J. Guimaraes Da Costa, D. Tonelli, R. G. Feild, K. Terashi, P. S. Chang, J. B. Liu, James D. Olsen, S. Lusin, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, C. Haber, Tong Gao, S. E. Kuhlmann, A. Menzione, Y. Seiya, Nicola Turini, A. T. Laasanen, Catherine Newman-Holmes, Jay Hauser, G. P. Yeh, I. V. Gorelov, T. Speer, J. Spalding, G. Chlachidze, G. P. Grim, Masaaki Tanaka, Tony Liss, P. Amaral, G. Piacentino, S. Worm, K. Borras, R. D. Field, D. Amidei, M. L. Chu, A. T. Goshaw, H. Minato, Mosè Mariotti, Paolo Calafiura, Teresa Rodrigo, K. Lee, W. C. Wester, F. Strumia, T. J. Phillips, S. Miscetti, S. Zucchelli, R. E. Blair, Andrea Sansoni, Ivan-Kresimir Furic, Christopher Neu, F. Rimondi, E. Brubaker, J. Strologas, P. de Barbaro, A. Gallas, J. F. de Troconiz, Y. Morita, P. Tamburello, J. Lys, S. Donati, J. Yoh, P. Gatti, M. E. Convery, P. F. Derwent, V. Nagaslaev, M. von der Mey, Hiroshi Ikeda, R. Roser, Ivan Vila, J. N. Bellinger, G. Bellettini, H. Bachacou, S. Baroiant, F. DeJongh, W. Ashmanskas, Robin Erbacher, W-M. Yao, O. Pukhov, Louis Lyons, G. Martignon, R. C. Webb, J.I. Friedman, M. Lancaster, A. Byon-Wagner, Tetsuo Arisawa, C. Hill, S. Errede, W. K. Sakumoto, N. B. Wallace, L. Demortier, Igor Volobouev, C. H. Wang, N. Eddy, R. J. Hollebeek, J. Wyss, Soo-Bong Kim, Andrew Beretvas, Timothy Knight Nelson, C. Grosso-Pilcher, Z. Wan, A. M. Lee, J. S. Miller, Kevin Burkett, Jacobo Konigsberg, Young Do Oh, J. Mayer, Beom Jun Kim, Richard Dante St Denis, A. Bodek, J. Iwai, W. H. Bell, G. Chiarelli, W. Hao, A. Ruiz, D. Toback, M. T. Cheng, R. D. Kennedy, M. M. Deninno, C. Yosef, Alessandro Cerri, B. Ward, Amitabh Lath, A. Brandl, T. Moulik, I.E. Chirikov-Zorin, A. Solodsky, A. G. Clark, B. A. Barnett, Giorgio Apollinari, A. Meyer, J. Siegrist, Kevin Einsweiler, T. Wilkes, John Huth, M. Dell'Orso, Teruki Kamon, A. J. Martin, L. Pondrom, E. Wicklund, Craig Blocker, C. R. Hall, J. W. Chapman, Kaori Maeshima, Mark Kruse, Luca Scodellaro, Guenakh Mitselmakher, J. E. Elias, T. Vaiciulis, Paul Tipton, K. L. Byrum, P. Wilson, P. N. Singh, M. Menguzzato, M. Tecchio, R. Vidal, Anna Zanetti, H. Kasha, H. Niu, N. Bruner, L. Rosenson, P. F. Shepard, S. H. Oh, Jane Nachtman, J. P. Fernandez, L. E. Kirsch, F. Ratnikov, P. Lukens, Jay Dittmann, D. Cauz, V. Papadimitriou, Daijin Kim, Michele Gallinaro, A. S. Thompson, A. Heiss, Itsuo Nakano, D. Dagenhart, J. Tseng, L. Groer, L. Pescara, Alan Garfinkel, J. Boudreau, M. Riveline, H. H. Williams, K. T. Pitts, G. Introzzi, A. Korn, A. Stefanini, Y. Bonushkin, David Saltzberg, D. Reher, P. McIntyre, J. Budagov, R. L. Lander, J. P. Berge, F. Azfar, D. E. Pellett, L. Christofek, T. Suzuki, C. Sanchez, Manfred Paulini, S. Blusk, Jochen Jens Heinrich, H. Nakada, A. Pompos, Sally Seidel, Saverio D'Auria, O. Lobban, Yongsun Kim, L. Santi, Shin-Shan Yu, A. Ribon, M. Mulhearn, W. Riegler, F. Ptohos, W. J. Robertson, T. Watanabe, W. Bokhari, M. Campbell, D. Waters, P. Giannetti, J. Lancaster, R. Handler, Y. S. Chung, S. Dell'Agnello, R. Cropp, S. Bailey, B. Flaugher, Michael Schmitt, J. Incandela, J. Conway, G. Pope, T. Affolder, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, F. Spinella, K. Kurino, I. Fiori, A. W. Scott, D. Partos, James Proudfoot, F. Palmonari, L. Malferrari, R. Thurman-Keup, Cyp Ngan, S. Nahn, E. Moore, Y. Iwata, Daniela Bortoletto, K. Takikawa, Clark, Allan Geoffrey, Kambara, Hisanori, Speer, Thomas, Strumia Michelini, Federica, and Wu, Xin

Subjects
Physics, Particle physics, Muon, Proton, Tevatron, General Physics and Astronomy, Particle accelerator, ddc:500.2, SILICON VERTEX DETECTOR, DIJET PRODUCTION, CDF, Gluon, law.invention, High Energy Physics - Experiment, Nuclear physics, law, Pseudorapidity, SILICON VERTEX DETECTOR, DIJET PRODUCTION, CDF, Rapidity, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, QC
Abstract

We report the first observation of diffractive $J/\psi(\to \mu^+\mu^-)$ production in $\bar pp$ collisions at $\sqrt{s}$=1.8 TeV. Diffractive events are identified by their rapidity gap signature. In a sample of events with two muons of transverse momentum $p_T^{\mu}>2$ GeV/$c$ within the pseudorapidity region $|\eta, Comment: 9 pages, 4 figures, using RevTeX. Submitted to Physical Review Letters

Published
2016

27. Measurement of the strong coupling constant from inclusive jet production at the Tevatron pp collider

Author

T. Affolder, H. Akimoto, A. Akopian, M. G. Albrow, P. Amaral, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, T. Arisawa, A. Artikov, T. Asakawa, W. Ashmanskas, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, H. Bachacou, S. Bailey, P. de Barbaro, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, S. Baroiant, M. Barone, G. Bauer, F. Bedeschi, S. Belforte, W. H. Bell, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. P. Berge, J. Berryhill, A. Bhatti, M. Binkley, D. Bisello, M. Bishai, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, S. R. Blusk, A. Bocci, A. Bodek, W. Bokhari, G. Bolla, Y. Bonushkin, D. Bortoletto, J. Boudreau, A. Brandl, S. van den Brink, C. Bromberg, M. Brozovic, E. Brubaker, N. Bruner, E. Buckley-Geer, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, A. Byon-Wagner, K. L. Byrum, S. Cabrera, P. Calafiura, M. Campbell, W. Carithers, J. Carlson, D. Carlsmith, W. Caskey, A. Castro, D. Cauz, A. Cerri, A. W. Chan, P. S. Chang, P. T. Chang, J. Chapman, C. Chen, Y. C. Chen, M.-T. Cheng, M. Chertok, G. Chiarelli, I. Chirikov-Zorin, G. Chlachidze, F. Chlebana, L. Christofek, M. L. Chu, Y. S. Chung, C. I. Ciobanu, A. G. Clark, A. P. Colijn, A. Connolly, M. Convery, J. Conway, M. Cordelli, J. Cranshaw, R. Cropp, R. Culbertson, D. Dagenhart, S. D'Auria, F. DeJongh, S. Dell'Agnello, M. Dell'Orso, S. Demers, L. Demortier, M. Deninno, P. F. Derwent, T. Devlin, J. R. Dittmann, A. Dominguez, S. Donati, J. Done, M. D'Onofrio, T. Dorigo, N. Eddy, K. Einsweiler, J. E. Elias, E. Engels, R. Erbacher, D. Errede, S. Errede, Q. Fan, H.-C. Fang, R. G. Feild, J. P. Fernandez, C. Ferretti, R. D. Field, I. Fiori, B. Flaugher, G. W. Foster, M. Franklin, J. Freeman, J. Friedman, Y. Fukui, I. Furic, S. Galeotti, A. Gallas, M. Gallinaro, T. Gao, M. Garcia-Sciveres, A. F. Garfinkel, P. Gatti, C. Gay, D. W. Gerdes, P. Giannetti, P. Giromini, V. Glagolev, D. Glenzinski, M. Gold, J. Goldstein, I. Gorelov, A. T. Goshaw, Y. Gotra, K. Goulianos, C. Green, G. Grim, P. Gris, L. Groer, C. Grosso-Pilcher, M. Guenther, G. Guillian, J. Guimaraes da Costa, R. M. Haas, C. Haber, S. R. Hahn, C. Hall, T. Handa, R. Handler, W. Hao, F. Happacher, K. Hara, A. D. Hardman, R. M. Harris, F. Hartmann, K. Hatakeyama, J. Hauser, J. Heinrich, A. Heiss, M. Herndon, C. Hill, K. D. Hoffman, C. Holck, R. Hollebeek, L. Holloway, B. T. Huffman, R. Hughes, J. Huston, J. Huth, H. Ikeda, J. Incandela, G. Introzzi, A. Ivanov, J. Iwai, Y. Iwata, E. James, M. Jones, U. Joshi, H. Kambara, T. Kamon, T. Kaneko, K. Karr, S. Kartal, H. Kasha, Y. Kato, T. A. Keaffaber, K. Kelley, M. Kelly, D. Khazins, T. Kikuchi, B. Kilminster, B. J. Kim, D. H. Kim, H. S. Kim, M. J. Kim, S. B. Kim, S. H. Kim, Y. K. Kim, M. Kirby, M. Kirk, L. Kirsch, S. Klimenko, P. Koehn, K. Kondo, J. Konigsberg, A. Korn, A. Korytov, E. Kovacs, J. Kroll, M. Kruse, S. E. Kuhlmann, K. Kurino, T. Kuwabara, A. T. Laasanen, N. Lai, S. Lami, S. Lammel, J. Lancaster, M. Lancaster, R. Lander, A. Lath, G. Latino, T. LeCompte, A. M. Lee, K. Lee, S. Leone, J. D. Lewis, M. Lindgren, T. M. Liss, J. B. Liu, Y. C. Liu, D. O. Litvintsev, O. Lobban, N. Lockyer, J. Loken, M. Loreti, D. Lucchesi, P. Lukens, S. Lusin, L. Lyons, J. Lys, R. Madrak, K. Maeshima, P. Maksimovic, L. Malferrari, M. Mangano, M. Mariotti, G. Martignon, A. Martin, J. A. J. Matthews, J. Mayer, P. Mazzanti, K. S. McFarland, P. McIntyre, E. McKigney, M. Menguzzato, A. Menzione, P. Merkel, C. Mesropian, A. Meyer, T. Miao, R. Miller, J. S. Miller, H. Minato, S. Miscetti, M. Mishina, G. Mitselmakher, Y. Miyazaki, N. Moggi, E. Moore, R. Moore, Y. Morita, T. Moulik, M. Mulhearn, A. Mukherjee, T. Muller, A. Munar, P. Murat, S. Murgia, J. Nachtman, V. Nagaslaev, S. Nahn, H. Nakada, I. Nakano, C. Nelson, T. Nelson, C. Neu, D. Neuberger, C. Newman-Holmes, C.-Y. P. Ngan, H. Niu, L. Nodulman, A. Nomerotski, S. H. Oh, Y. D. Oh, T. Ohmoto, T. Ohsugi, R. Oishi, T. Okusawa, J. Olsen, W. Orejudos, C. Pagliarone, F. Palmonari, R. Paoletti, V. Papadimitriou, D. Partos, J. Patrick, G. Pauletta, M. Paulini, C. Paus, D. Pellett, L. Pescara, T. J. Phillips, G. Piacentino, K. T. Pitts, A. Pompos, L. Pondrom, G. Pope, M. Popovic, F. Prokoshin, J. Proudfoot, F. Ptohos, O. Pukhov, G. Punzi, A. Rakitine, F. Ratnikov, D. Reher, A. Reichold, P. Renton, A. Ribon, W. Riegler, F. Rimondi, L. Ristori, M. Riveline, W. J. Robertson, A. Robinson, T. Rodrigo, S. Rolli, L. Rosenson, R. Roser, R. Rossin, C. Rott, A. Roy, A. Ruiz, A. Safonov, R. St. Denis, W. K. Sakumoto, D. Saltzberg, C. Sanchez, A. Sansoni, L. Santi, H. Sato, P. Savard, P. Schlabach, E. E. Schmidt, M. P. Schmidt, M. Schmitt, L. Scodellaro, A. Scott, A. Scribano, S. Segler, S. Seidel, Y. Seiya, A. Semenov, F. Semeria, T. Shah, M. D. Shapiro, P. F. Shepard, T. Shibayama, M. Shimojima, M. Shochet, A. Sidoti, J. Siegrist, A. Sill, P. Sinervo, P. Singh, A. J. Slaughter, K. Sliwa, C. Smith, F. D. Snider, A. Solodsky, J. Spalding, T. Speer, P. Sphicas, F. Spinella, M. Spiropulu, L. Spiegel, J. Steele, A. Stefanini, J. Strologas, F. Strumia, D. Stuart, K. Sumorok, T. Suzuki, T. Takano, R. Takashima, K. Takikawa, P. Tamburello, M. Tanaka, B. Tannenbaum, M. Tecchio, R. Tesarek, P. K. Teng, K. Terashi, S. Tether, A. S. Thompson, R. Thurman-Keup, P. Tipton, S. Tkaczyk, D. Toback, K. Tollefson, A. Tollestrup, D. Tonelli, H. Toyoda, W. Trischuk, J. F. de Troconiz, J. Tseng, N. Turini, F. Ukegawa, T. Vaiciulis, J. Valls, S. Vejcik, G. Velev, G. Veramendi, R. Vidal, I. Vila, R. Vilar, I. Volobouev, M. von der Mey, D. Vucinic, R. G. Wagner, R. L. Wagner, N. B. Wallace, Z. Wan, C. Wang, M. J. Wang, B. Ward, S. Waschke, T. Watanabe, D. Waters, T. Watts, R. Webb, H. Wenzel, W. C. Wester, A. B. Wicklund, E. Wicklund, T. Wilkes, H. H. Williams, P. Wilson, B. L. Winer, D. Winn, S. Wolbers, D. Wolinski, J. Wolinski, S. Wolinski, S. Worm, X. Wu, J. Wyss, W. Yao, G. P. Yeh, P. Yeh, J. Yoh, C. Yosef, T. Yoshida, I. Yu, S. Yu, Z. Yu, A. Zanetti, F. Zetti, S. Zucchelli, Clark, Allan Geoffrey, Kambara, Hisanori, Speer, Thomas, Strumia Michelini, Federica, and Wu, Xin

Subjects
Physics, Quantum chromodynamics, Coupling constant, Particle physics, General Physics and Astronomy, ddc:500.2, Gluon, Renormalization, Distribution function, Production (computer science), High Energy Physics::Experiment, Nuclear Experiment, Energy (signal processing), Boson
Abstract

We report a measurement of the strong coupling constant, ${\ensuremath{\alpha}}_{s}({M}_{Z})$, extracted from inclusive jet production in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1800\mathrm{GeV}$. The QCD prediction for the evolution of ${\ensuremath{\alpha}}_{s}$ with jet transverse energy ${E}_{T}$ is tested over the range $40l{E}_{T}l450\mathrm{GeV}$ using ${E}_{T}$ for the renormalization scale. The data show good agreement with QCD in the region below 250 GeV. The value of ${\ensuremath{\alpha}}_{s}$ at the mass of the ${Z}^{0}$ boson averaged over the range $40l{E}_{T}l250\mathrm{GeV}$ is found to be ${\ensuremath{\alpha}}_{s}({M}_{Z})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.1178\ifmmode\pm\else\textpm\fi{}0.0001(\mathrm{stat}{)}_{\ensuremath{-}0.0095}^{+0.0081}(\mathrm{expt}.\mathrm{syst})$. The associated theoretical uncertainties are mainly due to the choice of renormalization scale $({+6%}{\ensuremath{-}4%})$ and input parton distribution functions $(5%)$.

Published
2016

28. Fermi-LAT Observations of the Gamma-Ray Burst GRB 130427A

Author

P. A. Jenke, Brian L Winer, Soebur Razzaque, A. A. Moiseev, L. R. Cominsky, Igor V. Moskalenko, Melissa Gibby, Yoshiyuki Inoue, Justin D. Finke, Olaf Reimer, Katsuaki Asano, Robert D. Preece, F. Loparco, E. Moretti, André Schulz, Akira Okumura, George Younes, Matthew G. Baring, D. Byrne, William S. Paciesas, Chryssa Kouveliotou, C. Favuzzi, Judith Racusin, Melissa Pesce-Rollins, Charles A. Meegan, Robert R. Rando, T. Jogler, S. J. Fegan, Luca Baldini, J. G. Thayer, W. B. Focke, P. Spinelli, Sylvain Guiriec, Ryo Yamazaki, P. N. Bhat, Alex Drlica-Wagner, Shuze Zhu, A. von Kienlin, Vandiver Chaplin, Francesco Giordano, Anne M. Diekmann, M. E. Monzani, Jean Ballet, T. A. Porter, Hoi-Fung Yu, A. Franckowiak, J. Michael Burgess, G. Godfrey, W. N. Johnson, W. B. Atwood, Nicola Omodei, S. Rainò, Jeffrey D. Scargle, J. R. Cummings, J. S. Perkins, R. A. Cameron, Tsunefumi Mizuno, R. E. Hughes, Denis Bastieri, Misty Giles, Nicola Giglietto, Rodrigo Nemmen, Shaolin Xiong, Stefano Ciprini, D. Hadasch, S. Germani, K. S. Wood, T. Ohsugi, Eleonora Troja, Stefan Funk, Colleen A. Wilson-Hodge, P. Bruel, G. Chiaro, D. Horan, F. de Palma, A. C. Collazzi, Julie McEnery, V. Pelassa, A. J. van der Horst, Neil Gehrels, L. Di Venere, David Gruber, J. E. Grove, Yasushi Fukazawa, E. J. Siskind, Hiromitsu Takahashi, Valerie Connaughton, A. De Angelis, Adam Goldstein, M. Mayer, V. La Parola, D. J. Thompson, Carmelo Sgrò, G. Tosti, M. N. Lovellette, P. A. Caraveo, Persis S. Drell, M. Roth, Gudlaugur Johannesson, D. Kocevski, V. Vasileiou, Marco Ajello, J. B. Thayer, J. Lande, Jonathan Granot, S. Murgia, P. Fusco, E. Nuss, David Paneque, Sheila McBreen, M. Kuss, T. L. Usher, Francesco Longo, S. Buson, F. Piron, Giacomo Vianello, Masanori Ohno, Felix Ryde, W. H. Cleveland, Emanuele Bonamente, Charles D. Dermer, Magnus Axelsson, Alice K. Harding, I. A. Grenier, Markus Ackermann, Justin Vandenbroucke, Michael S. Briggs, Vahé Petrosian, Luca Latronico, Jürgen Knödlseder, Gloria Spandre, P. M. Saz Parkinson, Ronaldo Bellazzini, Johann Cohen-Tanugi, R. Desiante, T. Kawano, M. Tinivella, Elizabeth C. Ferrara, Guido Barbiellini, Stephen F. Foley, G. A. Caliandro, C. C. Cheung, M. Deklotz, Elisabetta Bissaldi, E. Hays, A. Morselli, F. Gargano, M. Orienti, V. Vitale, J. Bregeon, R. Claus, Alberto Sartori, Y. Hanabata, L. Tibaldo, G. Pivato, A. Reimer, M. Brigida, D. Tierney, M. N. Mazziotta, Eda Sonbas, Arne Rau, Giancarlo Cusumano, Claudia Cecchi, S. Larsson, Diego F. Torres, Gerard Fitzpatrick, S. Cutini, R. M. Kippen, James Chiang, M. Hayashida, Hiroyasu Tajima, Jan Conrad, R. Buehler, Peter F. Michelson, Marcello Giroletti, Eric Charles, Steven Ritz, A. Chekhtman, P. Lubrano, Keith Bechtol, M. Razzano, Filippo D'Ammando, Ackermann M, Ajello M, Asano K, Atwood WB, Axelsson M, Baldini L, Ballet J, Barbiellini G, Baring MG, Bastieri D, Bechtol K, Bellazzini R, Bissaldi E, Bonamente E, Bregeon J, Brigida M, Bruel P, Buehler R, Burgess JM, Buson S, Caliandro GA, Cameron RA, Caraveo PA, Cecchi C, Chaplin V, Charles E, Chekhtman A, Cheung CC, Chiang J, Chiaro G, Ciprini S, Claus R, Cleveland W, Cohen-Tanugi J, Collazzi A, Cominsky LR, Connaughton V, Conrad J, Cutini S, DAmmando F, de Angelis A, DeKlotz M, de Palma F, Dermer CD, Desiante R, Diekmann A, Di Venere L, Drell PS, Drlica-Wagner A, Favuzzi C, Fegan SJ, Ferrara EC, Finke J, Fitzpatrick G, Focke WB, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gehrels N, Germani S, Gibby M, Giglietto N, Giles M, Giordano F, Giroletti M, Godfrey G, Granot J, Grenier IA, Grove JE, Gruber D, Guiriec S, Hadasch D, Hanabata Y, Harding AK, Hayashida M, Hays E, Horan D, Hughes RE, Inoue Y, Jogler T, Johannesson G, Johnson WN, Kawano T, Knodlseder J, Kocevski D, Kuss M, Lande J, Larsson S, Latronico L, Longo F, Loparco F, Lovellette MN, Lubrano P, Mayer M, Mazziotta MN, McEnery JE, Michelson PF, Mizuno T, Moiseev AA, Monzani ME, Moretti E, Morselli A, Moskalenko IV, Murgia S, Nemmen R, Nuss E, Ohno M, Ohsugi T, Okumura A, Omodei N, Orienti M, Paneque D, Pelassa V, Perkins JS, Pesce-Rollins M, Petrosian V, Piron F, Pivato G, Porter TA, Racusin JL, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Ritz S, Roth M, Ryde F, Sartori A, Parkinson PMS, Scargle JD, Schulz A, Sgro C, Siskind EJ, Sonbas E, Spandre G, Spinelli P, Tajima H, Takahashi H, Thayer JG, Thayer JB, Thompson DJ, Tibaldo L, Tinivella M, Torres DF, Tosti G, Troja E, Usher TL, Vandenbroucke J, Vasileiou V, Vianello G, Vitale V, Winer BL, Wood KS, Yamazaki R, Younes G, Yu HF, Zhu SJ, Bhat PN, Briggs MS, Byrne D, Foley S, Goldstein A, Jenke P, Kippen RM, Kouveliotou C, McBreen S, Meegan C, Paciesas WS, Preece R, Rau A, Tierney D, van der Horst AJ, von Kienlin A, Wilson-Hodge C, Xiong S, Cusumano G, La Parola V, Cummings JR, M., Ackermann, M., Ajello, K., Asano, W. B., Atwood, M., Axelsson, L., Baldini, J., Ballet, BARBIELLINI AMIDEI, Guido, M. G., Baring, D., Bastieri, K., Bechtol, R., Bellazzini, Bissaldi, Elisabetta, E., Bonamente, J., Bregeon, M., Brigida, P., Bruel, R., Buehler, J. M., Burge, S., Buson, G. A., Caliandro, R. A., Cameron, P. A., Caraveo, C., Cecchi, V., Chaplin, E., Charle, A., Chekhtman, C. C., Cheung, J., Chiang, G., Chiaro, S., Ciprini, R., Clau, W., Cleveland, J., Cohen Tanugi, A., Collazzi, L. R., Cominsky, V., Connaughton, J., Conrad, S., Cutini, F., D'Ammando, A. d., Angeli, M., Deklotz, F. d., Palma, C. D., Dermer, R., Desiante, A., Diekmann, L. D., Venere, P. S., Drell, A., Drlica Wagner, C., Favuzzi, S. J., Fegan, E. C., Ferrara, J., Finke, G., Fitzpatrick, W. B., Focke, A., Franckowiak, Y., Fukazawa, S., Funk, P., Fusco, F., Gargano, N., Gehrel, S., Germani, M., Gibby, N., Giglietto, M., Gile, F., Giordano, M., Giroletti, G., Godfrey, J., Granot, I. A., Grenier, J. E., Grove, D., Gruber, S., Guiriec, D., Hadasch, Y., Hanabata, A. K., Harding, M., Hayashida, E., Hay, D., Horan, R. E., Hughe, Y., Inoue, T., Jogler, G., Johannesson, W. N., Johnson, T., Kawano, J., Knoedlseder, D., Kocevski, M., Ku, J., Lande, S., Larsson, L., Latronico, Longo, Francesco, F., Loparco, M. N., Lovellette, P., Lubrano, M., Mayer, M. N., Mazziotta, J. E., Mcenery, P. F., Michelson, T., Mizuno, A. A., Moiseev, M. E., Monzani, E., Moretti, A., Morselli, I. V., Moskalenko, S., Murgia, R., Nemmen, E., Nu, M., Ohno, T., Ohsugi, A., Okumura, N., Omodei, M., Orienti, D., Paneque, V., Pelassa, J. S., Perkin, M., Pesce Rollin, V., Petrosian, F., Piron, G., Pivato, T. A., Porter, J. L., Racusin, S., Raino, R., Rando, M., Razzano, S., Razzaque, A., Reimer, O., Reimer, S., Ritz, M., Roth, F., Ryde, A., Sartori, P. M., Saz, J. D., Scargle, A., Schulz, C., Sgro, E. J., Siskind, E., Sonba, G., Spandre, P., Spinelli, H., Tajima, H., Takahashi, J. G., Thayer, J. B., Thayer, D. J., Thompson, L., Tibaldo, M., Tinivella, D. F., Torre, G., Tosti, E., Troja, T. L., Usher, J., Vandenbroucke, V., Vasileiou, G., Vianello, V., Vitale, B. L., Winer, K. S., Wood, R., Yamazaki, G., Youne, H. . ., F., S. J., Zhu, P. N., Bhat, M. S., Brigg, D., Byrne, S., Foley, A., Goldstein, P., Jenke, R. M., Kippen, C., Kouveliotou, S., Mcbreen, C., Meegan, W. S., Paciesa, R., Preece, A., Rau, D., Tierney, A. J., Van, A. v., Kienlin, C., Wilson Hodge, S., Xiong, G., Cusumano, V. L., Parola, J. R., Cummings, and High Energy Astrophys. & Astropart. Phys (API, FNWI)

Subjects
Astrophysics::High Energy Astrophysical Phenomena, SPECTRAL COMPONENT, Synchrotron radiation, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, LARGE-AREA TELESCOPE, HIGH-ENERGY EMISSION, AFTERGLOWS, PROMPT, law.invention, Telescope, Spitzer Space Telescope, law, Astrophysics::Galaxy Astrophysics, Physics, Multidisciplinary, Gamma ray, GRB 130427A, Astronomy, Afterglow, GRB, Fermi-LAT, ddc:500, Astrophysics - High Energy Astrophysical Phenomena, Gamma-ray burst, Fermi Gamma-ray Space Telescope
Abstract

The observations of the exceptionally bright gamma-ray burst (GRB) 130427A by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope provide constraints on the nature of such unique astrophysical sources. GRB 130427A had the largest fluence, highest-energy photon (95 GeV), longest $\gamma$-ray duration (20 hours), and one of the largest isotropic energy releases ever observed from a GRB. Temporal and spectral analyses of GRB 130427A challenge the widely accepted model that the non-thermal high-energy emission in the afterglow phase of GRBs is synchrotron emission radiated by electrons accelerated at an external shock., Comment: 30 pages, 6 figures. Accepted for publication in Science. Corresponding authors: S. Zhu (sjzhu@umd.edu); J. Chiang (jchiang@slac.stanford.edu); C. Dermer (charles.dermer@nrl.navy.mil); N. Omodei (nicola.omodei@stanford.edu); G. Vianello (giacomov@slac.stanford.edu); S. Xiong (Shaolin.Xiong@uah.edu)

Published
2014

29. The NuMI neutrino beam

Author

J. Urheim, David Petyt, S. Moed Sher, S. Phan-Budd, A. Sousa, Francisco Yumiceva, R. L. Talaga, N. E. Devenish, P. J. Litchfield, S. R. Mishra, M.L. Wong-Squires, J. A. Musser, S. Avvakumov, R. Reilly, M. Olsen, William L. Barrett, T. Yang, D. E. Jaffe, G. Tzanakos, R. H. Milburn, J. Hylen, B. Viren, S. C. Tognini, G. Koizumi, Niki Saoulidou, W. A. Mann, S. Murgia, J. K. Nelson, Maury Goodman, B. Baller, A. Perch, D. Michael, C. M. Castromonte, S. Childress, J. Johnstone, J. Biggs, R. J. Nichol, Alec Habig, P. Schreiner, D. A. Jensen, M. M. Medeiros, M. A. Thomson, K. Vaziri, Stanley G. Wojcicki, J. P. Cravens, R. H. Bernstein, A. Para, A. V. Devan, J. J. Evans, M. M. Pfützner, P. Shanahan, A. Holin, D. Crane, H. R. Gallagher, N. Tagg, Christopher G. White, R. C. Webb, J. A. Thompson, E. Falk, A. Radovic, C. Rosenfeld, D. A. Harris, M. P. Andrews, M. C. Sanchez, R. B. Pahlka, Brajesh C Choudhary, E. A. Peterson, R. Ford, Leigh H. Whitehead, N. Poonthottathil, A. C. Weber, A. R. Erwin, G.D. Barr, Junwei Huang, L. Loiacono, J. Schneps, D. Bogert, D. S. Ayres, R. Hatcher, K. Bourkland, L. H. Whitehead, J. K. De Jong, J.H. Cobb, Karol Lang, G. Vogel, Harvey B Newman, R. Andrews, P. Adamson, D. J. Harding, D. Pushka, A. Marchionni, Scott Osprey, X. Tian, I. Anghel, I. Trostin, Gregory J Pawloski, R. A. Rameika, John Miller, S. M. S. Kasahara, M. V. Diwan, Jorge G. Morfin, Juergen Thomas, N. Mayer, Ahmed Ibrahim, S. V. Cao, A. Aurisano, G. M. Irwin, C. James, Kevin Anderson, G. J. Feldman, J. R. Meier, N. Graf, R. Webber, Caleb Smith, J. M. Paley, W. Smart, A. A. Wehmann, D. Cronin-Hennessy, A. Stefanik, J. A. Nowak, D. Tinsley, P. Gouffon, R. Mehdiyev, P. Vahle, R. A. Gomes, T. Patzak, G. Tassotto, D. J. Boehnlein, T. H. Fields, C. Laughton, E. Villegas, L. Sauer, R. Zwaska, D. Naples, S. Hays, J. O׳Connor, M. D. Messier, C. L. McGivern, D. Indurthy, Rakesh Sharma, J. Ratchford, C. D. Moore, Z. Isvan, L. Mualem, W. H. Miller, G. J. Bock, D. Torretta, Sacha E Kopp, R. Gran, L. Corwin, S. L. Mufson, G. Lefeuvre, V. Zarucheisky, V. Bocean, T. Kafka, M. Bishai, M. Orchanian, K. Grzelak, M. V. Frohne, P. Prieto, J. Hartnell, B. C. Barish, R. Ducar, Philip Harris, H. A. Rubin, R. B. Patterson, K. Ruddick, Joao A B Coelho, V. Garkusha, D. Augustine, Ž Pavlović, D. Schoo, A. E. Kreymer, P. Lucas, W. P. Oliver, Marvin L Marshak, Ken Heller, M. J. Murtagh, M. Kordosky, S. R. Hahn, Andrew Blake, N. Grossman, A. Timmons, A. Schreckenberger, Carlos Escobar, R. K. Plunkett, X. Qiu, R. Toner, B. Rebel, AstroParticule et Cosmologie (APC (UMR_7164)), 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)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), AstroParticule et Cosmologie ( APC - UMR 7164 ), 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 Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)

Subjects
Accelerator Physics (physics.acc-ph), Target, Nuclear and High Energy Physics, Particle physics, beam monitoring, Physics::Instrumentation and Detectors, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], FOS: Physical sciences, beam transport, neutrino: beam, Neutrino beam, 7. Clean energy, 01 natural sciences, NuMI, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), beam: alignment, Long Baseline, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], hardware, Fermilab, [ PHYS.PHYS.PHYS-ACC-PH ] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Neutrinos, 010306 general physics, Instrumentation, activity report, Physics, 010308 nuclear & particles physics, Monitoring system, Beam, Main injector, Main Injector, Physics::Accelerator Physics, Physics - Accelerator Physics, High Energy Physics::Experiment, Neutrino, Beam (structure), performance
Abstract

International audience; This paper describes the hardware and operations of the Neutrinos at the Main Injector (NuMI) beam at Fermilab. It elaborates on the design considerations for the beam as a whole and for individual elements. The most important design details of individual components are described. Beam monitoring systems and procedures, including the tuning and alignment of the beam and NuMI long-term performance, are also discussed.

Published
2016

30. FERMI-LAT OBSERVATIONS of HIGH-ENERGY γ-RAY EMISSION TOWARD the GALACTIC CENTER

Author

J. D. Magill, W. B. Atwood, M. Ohno, Nicola Giglietto, T. Ohsugi, Eleonora Troja, Andrea Albert, R. Desiante, Paolo Giommi, R. A. Cameron, F. Spada, R. Caputo, Hiroyasu Tajima, James Chiang, Roger Blandford, Jan Conrad, Nicola Omodei, J. F. Ormes, Stefan Larsson, P. Bruel, Carmelo Sgrò, Riccardo Rando, E. Nuss, T. J. Brandt, Johan Bregeon, G. Jóhannesson, A. Morselli, Stephan Zimmer, David Paneque, M. Kuss, Eugenio Bottacini, Alberto Manfreda, Liang Li, Keith Bechtol, G. Godfrey, F. de Palma, F. Piron, Denis Bastieri, M. Gustafsson, M. E. Monzani, C. Karwin, Guido Barbiellini, D.J. Suson, A. A. Moiseev, Alice K. Harding, Jingcheng Li, S. Rainò, Tsunefumi Mizuno, F. Loparco, G. A. Gomez-Vargas, P. M. Saz Parkinson, R. Buehler, M. Razzano, G. Chiaro, Elisabetta Bissaldi, Filippo D'Ammando, A. Reimer, G. Pivato, E. J. Siskind, M. N. Lovellette, D. Malyshev, H. Takahashi, D.F. Torres, D. Horan, R. Bonino, P. Fusco, Peter F. Michelson, Marcello Giroletti, P. A. Caraveo, T. Glanzman, S. Maldera, A. S. Johnson, S. Cutini, Melissa Pesce-Rollins, Y. Uchiyama, T. Kamae, Claudia Cecchi, Francesco Longo, Persis S. Drell, Steven Ritz, T. A. Porter, E. Orlando, L. R. Cominsky, Igor V. Moskalenko, Luca Latronico, Olaf Reimer, A. Chekhtman, Sylvain Guiriec, John W. Hewitt, M. Caragiulo, Elizabeth C. Ferrara, D.A. Smith, Warit Mitthumsiri, Mn Mazziotta, P. Lubrano, C. Favuzzi, G. Zaharijas, P. Spinelli, Francesco Giordano, Marco Ajello, J. B. Thayer, T. Jogler, Dario Gasparrini, K. S. Wood, B.L. Winer, S. Buson, Stefano Ciprini, Miguel A. Sánchez-Conde, F. Gargano, M. Mayer, Elliott D. Bloom, Johann Cohen-Tanugi, L. Di Venere, Jürgen Knödlseder, S. Murgia, G. A. Caliandro, I. A. Grenier, Ronaldo Bellazzini, Gloria Spandre, A. B. Hill, A. De Angelis, G. Tosti, Giacomo Vianello, Laboratoire Univers et Particules de Montpellier (LUPM), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), 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, Institut de recherche en astrophysique et planétologie (IRAP), 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), Université de Toulouse (UT), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées, Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), 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), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), ITA, Ajello M, Albert A, Atwood WB, Barbiellini G, Bastieri D, Bechtol K, Bellazzini R, Bissaldi E, Blandford RD, Bloom ED, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caputo R, Caragiulo M, Carave PA, Cecchi C, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Cohen-Tanugi J, Cominsky LR, Conrad J, Cutini S, DAmmando F, de Angelis A, de Palma F, Desiante R, Di Venere L, Drell PS, Favuzzi C, Ferrara EC, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giommi P, Giordano F, Giroletti M, Glanzman T, Godfrey G, Gomez-Vargas GA, Grenier IA, Guiriec S, Gustafsson M, Harding AK, Hewitt JW, Hill AB, Horan D, Jogler T, Johannesson G, Johnson AS, Kamae T, Karwin C, Knodlseder J, Kuss M, Larsson S, Latronico L, Li J, Li L, Longo F, Loparco F, Lovellette MN, Lubrano P, Magill J, Maldera S, Malyshev D, Manfreda A, Mayer M, Mazziotta MN, Michelson PF, Mitthumsiri W, Mizuno T, Moiseev AA, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Nuss E, Ohno M, Ohsugi T, Omodei N, Orlando E, Ormes JF, Paneque D, Pesce-Rollins M, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Reimer A, Reimer O, Ritz S, Sanchez-Conde M, Parkinson PMS, Sgro C, Siskind EJ, Smith DA, Spada F, Spandre G, Spinelli P, Suson DJ, Tajima H, Takahashi H, Thayer JB, Torres DF, Tosti G, Troja E, Uchiyama Y, Vianello G, Winer BL, Wood KS, Zaharijas G, Zimmer S, Ajello, M., Albert, A., Atwood, W. B., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caputo, R., Caragiulo, M., Caraveo, P. A., Cecchi, C., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Cohen Tanugi, J., Cominsky, L. R., Conrad, J., Cutini, S., D'Ammando, F., De Angelis, A., De Palma, F., Desiante, R., Di Venere, L., Drell, P. S., Favuzzi, C., Ferrara, E. C., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Gomez Vargas, G. A., Grenier, I. A., Guiriec, S., Gustafsson, M., Harding, A. K., Hewitt, J. W., Hill, A. B., Horan, D., Jogler, T., Jóhannesson, G., Johnson, A. S., Kamae, T., Karwin, C., Knödlseder, J., Kuss, M., Larsson, S., Latronico, L., Li, J., Li, L., Longo, Francesco, Loparco, F., Lovellette, M. N., Lubrano, P., Magill, J., Maldera, S., Malyshev, D., Manfreda, A., Mayer, M., Mazziotta, M. N., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nuss, E., Ohno, M., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Pesce Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Ritz, S., Sánchez Conde, M., Saz Parkinson, P. M., Sgrò, C., Siskind, E. J., Smith, D. A., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Tajima, H., Takahashi, H., Thayer, J. B., Torres, D. F., Tosti, G., Troja, E., Uchiyama, Y., Vianello, G., Winer, B. L., Wood, K. S., Zaharijas, G., and Zimmer, S.

Subjects
cosmic rays, Galaxy: center, gamma-rays: general, gamma-rays: ISM, radiation mechanisms: non-thermal, cosmic rays, Galaxy: center, gamma-rays: general, gamma-rays: ISM, radiation mechanisms: non-thermal, Astronomy and Astrophysics, Space and Planetary Science, Astrophysics, 01 natural sciences, High Energy Physics - Experiment, law.invention, law, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Emission spectrum, ISM [gamma-rays], 010303 astronomy & astrophysics, cosmic ray, Physics, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Galactic Center, Gamma ray, center [Galaxy], non-thermal [radiation mechanisms], particle: interaction, High Energy Physics - Phenomenology, gamma ray: emission, cosmic radiation, electron: interaction, [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], Astrophysics - High Energy Astrophysical Phenomena, general [gamma-rays], Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, GLAST, emission: model, Telescope, gas, 0103 physical sciences, structure, Astrophysics::Galaxy Astrophysics, 010308 nuclear & particles physics, background, scattering, nucleus, Astronomy, Astronomy and Astrophysic, Galaxy, Interstellar medium, flux, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], ddc:520, galaxy, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Fermi Gamma-ray Space Telescope
Abstract

The astrophysical journal 819(1), 44 (2016). doi:10.3847/0004-637X/819/1/44, The Fermi Large Area Telescope (LAT) has provided the most detailed view to date of the emission toward the Galactic center (GC) in high-energy γ-rays. This paper describes the analysis of data taken during the first 62 months of the mission in the energy range 1–100 GeV from a 15° × 15° region about the direction of the GC. Specialized interstellar emission models (IEMs) are constructed to enable the separation of the γ-ray emissions produced by cosmic ray particles interacting with the interstellar gas and radiation fields in the Milky Way into that from the inner ~1 kpc surrounding the GC, and that from the rest of the Galaxy. A catalog of point sources for the 15° × 15° region is self-consistently constructed using these IEMs: the First Fermi-LAT Inner Galaxy Point Source Catalog (1FIG). The spatial locations, fluxes, and spectral properties of the 1FIG sources are presented, and compared with γ-ray point sources over the same region taken from existing catalogs. After subtracting the interstellar emission and point-source contributions a residual is found. If templates that peak toward the GC are used to model the positive residual the agreement with the data improves, but none of the additional templates tried account for all of its spatial structure. The spectrum of the positive residual modeled with these templates has a strong dependence on the choice of IEM., Published by Univ.11032, Chicago, Ill. [u.a.]

Published
2016

31. The NuMI neutrino beam

Author

Adamson, P. Anderson, K. Andrews, M. Andrews, R. Anghel, I. Augustine, D. Aurisano, A. Avvakumov, S. Ayres, D.S. Baller, B. Barish, B. Barr, G. Barrett, W.L. Bernstein, R.H. Biggs, J. Bishai, M. Blake, A. Bocean, V. Bock, G.J. Boehnlein, D.J. Bogert, D. Bourkland, K. Cao, S.V. Castromonte, C.M. Childress, S. Choudhary, B.C. Coelho, J.A.B. Cobb, J.H. Corwin, L. Crane, D. Cravens, J.P. Cronin-Hennessy, D. Ducar, R.J. De Jong, J.K. Devan, A.V. Devenish, N.E. Diwan, M.V. Erwin, A.R. Escobar, C.O. Evans, J.J. Falk, E. Feldman, G.J. Fields, T.H. Ford, R. Frohne, M.V. Gallagher, H.R. Garkusha, V. Gomes, R.A. Goodman, M.C. Gouffon, P. Graf, N. Gran, R. Grossman, N. Grzelak, K. Habig, A. Hahn, S.R. Harding, D. Harris, D. Harris, P.G. Hartnell, J. Hatcher, R. Hays, S. Heller, K. Holin, A. Huang, J. Hylen, J. Ibrahim, A. Indurthy, D. Irwin, G.M. Isvan, Z. Jaffe, D.E. James, C. Jensen, D. Johnstone, J. Kafka, T. Kasahara, S.M.S. Koizumi, G. Kopp, S. Kordosky, M. Kreymer, A. Lang, K. Laughton, C. Lefeuvre, G. Ling, J. Litchfield, P.J. Loiacono, L. Lucas, P. Mann, W.A. Marchionni, A. Marshak, M.L. Mayer, N. McGivern, C. Medeiros, M.M. Mehdiyev, R. Meier, J.R. Messier, M.D. Michael, D.G. Milburn, R.H. Miller, J.L. Miller, W.H. Mishra, S.R. Moed Sher, S. Moore, C.D. Morfín, J. Mualem, L. Mufson, S. Murgia, S. Murtagh, M. Musser, J. Naples, D. Nelson, J.K. Newman, H.B. Nichol, R.J. Nowak, J.A. O'Connor, J. Oliver, W.P. Olsen, M. Orchanian, M. Osprey, S. Pahlka, R.B. Paley, J. Para, A. Patterson, R.B. Patzak, T. Pavlović, Z. Pawloski, G. Perch, A. Peterson, E.A. Petyt, D.A. Pfützner, M.M. Phan-Budd, S. Plunkett, R.K. Poonthottathil, N. Prieto, P. Pushka, D. Qiu, X. Radovic, A. Rameika, R.A. Ratchford, J. Rebel, B. Reilly, R. Rosenfeld, C. Rubin, H.A. Ruddick, K. Sanchez, M.C. Saoulidou, N. Sauer, L. Schneps, J. Schoo, D. Schreckenberger, A. Schreiner, P. Shanahan, P. Sharma, R. Smart, W. Smith, C. Sousa, A. Stefanik, A. Tagg, N. Talaga, R.L. Tassotto, G. Thomas, J. Thompson, J. Thomson, M.A. Tian, X. Timmons, A. Tinsley, D. Tognini, S.C. Toner, R. Torretta, D. Trostin, I. Tzanakos, G. Urheim, J. Vahle, P. Vaziri, K. Villegas, E. Viren, B. Vogel, G. Webber, R.C. Weber, A. Webb, R.C. Wehmann, A. White, C. Whitehead, L. Whitehead, L.H. Wojcicki, S.G. Wong-Squires, M.L. Yang, T. Yumiceva, F.X. Zarucheisky, V. Zwaska, R.

Subjects
Physics::Instrumentation and Detectors, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract

This paper describes the hardware and operations of the Neutrinos at the Main Injector (NuMI) beam at Fermilab. It elaborates on the design considerations for the beam as a whole and for individual elements. The most important design details of individual components are described. Beam monitoring systems and procedures, including the tuning and alignment of the beam and NuMI long-term performance, are also discussed. © 2015 Elsevier B.V. All rights reserved.

Published
2016

32. Deep view of the Large Magellanic Cloud with six years of Fermi-LAT observations

Author

T. Ohsugi, Eleonora Troja, Olaf Reimer, W. B. Atwood, T. J. Brandt, Jean Ballet, F. Piron, Andrea Albert, C. Favuzzi, Nicola Giglietto, Stefano Ciprini, P. Martin, M. Mayer, Elliott D. Bloom, J. F. Ormes, M. Razzano, Stephan Zimmer, T. A. Porter, James Chiang, Filippo D'Ammando, Dario Gasparrini, Alice K. Harding, E. J. Siskind, P. A. Caraveo, Denis Bastieri, Jingcheng Li, Persis S. Drell, Miguel A. Sánchez-Conde, S. Rainò, Roger W. Romani, R. A. Cameron, A. Chekhtman, Tsunefumi Mizuno, D. Horan, P. Lubrano, André Schulz, M. E. Monzani, David A. Smith, G. Chiaro, F. Loparco, M. N. Mazziotta, R. Desiante, A. Reimer, Markus Ackermann, Seth Digel, Hiromitsu Takahashi, Elisabetta Bissaldi, S. Maldera, G. Pivato, A. Morselli, Eric Charles, E. Orlando, Melissa Pesce-Rollins, D. J. Suson, I. A. Grenier, F. Gargano, S. Cutini, E. Cavazzuti, Luca Latronico, R. Bonino, Gloria Spandre, Claudia Cecchi, Elizabeth C. Ferrara, Gudlaugur Johannesson, Johann Cohen-Tanugi, M.-H. Grondin, S. Murgia, W. B. Focke, G. A. Caliandro, P. Spinelli, F. Spada, Francesco Giordano, Stefan Larsson, Luca Baldini, Lucas Guillemot, Sylvain Guiriec, Liang Li, Guido Barbiellini, M. Orienti, Matthew Wood, P. Fusco, Francesco Longo, L. Tibaldo, M. Caragiulo, G. Godfrey, F. de Palma, Diego F. Torres, Pascal Bruel, R. Buehler, Peter F. Michelson, Carmelo Sgrò, Riccardo Rando, E. Nuss, David Paneque, M. Kuss, J. B. Thayer, A. Franckowiak, A. B. Hill, Johan Bregeon, A. De Angelis, G. Tosti, Giacomo Vianello, Jürgen Knödlseder, Ronaldo Bellazzini, Deutsches Elektronen-Synchrotron [Zeuthen] (DESY), Helmholtz-Gemeinschaft = Helmholtz Association, Santa Cruz Institute for Particle Physics (SCIPP), University of California [Santa Cruz] (UCSC), University of California-University of California, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Univers et Particules de Montpellier (LUPM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), 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), SLAC National Accelerator Laboratory (SLAC), Stanford University, Istituto Nazionale di Fisica Nucleare, sezione di Bari (INFN, sezione di Bari), Istituto Nazionale di Fisica Nucleare (INFN), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Unité Scientifique de la Station de Nançay (USN), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National d’Études Spatiales [Paris] (CNES), GSFC Astrophysics Science Division, NASA Goddard Space Flight Center (GSFC), Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), Royal Institute of Technology [Stockholm] (KTH ), Institut d'Estudis Espacials de Catalunya (IEEC-CSIC), Hansen Experimental Physics Lab [Stanford] (HEPL), Hiroshima University, ITA, University of California [Santa Cruz] (UC Santa Cruz), University of California (UC)-University of California (UC), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-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 de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Ackermann M, Albert A, Atwood WB, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bellazzini R, Bissaldi E, Bloom ED, Bonino R, Brandt TJ, Bregeon J, Bruel P, Buehler R, Caliandro GA, Cameron RA, Caragiulo M, Caraveo PA, Cavazzuti E, Cecchi C, Charles E, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Cohen-Tanugi J, Cutini S, DAmmando F, de Angelis A, de Palma F, Desiante R, Digel SW, Drell PS, Favuzzi C, Ferrara EC, Focke WB, Franckowiak A, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Godfrey G, Grenier IA, Grondin MH, Guillemot L, Guiriec S, Harding AK, Hill AB, Horan D, Johannesson G, Knodlseder J, Kuss M, Larsson S, Latronico L, Li J, Li L, Longo F, Loparco F, Lubrano P, Maldera S, Martin P, Mayer M, Mazziotta MN, Michelson PF, Mizuno T, Monzani ME, Morselli A, Murgia S, Nuss E, Ohsugi T, Orienti M, Orlando E, Ormes JF, Paneque D, Pesce-Rollins M, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Reimer A, Reimer O, Romani RW, Sanchez-Conde M, Schulz A, Sgro C, Siskind EJ, Smith DA, Spada F, Spandre G, Spinelli P, Suson DJ, Takahashi H, Thayer JB, Tibaldo L, Torres DF, Tosti G, Troja E, Vianello G, Wood M, Zimmer S, Ackermann, M., Albert, A., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Bloom, E. D., Bonino, R., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Cohen Tanugi, J., Cutini, S., D'Ammando, F., De Angelis, A., De Palma, F., Desiante, R., Digel, S. W., Drell, P. S., Favuzzi, C., Ferrara, E. C., Focke, W. B., Franckowiak, A., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Godfrey, G., Grenier, I. A., Grondin, M. H., Guillemot, L., Guiriec, S., Harding, A. K., Hill, A. B., Horan, D., Jóhannesson, G., Knödlseder, J., Kuss, M., Larsson, S., Latronico, L., Li, J., Li, L., Longo, Francesco, Loparco, F., Lubrano, P., Maldera, S., Martin, P., Mayer, M., Mazziotta, M. N., Michelson, P. F., Mizuno, T., Monzani, M. E., Morselli, A., Murgia, S., Nuss, E., Ohsugi, T., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Pesce Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Romani, R. W., Sánchez Conde, M., Schulz, A., Sgrò, C., Siskind, E. J., Smith, D. A., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Takahashi, H., Thayer, J. B., Tibaldo, L., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, M., Zimmer, S., Helmholtz-Gemeinschaft, Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Stanford Linear Accelerator Center (SLAC), Stanford University [Stanford], National Institute for Nuclear Physics (INFN), Université d'Orléans (UO)-Observatoire des Sciences de l'Univers en région Centre (OSUC), PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), GFSC Astrophysics Science Division, and Hansen Experimental Physics Laboratory (HEPL)

Subjects
[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Milky Way, Astrophysics::High Energy Astrophysical Phenomena, Magellanic Cloud, Population, Cosmic ray, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, cosmic rays, 0103 physical sciences, Magellanic Clouds, Astrophysics::Solar and Stellar Astrophysics, Large Magellanic Cloud, education, Supernova remnant, gamma rays: galaxies / Magellanic Clouds / cosmic rays, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, education.field_of_study, Line-of-sight, galaxie [Gamma rays], 010308 nuclear & particles physics, Cosmic rays, Gamma rays: galaxies, Astronomy and Astrophysics, Space and Planetary Science, Astronomy, Astronomy and Astrophysic, Galaxy, ddc:520, Fermi Gamma-ray Space Telescope
Abstract

Context. The nearby Large Magellanic Cloud (LMC) provides a rare opportunity of a spatially resolved view of an external star-forming galaxy in γ-rays. The LMC was detected at 0.1-100 GeV as an extended source with CGRO/EGRET and using early observations with the Fermi-LAT. The emission was found to correlate with massive star-forming regions and to be particularly bright towards 30 Doradus. Aims: Studies of the origin and transport of cosmic rays (CRs) in the Milky Way are frequently hampered by line-of-sight confusion and poor distance determination. The LMC offers a complementary way to address these questions by revealing whether and how the γ-ray emission is connected to specific objects, populations of objects, and structures in the galaxy. Methods: We revisited the γ-ray emission from the LMC using about 73 months of Fermi-LAT P7REP data in the 0.2-100 GeV range. We developed a complete spatial and spectral model of the LMC emission, for which we tested several approaches: a simple geometrical description, template-fitting, and a physically driven model for CR-induced interstellar emission. Results: In addition to identifying PSR J0540-6919 through its pulsations, we find two hard sources positionally coincident with plerion N 157B and supernova remnant N 132D, which were also detected at TeV energies with H.E.S.S. We detect an additional soft source that is currently unidentified. Extended emission dominates the total flux from the LMC. It consists of an extended component of about the size of the galaxy and additional emission from three to four regions with degree-scale sizes. If it is interpreted as CRs interacting with interstellar gas, the large-scale emission implies a large-scale population of ~1-100 GeV CRs with a density of ~30% of the local Galactic value. On top of that, the three to four small-scale emission regions would correspond to enhancements of the CR density by factors 2 to 6 or higher, possibly more energetic and younger populations of CRs compared to the large-scale population. An alternative explanation is that this is emission from an unresolved population of at least two dozen objects, such as pulsars and their nebulae or supernova remnants. This small-scale extended emission has a spatial distribution that does not clearly correlate with known components of the LMC, except for a possible relation to cavities and supergiant shells. Conclusions: The Fermi-LAT GeV observations allowed us to detect individual sources in the LMC. Three of the newly discovered sources are associated with rare and extreme objects. The 30 Doradus region is prominent in GeV γ-rays because PSR J0540-6919 and N 157B are strong emitters. The extended emission from the galaxy has an unexpected spatial distribution, and observations at higher energies and in radio may help to clarify its origin. FITS file of Fig. 1 is only available at the CDS via anonymous ftp to href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/586/A71">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/586/A71

Published
2016

33. Fermi large area telescope detection of extended gamma-ray emission from the radio galaxy Fornax A

Author

P. Lubrano, A. De Angelis, G. Tosti, Giacomo Vianello, M. Caragiulo, G. Godfrey, K. S. Wood, Ronaldo Bellazzini, J. D. Magill, F. de Palma, Gudlaugur Johannesson, R. Bonino, Seth Digel, A. B. Hill, J. Schmid, Hiromitsu Takahashi, Roger Blandford, A. Reimer, Liang Li, M. N. Mazziotta, Igor V. Moskalenko, E. Orlando, T. Ohsugi, Eleonora Troja, Guido Barbiellini, Olaf Reimer, S. Kensei, R. Buehler, S. Maldera, Matteo Negro, T. Jogler, A. Morselli, Eric Charles, T. J. Brandt, Dario Gasparrini, S. Rainò, Marco Ajello, Francesco Longo, Tsunefumi Mizuno, J. B. Thayer, Peter F. Michelson, Marcello Giroletti, M. Orienti, C. Favuzzi, W. McConville, G. Chiaro, F. Piron, F. Costanza, Masanori Ohno, Yasushi Fukazawa, Jean Ballet, S. Cutini, Diego F. Torres, J. W. Hewitt, C. C. Cheung, Markos Georganopoulos, F. Gargano, Stefano Ciprini, Stephan Zimmer, M. Mayer, Elliott D. Bloom, Jingcheng Li, Johan Bregeon, M. Di Mauro, Stefan Funk, Sara Buson, Julie McEnery, E. J. Siskind, S. J. Fegan, T. A. Porter, Carmelo Sgrò, Riccardo Rando, E. Hays, D. Simone, E. Nuss, David Paneque, P. Fusco, M. E. Monzani, F. Loparco, M. Kuss, D. J. Thompson, Markus Ackermann, Luca Latronico, Elizabeth C. Ferrara, Claudia Cecchi, Melissa Pesce-Rollins, I. A. Grenier, N. Di Lalla, Luca Baldini, Sylvain Guiriec, E. Cavazzuti, David H. Green, R. Desiante, Gloria Spandre, Johann Cohen-Tanugi, L. Di Venere, S. Murgia, G. A. Caliandro, J. F. Ormes, A. Chekhtman, Warit Mitthumsiri, W. B. Focke, P. Spinelli, Francesco Giordano, R. A. Cameron, P. Bruel, J. M. Cohen, M. Razzano, Filippo D'Ammando, F. Spada, J. S. Perkins, Nicola Giglietto, Stefan Larsson, P. A. Caraveo, Denis Bastieri, Łukasz Stawarz, Elisabetta Bissaldi, G. Pivato, Alberto Manfreda, David S. Davis, Matthew Wood, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Université Montpellier 2 - Sciences et Techniques (UM2), 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), Fermi-LAT, Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiaro, G., Ciprini, S., Cohen, J. M., Cohen Tanugi, J., Costanza, F., Cutini, S., D'Ammando, F., Davis, D. S., De Angelis, A., De Palma, F., Desiante, R., Digel, S. W., Di Lalla, N., Di Mauro, M., Di Venere, L., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Focke, W. B., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Georganopoulos, M., Giglietto, N., Giordano, F., Giroletti, M., Godfrey, G., Green, D., Grenier, I. A., Guiriec, S., Hays, E., Hewitt, J. W., Hill, A. B., Jogler, T., Jóhannesson, G., Kensei, S., Kuss, M., Larsson, S., Latronico, L., Li, J., Li, L., Longo, Francesco, Loparco, F., Lubrano, P., Magill, J. D., Maldera, S., Manfreda, A., Mayer, M., Mazziotta, M. N., Mcconville, W., Mcenery, J. E., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Negro, M., Nuss, E., Ohno, M., Ohsugi, T., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Perkins, J. S., Pesce Rollins, M., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Schmid, J., Sgrò, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Stawarz, Ł., Takahashi, H., Thayer, J. B., Thompson, D. J., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., Wood, M., Zimmer, S., Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Ackermann M, Ajello M, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bellazzini R, Bissaldi E, Blandford RD, Bloom ED, Bonino R, Brandt TJ, Bregeon J, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caragiulo M, Caraveo PA, Cavazzuti E, Cecchi C, Charles E, Chekhtman A, Cheung CC, Chiaro G, Ciprini S, Cohen JM, Cohen-Tanugi J, Costanza F, Cutini S, DAmmando F, Davis DS, de Angelis A, de Palma F, Desiante R, Digel SW, Di Lalla N, Di Mauro M, Di Venere L, Favuzzi C, Fegan SJ, Ferrara EC, Focke WB, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Georganopoulos M, Giglietto N, Giordano F, Giroletti M, Godfrey G, Green D, Grenier IA, Guiriec S, Hays E, Hewitt JW, Hill AB, Jogler T, Johnnesson G, Kensei S, Kuss M, Larsson S, Latronico L, Li J, Li L, Longo F, Loparco F, Lubrano P, Magill JD, Maldera S, Manfreda A, Mayer M, Mazziotta MN, McConville W, McEnery JE, Michelson PF, Mitthumsiri W, Mizuno T, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Negro M, Nuss E, Ohno M, Ohsugi T, Orienti M, Orlando E, Ormes JF, Paneque D, Perkins JS, Pesce-Rollins M, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Reimer A, Reimer O, Schmid J, Sgro C, Simone D, Siskind EJ, Spada F, Spandre G, Spinelli P, Stawarz L, Takahashi H, Thayer JB, Thompson DJ, Torres DF, Tosti G, Troja E, Vianello G, Wood KS, Wood M, Zimmer S, ITA, Laboratoire AIM, Université Paris Diderot - Paris 7 ( UPD7 ) -Centre d'Etudes de Saclay, Université Montpellier 2 - Sciences et Techniques ( UM2 ), Laboratoire Leprince-Ringuet ( LLR ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), and Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112))

Subjects
Radio galaxy, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Astrophysics::High Energy Astrophysical Phenomena, galaxies: active, jets [galaxies], galaxies: individual, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxy merger, 01 natural sciences, law.invention, Telescope, galaxies: individual (Fornax A), galaxies: jets, gamma rays: galaxies, radiation mechanisms: non-thermal, Astronomy and Astrophysics, Space and Planetary Science, individual: Fornax A [galaxies], law, 0103 physical sciences, galaxie [gamma rays], Brightest cluster galaxy, Interacting galaxy, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Dwarf galaxy, Physics, 010308 nuclear & particles physics, individual (Fornax A) [galaxies], Astronomy, Quasar, Astronomy and Astrophysic, non-thermal [radiation mechanisms], galaxies: active – galaxies: individual (Fornax A) – galaxies: jets – gamma rays: galaxies – radiation mechanisms: non-thermal, jet [galaxies], active [galaxies], galaxies [gamma rays], ddc:520, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Fermi Gamma-ray Space Telescope
Abstract

The astrophysical journal 826(1), 1 (2016). doi:10.3847/0004-637X/826/1/1, We report the Fermi Large Area Telescope detection of extended γ-ray emission from the lobes of the radio galaxy Fornax A using 6.1 years of Pass 8 data. After Centaurus A, this is now the second example of an extended γ-ray source attributed to a radio galaxy. Both an extended flat disk morphology and a morphology following the extended radio lobes were preferred over a point-source description, and the core contribution was constrained to be $\lt 14$% of the total γ-ray flux. A preferred alignment of the γ-ray elongation with the radio lobes was demonstrated by rotating the radio lobes template. We found no significant evidence for variability on ~0.5 year timescales. Taken together, these results strongly suggest a lobe origin for the γ-rays. With the extended nature of the $\gt 100\;{\rm{MeV}}$ γ-ray emission established, we model the source broadband emission considering currently available total lobe radio and millimeter flux measurements, as well as X-ray detections attributed to inverse Compton (IC) emission off the cosmic microwave background (CMB). Unlike the Centaurus A case, we find that a leptonic model involving IC scattering of CMB and extragalactic background light (EBL) photons underpredicts the γ-ray fluxes by factors of about ~2–3, depending on the EBL model adopted. An additional γ-ray spectral component is thus required, and could be due to hadronic emission arising from proton–proton collisions of cosmic rays with thermal plasma within the radio lobes., Published by Univ.11032, Chicago, Ill. [u.a.]

Published
2016

34. FERMI LAT STACKING ANALYSIS of SWIFT LOCALIZED GRBs

Author

Liang Li, Guido Barbiellini, Stefano Ciprini, M. Orienti, L. Tibaldo, M. N. Mazziotta, Chryssa Kouveliotou, P. N. Bhat, M. Mayer, F. Spada, E. Orlando, N. Gehrels, Olaf Reimer, Luca Baldini, A. Franckowiak, John W. Hewitt, André Schulz, K. S. Wood, Sylvain Guiriec, Claudia Cecchi, M. E. Monzani, T. Ohsugi, Eleonora Troja, C. Favuzzi, Stefan Funk, A. von Kienlin, Hiromitsu Takahashi, F. Gargano, S. Cutini, A. Reimer, Rodrigo Nemmen, Michael David Werner, Carmelo Sgrò, Riccardo Rando, Marco Ajello, D. Horan, G. Godfrey, Ronaldo Bellazzini, E. Nuss, J. B. Thayer, Brandon Anderson, R. Desiante, T. J. Brandt, E. J. Siskind, David Paneque, M. Kuss, P. Fusco, M. Razzano, Filippo D'Ammando, Eric Charles, Eugenio Bottacini, F. Loparco, W. B. Atwood, J. S. Perkins, S. Buson, T. A. Porter, F. de Palma, Francesco Longo, Nicola Giglietto, A. Morselli, Stefan Larsson, Magnus Axelsson, Elisabetta Bissaldi, G. Pivato, Markus Ackermann, M. N. Lovellette, A. De Angelis, P. A. Caraveo, Persis S. Drell, G. Tosti, M. Caragiulo, F. Piron, M. Schaal, Johan Bregeon, Masanori Ohno, M. Tinivella, J. L. Racusin, S. Rainò, Julie McEnery, Tsunefumi Mizuno, Denis Bastieri, Giacomo Vianello, James Chiang, G. Chiaro, Jingcheng Li, Nicola Omodei, J. E. Grove, A. B. Hill, R. Bonino, R. Claus, Dario Gasparrini, A. Chekhtman, P. Lubrano, Melissa Pesce-Rollins, R. A. Cameron, P. Bruel, Daniel Kocevski, W. B. Focke, P. Spinelli, Francesco Giordano, Jan Conrad, Diego F. Torres, R. Buehler, Peter F. Michelson, Marcello Giroletti, Johann Cohen-Tanugi, L. Di Venere, S. Murgia, G. A. Caliandro, I. A. Grenier, Gloria Spandre, Gudlaugur Johannesson, Ackermann M, Ajello M, Anderson B, Atwood WB, Axelsson M, Baldini L, Barbiellini G, Bastieri D, Bellazzini R, Bhat PN, Bissaldi E, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caragiulo M, Caraveo PA, Cecchi C, Charles E, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Claus R, Cohen-Tanugi J, Conrad J, Cutini S, DAmmando F, de Angelis A, de Palma F, Desiante R, Di Venere L, Drell PS, Favuzzi C, Focke WB, Franckowiak A, Funk S, Fusco P, Gargano F, Gasparrini D, Gehrels N, Giglietto N, Giordano F, Giroletti M, Godfrey G, Grenier IA, Grove JE, Guiriec S, Hewitt JW, Hill AB, Horan D, Johannesson G, Kocevski D, Kouveliotou C, Kuss M, Larsson S, Li J, Li L, Longo F, Loparco F, Lovellette MN, Lubrano P, Mayer M, Mazziotta MN, McEnery JE, Michelson PF, Mizuno T, Monzani ME, Morselli A, Murgia S, Nemmen R, Nuss E, Ohno M, Ohsugi T, Omodei N, Orienti M, Orlando E, Paneque D, Perkins JS, Pesce-Rollins M, Piron F, Pivato G, Porter TA, Racusin JL, Raino S, Rando R, Razzano M, Reimer A, Reimer O, Schaal M, Schulz A, Sgro C, Siskind EJ, Spada F, Spandre G, Spinelli P, Takahashi H, Thayer JB, Tibaldo L, Tinivella M, Torres DF, Tosti G, Troja E, Vianello G, von Kienlin A, Werner M, Wood KS, Ackermann, M., Ajello, M., Anderson, B., Atwood, W. B., Axelsson, M., Baldini, L., Barbiellini, G., Bastieri, D., Bellazzini, R., Bhat, P. N., Bissaldi, E., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Cutini, S., D'Ammando, F., De Angelis, A., De Palma, F., Desiante, R., Di Venere, L., Drell, P. S., Favuzzi, C., Focke, W. B., Franckowiak, A., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Giglietto, N., Giordano, F., Giroletti, M., Godfrey, G., Grenier, I. A., Grove, J. E., Guiriec, S., Hewitt, J. W., Hill, A. B., Horan, D., Jóhannesson, G., Kocevski, D., Kouveliotou, C., Kuss, M., Larsson, S., Li, J., Li, L., Longo, F., Loparco, F., Lovellette, M. N., Lubrano, P., Mayer, M., Mazziotta, M. N., Mcenery, J. E., Michelson, P. F., Mizuno, T., Monzani, M. E., Morselli, A., Murgia, S., Nemmen, R., Nuss, E., Ohno, M., Ohsugi, T., Omodei, N., Orienti, M., Orlando, E., Paneque, D., Perkins, J. S., Pesce-Rollins, M., Piron, F., Pivato, G., Porter, T. A., Racusin, J. L., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Schaal, M., Schulz, A., Sgrò, C., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Takahashi, H., Thayer, J. B., Tibaldo, L., Tinivella, M., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Kienlin, A. Von, Werner, M., Wood, K. S., and ITA

Subjects
Swift, Astrophysics::High Energy Astrophysical Phenomena, gamma-ray burst: general, Stacking, Astrophysics, general [gamma-ray burst], 01 natural sciences, law.invention, Telescope, law, 0103 physical sciences, 010306 general physics, X-rays: bursts, 010303 astronomy & astrophysics, computer.programming_language, Physics, gamma rays: general, methods: data analysis, Astronomy and Astrophysics, Space and Planetary Science, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysic, 13. Climate action, data analysi [methods], ddc:520, Astrophysics::Earth and Planetary Astrophysics, burst [X-rays], general [gamma rays], computer, methods: data analysi, Fermi Gamma-ray Space Telescope
Abstract

The astrophysical journal 822(2), 68 (2016). doi:10.3847/0004-637X/822/2/68, We perform a comprehensive stacking analysis of data collected by the Fermi Large Area Telescope (LAT) of γ-ray bursts (GRBs) localized by the Swift spacecraft, which were not detected by the LAT but which fell within the instrument's field of view at the time of trigger. We examine a total of 79 GRBs by comparing the observed counts over a range of time intervals to that expected from designated background orbits, as well as by using a joint likelihood technique to model the expected distribution of stacked counts. We find strong evidence for subthreshold emission at MeV to GeV energies using both techniques. This observed excess is detected during intervals that include and exceed the durations typically characterizing the prompt emission observed at keV energies and lasts at least 2700 s after the co-aligned burst trigger. By utilizing a novel cumulative likelihood analysis, we find that although a burst's prompt γ-ray and afterglow X-ray flux both correlate with the strength of the subthreshold emission, the X-ray afterglow flux measured by Swift's X-ray Telescope at 11 hr post trigger correlates far more significantly. Overall, the extended nature of the subthreshold emission and its connection to the burst's afterglow brightness lend further support to the external forward shock origin of the late-time emission detected by the LAT. These results suggest that the extended high-energy emission observed by the LAT may be a relatively common feature but remains undetected in a majority of bursts owing to instrumental threshold effects., Published by Univ.11032, Chicago, Ill. [u.a.]

Published
2016

35. Resolving the Extragalactic γ-Ray Background above 50 GeV with the Fermi Large Area Telescope

Author

Seb. Funk, Nicola Omodei, Luca Latronico, Soebur Razzaque, G. Godfrey, Elisabetta Bissaldi, G. Pivato, W. B. Atwood, Roger W. Romani, J. S. Perkins, Elizabeth C. Ferrara, F. de Palma, J. D. Magill, E. Hays, André Schulz, Nicola Giglietto, Diego F. Torres, S. J. Fegan, R. J. Britto, G. Jóhannesson, M. Razzano, Filippo D'Ammando, Melissa Pesce-Rollins, Francesco Longo, A. A. Moiseev, Eric Charles, M. N. Lovellette, P. A. Caraveo, Persis S. Drell, D. J. Suson, Luca Baldini, S. Rainò, Tsunefumi Mizuno, A. De Angelis, Jean Ballet, E. J. Siskind, M. Caragiulo, Sylvain Guiriec, Warit Mitthumsiri, Mn Mazziotta, T. A. Porter, G. Chiaro, A. Reimer, Yasushi Fukazawa, F. Loparco, A. Franckowiak, Stefano Ciprini, P. Spinelli, E. Troja, R. Desiante, R. Bonino, M. Di Mauro, Hiromitsu Takahashi, Francesco Giordano, M. Mayer, Markus Ackermann, F. Piron, G. M. Madejski, P. Fusco, Elliott D. Bloom, R. A. Cameron, A. Chekhtman, P. Lubrano, Giacomo Vianello, G. La Mura, P. Bruel, Dario Gasparrini, Carmelo Sgrò, Riccardo Rando, Miguel A. Sánchez-Conde, G. Iafrate, E. Orlando, R. Buehler, D. Simone, E. Nuss, F. Spada, C. Okada, David Paneque, Jingcheng Li, Claudia Cecchi, Seth Digel, Peter F. Michelson, Marcello Giroletti, M. Kuss, Benoit Lott, J. F. Ormes, D. Horan, Johan Bregeon, F. Gargano, T. Reposeur, L. R. Cominsky, Igor V. Moskalenko, Matteo Negro, Olaf Reimer, M. Yassine, A. Morselli, Vahé Petrosian, Keith Bechtol, Marco Ajello, J. B. Thayer, Stefan Larsson, C. Favuzzi, S. Cutini, Andrea Albert, James Chiang, Roger Blandford, Ronaldo Bellazzini, Stephan Zimmer, M. E. Monzani, T. Ohsugi, J. Schmid, Liang Li, Guido Barbiellini, Denis Bastieri, Paolo Giommi, Alberto Manfreda, S. Maldera, F. Costanza, Johann Cohen-Tanugi, L. Tibaldo, L. Di Venere, S. Murgia, G. A. Caliandro, I. A. Grenier, E. Cavazzuti, David H. Green, Gloria Spandre, Aaron Dominguez, T. Jogler, Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), 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, Laboratoire Univers et Particules de Montpellier (LUPM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), 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), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Ackermann, M, Ajello, M., Albert, A., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bregeon, J., Britto, R. J., Bruel, P., Buehler, R., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Cohen Tanugi, J., Cominsky, L. R., Costanza, F., Cutini, S., D'Ammando, F., De Angelis, A., De Palma, F., Desiante, R., Digel, S. W., Di Mauro, M., Di Venere, L., Domínguez, A., Drell, P. S., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Godfrey, G., Green, D., Grenier, I. A., Guiriec, S., Hays, E., Horan, D., Iafrate, G., Jogler, T., Jóhannesson, G., Kuss, M., La Mura, G., Larsson, S., Latronico, L., Li, J., Li, L., Longo, Francesco, Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Magill, J., Maldera, S., Manfreda, A., Mayer, M., Mazziotta, M. N., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Negro, M., Nuss, E., Ohsugi, T., Okada, C., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Perkins, J. S., Pesce Rollins, M., Petrosian, V., Piron, F., Pivato, G., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Romani, R. W., Sánchez Conde, M., Schmid, J., Schulz, A., Sgrò, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Takahashi, H., Thayer, J. B., Tibaldo, L., Torres, D. F., Troja, E., Vianello, G., Yassine, M., Zimmer, S., ITA, Laboratoire Univers et Particules de Montpellier ( LUPM ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Montpellier 2 - Sciences et Techniques ( UM2 ) -Université de Montpellier ( UM ), Laboratoire Leprince-Ringuet ( LLR ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Centre d'Etudes Nucléaires de Bordeaux Gradignan ( CENBG ), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Ackermann M, Ajello M, Albert A, Atwood WB, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bechtol K, Bellazzini R, Bissaldi E, Blandford RD, Bloom ED, Bonino R, Bregeon J, Britto RJ, Bruel P, Buehler R, Caliandro GA, Cameron RA, Caragiulo M, Caraveo PA, Cavazzuti E, Cecchi C, Charles E, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Cohen-Tanugi J, Cominsky LR, Costanza F, Cutini S, DAmmando F, de Angelis A, de Palma F, Desiante R, Digel SW, Di Mauro M, Di Venere L, Dominguez A, Drell PS, Favuzzi C, Fegan SJ, Ferrara EC, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giommi P, Giordano F, Giroletti M, Godfrey G, Green D, Grenier IA, Guiriec S, Hays E, Horan D, Iafrate G, Jogler T, Johannesson G, Kuss M, La Mura G, Larsson S, Latronico L, Li J, Li L, Longo F, Loparco F, Lott B, Lovellette MN, Lubrano P, Madejski GM, Magill J, Maldera S, Manfreda A, Mayer M, Mazziotta MN, Michelson PF, Mitthumsiri W, Mizuno T, Moiseev AA, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Negro M, Nuss E, Ohsugi T, Okada C, Omodei N, Orlando E, Ormes JF, Paneque D, Perkins JS, Pesce-Rollins M, Petrosian V, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Reposeur T, Romani RW, Sanchez-Conde M, Schmid J, Schulz A, Sgro C, Simone D, Siskind EJ, Spada F, Spandre G, Spinelli P, Suson DJ, Takahashi H, Thayer JB, Tibaldo L, Torres DF, Troja E, Vianello G, Yassine M, Zimmer S, Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Cherenkov Telescope Array, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Population, General Physics and Astronomy, Flux, Astrophysics, photon: fluctuation, Euclidean, 01 natural sciences, GLAST, law.invention, Telescope, blazar: energy spectrum, Physics and Astronomy (all), law, Physics and Astronomy, Gamma Ray, Active Galactic Nuclei, 0103 physical sciences, ddc:550, Source counts, extragalactic gamma-ray background, Fermi-LAT, Blazar, education, 010303 astronomy & astrophysics, Monte Carlo, flux: energy dependence, Physics, education.field_of_study, 010308 nuclear & particles physics, background, Astronomy, Galaxy, gamma ray: emission, angular resolution, galaxy, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Fermi Gamma-ray Space Telescope, acceptance
Abstract

Physical review letters 116(15), 151105(2016). doi:10.1103/PhysRevLett.116.151105, The Fermi Large Area Telescope (LAT) Collaboration has recently released a catalog of 360 sources detected above 50 GeV (2FHL). This catalog was obtained using 80 months of data re-processed with Pass 8, the newest event-level analysis, which significantly improves the acceptance and angular resolution of the instrument. Most of the 2FHL sources at high Galactic latitude are blazars. Using detailed Monte Carlo simulations, we measure, for the first time, the source count distribution, dN/dS, of extragalactic γ-ray sources at E>50 GeV and find that it is compatible with a Euclidean distribution down to the lowest measured source flux in the 2FHL (∼8×10$^{−12}$ ph cm$^{−2}$ s$^{−1}$). We employ a one-point photon fluctuation analysis to constrain the behavior of dN/dS below the source detection threshold. Overall, the source count distribution is constrained over three decades in flux and found compatible with a broken power law with a break flux, Sb, in the range [8×10$^{−12}$,1.5×10$^{−11}$] ph cm$^{−2}$ s$^{−1}$ and power-law indices below and above the break of $\alpha_2$∈[1.60,1.75] and $\alpha_1$=2.49±0.12, respectively. Integration of dN/dS shows that point sources account for at least 86$^{+16}_{−14}$% of the total extragalactic γ-ray background. The simple form of the derived source count distribution is consistent with a single population (i.e., blazars) dominating the source counts to the minimum flux explored by this analysis. We estimate the density of sources detectable in blind surveys that will be performed in the coming years by the Cherenkov Telescope Array., Published by APS, College Park, Md.

Published
2016

36. Measurement of the high-energy gamma-ray emission from the Moon with the Fermi Large Area Telescope

Author

J. W. Hewitt, A. Chekhtman, D. Horan, P. Lubrano, A. De Angelis, G. Tosti, Giacomo Vianello, P. Fusco, Carmelo Sgrò, Riccardo Rando, E. Nuss, David Paneque, Tuneyoshi Kamae, Denis Bastieri, Paola Sala, S. Cutini, M. Kuss, Stefano Ciprini, J. D. Magill, M. Razzano, Filippo D'Ammando, S. Maldera, M. Mayer, Ronaldo Bellazzini, Melissa Pesce-Rollins, I. A. Grenier, A. Franckowiak, E. Cavazzuti, Brian L Winer, Gloria Spandre, Francesco Longo, Stefan Funk, Luca Baldini, F. Cerutti, F. Piron, F. Spada, M. Caragiulo, Dario Gasparrini, Xian Hou, Johann Cohen-Tanugi, L. Di Venere, Olaf Reimer, S. Murgia, G. A. Caliandro, F. Loparco, M. Yassine, W. B. Atwood, J. S. Perkins, M. N. Mazziotta, Alice K. Harding, Alessandro Cuoco, Vahé Petrosian, Nicola Giglietto, S. Rainò, Tsunefumi Mizuno, C. Favuzzi, Diego F. Torres, G. Godfrey, G. Chiaro, J. E. Grove, Marco Ajello, J. B. Thayer, F. Costanza, G. Iafrate, Warit Mitthumsiri, J. F. Ormes, R. Bonino, Hiromitsu Takahashi, Nicola Omodei, Andrea Albert, Jingcheng Li, M. N. Lovellette, W. B. Focke, P. Spinelli, P. A. Caraveo, M. E. Monzani, F. de Palma, T. Reposeur, Claudia Cecchi, Persis S. Drell, Seth Digel, Francesco Giordano, S. J. Fegan, James Chiang, L. Tibaldo, K. S. Wood, Roger Blandford, Eleonora Troja, Elisabetta Bissaldi, G. Pivato, R. Buehler, F. Gargano, S. Guiriec, R. A. Cameron, Peter F. Michelson, P. Bruel, Marcello Giroletti, R. Claus, E. J. Siskind, A. Reimer, D. J. Thompson, Gudlaugur Johannesson, R. Desiante, T. Glanzman, Markus Ackermann, Liang Li, Guido Barbiellini, Luca Latronico, A. Morselli, Stefan Larsson, Eugenio Bottacini, Alberto Manfreda, Arnaud Ferrari, Johan Bregeon, E. Orlando, Université Montpellier 2 - Sciences et Techniques (UM2), 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), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Ackermann M, Ajello M, Albert A, Atwood WB, Baldini L, Barbiellini G, Bastieri D, Bellazzini R, Bissaldi E, Blandford RD, Bonino R, Bottacini E, Bregeon J, Bruel P, Buehler R, Caliandro GA, Cameron RA, Caragiulo M, Caraveo PA, Cavazzuti E, Cecchi C, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Claus R, Cohen-Tanugi J, Costanza F, Cuoco A, Cutini S, DAmmando F, de Angelis A, de Palma F, Desiante R, Digel SW, Di Venere L, Drell PS, Favuzzi C, Fegan SJ, Focke WB, Franckowiak A, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Glanzman T, Godfrey G, Grenier IA, Grove JE, Guiriec S, Harding AK, Hewitt JW, Horan D, Hou X, Iafrate G, Johannesson G, Kamae T, Kuss M, Larsson S, Latronico L, Li J, Li L, Longo F, Loparco F, Lovellette MN, Lubrano P, Magill J, Maldera S, Manfreda A, Mayer M, Mazziotta MN, Michelson PF, Mitthumsiri W, Mizuno T, Monzani ME, Morselli A, Murgia S, Nuss E, Omodei N, Orlando E, Ormes JF, Paneque D, Perkins JS, Pesce-Rollins M, Petrosian V, Piron F, Pivato G, Raino S, Rando R, Razzano M, Reimer A, Reimer O, Reposeur T, Sgro C, Siskind EJ, Spada F, Spandre G, Spinelli P, Takahashi H, Thayer JB, Thompson DJ, Tibaldo L, Torres DF, Tosti G, Troja E, Vianello G, Winer BL, Wood KS, Yassine M, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Ackermann, M., Ajello, M., Albert, A., Atwood, W. B., Baldini, L., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bonino, R., Bottacini, E., Bregeon, J., Bruel, P., Buehler, R., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cavazzuti, E., Cecchi, C., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., Cohen Tanugi, J., Costanza, F., Cuoco, A., Cutini, S., D'Ammando, F., De Angelis, A., De Palma, F., Desiante, R., Digel, S. W., Di Venere, L., Drell, P. S., Favuzzi, C., Fegan, S. J., Focke, W. B., Franckowiak, A., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guiriec, S., Harding, A. K., Hewitt, J. W., Horan, D., Hou, X., Iafrate, G., Jóhannesson, G., Kamae, T., Kuss, M., Larsson, S., Latronico, L., Li, J., Li, L., Longo, Francesco, Loparco, F., Lovellette, M. N., Lubrano, P., Magill, J., Maldera, S., Manfreda, A., Mayer, M., Mazziotta, M. N., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Murgia, S., Nuss, E., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Perkins, J. S., Pesce Rollins, M., Petrosian, V., Piron, F., Pivato, G., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Sgrò, C., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Takahashi, H., Thayer, J. B., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Winer, B. L., Wood, K. S., Yassine, M., Cerutti, F., Ferrari, A., Sala, P. R., Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 2 - Sciences et Techniques ( UM2 ), Laboratoire Leprince-Ringuet ( LLR ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire AIM, Université Paris Diderot - Paris 7 ( UPD7 ) -Centre d'Etudes de Saclay, Centre d'Etudes Nucléaires de Bordeaux Gradignan ( CENBG ), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and ITA

Subjects
Physics and Astronomy (miscellaneous), Proton, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], emission: spectrum, Astrophysics, cosmic radiation: interaction, 7. Clean energy, 01 natural sciences, Spectral line, High Energy Physics - Experiment, law.invention, High Energy Physics - Experiment (hep-ex), helium: nucleus, law, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Emission spectrum, Moon, 010303 astronomy & astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Gamma Ray, Gamma ray, Gamma-ray astronomy, Cosmic Rays, solar, gamma ray: emission, high-energy gamma-ray emission, Moon, Fermi Large Area Telescope, Physics::Space Physics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics and Astronomy, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, satellite, FOS: Physical sciences, Cosmic ray, helium: spectrum, Cosmic Ray, gamma ray: energy spectrum, Article, GLAST, Telescope, surface: lunar, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], 0103 physical sciences, ddc:530, 010308 nuclear & particles physics, flux, 13. Climate action, correlation, p: cosmic radiation, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Fermi Gamma-ray Space Telescope
Abstract

We have measured the gamma-ray emission spectrum of the Moon using the data collected by the Large Area Telescope onboard the Fermi satellite during its first 7 years of operation, in the energy range from 30 MeV up to a few GeV. We have also studied the time evolution of the flux, finding a correlation with the solar activity. We have developed a full Monte Carlo simulation describing the interactions of cosmic rays with the lunar surface. The results of the present analysis can be explained in the framework of this model, where the production of gamma rays is due to the interactions of cosmic-ray proton and helium nuclei with the surface of the Moon. Finally, we have used our simulation to derive the cosmic-ray proton and helium spectra near Earth from the Moon gamma-ray data., Comment: Published by PRD, 16 pages, 11 figures, corresponding authors: F. Loparco and M. N. Mazziotta

Published
2016

37. FERMI-LAT OBSERVATIONS of the LIGO EVENT GW150914

Author

Denis Bastieri, G. A. Gomez-Vargas, Andrea Albert, J. L. Racusin, M. N. Mazziotta, Roger W. Romani, S. Maldera, James Chiang, Roger Blandford, Eric Charles, Gabrijela Zaharijas, Steven Ritz, R. J. Britto, D. J. Suson, P. M. Saz Parkinson, M. Marelli, Stephan Zimmer, Gudlaugur Johannesson, M. Caragiulo, M. Giomi, T. H. Burnett, T. J. Brandt, M. E. Monzani, Lucas Guillemot, David A. Smith, T. Ohsugi, Eleonora Troja, Liang Li, R. Bonino, Guido Barbiellini, A. Reimer, J. Becerra González, Nestor Mirabal, Dario Gasparrini, Elisabetta Bissaldi, G. Pivato, S. Kensei, Matteo Negro, N. Di Lalla, Luca Baldini, L. S. Rochester, A. Morselli, T. Glanzman, Seth Digel, P. Fusco, Eugenio Bottacini, Alberto Manfreda, A. Chekhtman, P. Lubrano, T. Reposeur, Matthew G. Baring, Sara Buson, Sylvain Guiriec, R. A. Cameron, Jean Ballet, E. Hays, A. Franckowiak, G. Godfrey, Brandon Anderson, J. G. Thayer, Stefano Ciprini, S. Cutini, A. A. Moiseev, Stefan Funk, T. A. Porter, D. Dumora, S. Rainò, J. D. Magill, Daniel Kocevski, Paolo Giommi, F. de Palma, Tsunefumi Mizuno, Marianne Lemoine-Goumard, M. Mayer, Elliott D. Bloom, G. Chiaro, F. Loparco, M. Orienti, F. Piron, G. M. Madejski, J. E. Grove, Yasushi Fukazawa, Marco Ajello, R. Dubois, J. B. Thayer, J. W. Hewitt, Manuel Meyer, Jonathan Granot, J. F. Ormes, Alice K. Harding, D. Horan, E. Orlando, E. Moretti, F. Costanza, T. Kamae, P. Spinelli, Melissa Pesce-Rollins, B. Condon, R. Desiante, Daniela Hadasch, Soebur Razzaque, Makoto Arimoto, Jingcheng Li, I. A. Grenier, K. S. Wood, L. Tibaldo, Francesco Giordano, Johan Bregeon, Nicola Omodei, Carmelo Sgrò, Riccardo Rando, A. B. Hill, E. Cavazzuti, Matthew Wood, Julie McEnery, D. Simone, E. Nuss, David Paneque, S. J. Fegan, M. Kuss, J. M. Casandjian, L. R. Cominsky, P. Bruel, Igor V. Moskalenko, Olaf Reimer, N. Gehrels, D. J. Thompson, C. Favuzzi, Tonia M. Venters, Giacomo Vianello, G. La Mura, Ronaldo Bellazzini, F. Gargano, Luca Latronico, Elizabeth C. Ferrara, E. J. Siskind, Magnus Axelsson, Markus Ackermann, Diego F. Torres, R. Buehler, Peter F. Michelson, Marcello Giroletti, F. Spada, R. Caputo, Hiroyasu Tajima, Stefan Larsson, Filippo D'Ammando, Alessandro Cuoco, W. B. Atwood, J. S. Perkins, Nicola Giglietto, M. N. Lovellette, P. A. Caraveo, Persis S. Drell, Francesco Longo, T. Jogler, Sylvia J. Zhu, Aaron Dominguez, Yasunobu Uchiyama, M. Di Mauro, David H. Green, Gloria Spandre, Johann Cohen-Tanugi, L. Di Venere, M.-H. Grondin, S. Murgia, G. A. Caliandro, Stanford University [Stanford], Groupe de Recherche en Physique des Hautes Energies (GRPHE), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut Universitaire de Technologie de Colmar, Los Alamos National Laboratory (LANL), Santa Cruz Institute for Particle Physics (SCIPP), University of California [Santa Cruz] (UCSC), University of California-University of California, Groupe de Recherche en Economie Théorique et Appliquée (GREThA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Stanford Linear Accelerator Center (SLAC), UGC-DAE Consortium for Scientific Research, AUTRES, Department of Clinical and Molecular Medicine, Institut Pasteur, Fondation Cenci Bolognetti - Istituto Pasteur Italia, Fondazione Cenci Bolognetti, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Università degli Studi di Roma 'La Sapienza' [Rome], IHU-LIRYC, CHU Bordeaux [Bordeaux]-Université Bordeaux Segalen - Bordeaux 2, GLAST, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Ricerca Metrologica, Torino, London School of Hygiene and Tropical Medicine (LSHTM), Istituto Nazionale di Fisica Nucleare, sezione di Bari (INFN, sezione di Bari), National Institute for Nuclear Physics (INFN), Istituto Nazionale di Astrofisica (INAF), École nationale supérieure d'architecture de Nantes (ENSA Nantes), Unité Scientifique de la Station de Nançay (USN), Université d'Orléans (UO)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), GFSC Astrophysics Science Division, NASA Goddard Space Flight Center (GSFC), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, DIEE, University of Cagliari, University of Gothenburg (GU), China Agricultural University (CAU), Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris)-École normale supérieure - Paris (ENS Paris), Laboratoire Univers et Particules de Montpellier (LUPM), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Hansen Experimental Physics Laboratory (HEPL), Institut Pasteur de Montevideo, Réseau International des Instituts Pasteur (RIIP), University of Botswana, Department of Animal and Avian Sciences, University of Maryland [College Park], University of Maryland System-University of Maryland System, Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Medical Sciences Division, Northern Ontario School of Medicine, Centre de Recherche Interdisciplinaire sur la Biologie, la Santé la Société, et l’Environnement, Université du Québec à Montréal (UQAM), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Institute of Infection, Immunity and Inflammation, University of Glasgow, École nationale supérieure d'architecture de Versailles (ENSA-V), Department of Plant Sciences [Davis, CA], University of California [Davis] (UC Davis), Sea Mammal Research Unit, University of St Andrews [Scotland], Department of Physics [Tokyo], Rikkyo University [Tokyo], Naval Research Laboratory (NRL), Zhejiang University, Laboratoire de Conception Fabrication Commande (LCFC), Université de Lorraine (UL)-École Nationale Supérieure d'Arts et Métiers (ENSAM), Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Stanford University, Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-IUT de Colmar, Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA)), University of California [Santa Cruz] (UC Santa Cruz), University of California (UC)-University of California (UC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), SLAC National Accelerator Laboratory (SLAC), Department of Molecular Medicine, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Université Bordeaux Segalen - Bordeaux 2-CHU Bordeaux [Bordeaux], Istituto Nazionale di Fisica Nucleare (INFN), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), GSFC Astrophysics Science Division, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Hansen Experimental Physics Lab [Stanford] (HEPL), Université du Québec à Montréal = University of Québec in Montréal (UQAM), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Department of Plant Sciences [Univ California Davis] (Plant - UC Davis), Université de Lorraine (UL)-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), ITA, Institut Universitaire de Technologie de Colmar-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA)), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National d’Études Spatiales [Paris] (CNES), Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Ackermann, M., Ajello, M., Albert, A., Anderson, B., Arimoto, M., Atwood, W. B., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Baring, M. G., Bastieri, D., Gonzalez, J. Becerra, Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Britto, R. J., Bruel, P., Buehler, R., Burnett, T. H., Buson, S., Caliandro, G. A., Cameron, R. A., Caputo, R., Caragiulo, M., Caraveo, P. A., Casandjian, J. M., Cavazzuti, E., Charles, E., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Cohen Tanugi, J., Cominsky, L. R., Condon, B., Costanza, F., Cuoco, A., Cutini, S., D'Ammando, F., Palma, F. De, Desiante, R., Digel, S. W., Lalla, N. Di, Mauro, M. Di, Venere, L. Di, Domnguez, A., Drell, P. S., Dubois, R., Dumora, D., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Giglietto, N., Giomi, M., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Gomez Vargas, G. A., Granot, J., Green, D., Grenier, I. A., Grondin, M. H., Grove, J. E., Guillemot, L., Guiriec, S., Hadasch, D., Harding, A. K., Hays, E., Hewitt, J. W., Hill, A. B., Horan, D., Jogler, T., Jóhannesson, G., Kamae, T., Kensei, S., Kocevski, D., Kuss, M., Mura, G. La, Larsson, S., Latronico, L., Lemoine Goumard, M., Li, J., Li, L., Longo, Francesco, Loparco, F., Lovellette, M. N., Lubrano, P., Madejski, G. M., Magill, J., Maldera, S., Manfreda, A., Marelli, M., Mayer, M., Mazziotta, M. N., Mcenery, J. E., Meyer, M., Michelson, P. F., Mirabal, N., Mizuno, T., Moiseev, A. A., Monzani, M. E., Moretti, E., Morselli, A., Moskalenko, I. V., Murgia, S., Negro, M., Nuss, E., Ohsugi, T., Omodei, N., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Perkins, J. S., Pesce Rollins, M., Piron, F., Pivato, G., Porter, T. A., Racusin, J. L., Rain, S., Rando, R., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rochester, L. S., Romani, R. W., Parkinson, P. M. Saz, Sgr, C., Simone, D., Siskind, E. J., Smith, D. A., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Tajima, H., Thayer, J. G., Thayer, J. B., Thompson, D. J., Tibaldo, L., Torres, D. F., Troja, E., Uchiyama, Y., Venters, T. M., Vianello, G., Wood, K. S., Wood, M., Zaharijas, G., Zhu, S., Zimmer, S., Ackermann M, Ajello M, Albert A, Anderson B, Arimoto M, Atwood WB, Axelsson M, Baldini L, Ballet J, Barbiellini G, Baring MG, Bastieri D, Gonzalez JB, Bellazzini R, Bissaldi E, Blandford RD, Bloom ED, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Britto RJ, Bruel P, Buehler R, Burnett TH, Buson S, Caliandro GA, Cameron RA, Caputo R, Caragiulo M, Caraveo PA, Casandjian JM, Cavazzuti E, Charles E, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Cohen-Tanugi J, Cominsky LR, Condon B, Costanza F, Cuoco A, Cutini S, DAmmando F, de Palma F, Desiante R, Digel SW, Di Lalla N, Di Mauro M, Di Venere L, Dominguez A, Drell PS, Dubois R, Dumora D, Favuzzi C, Fegan SJ, Ferrara EC, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Gehrels N, Giglietto N, Giomi M, Giommi P, Giordano F, Giroletti M, Glanzman T, Godfrey G, Gomez-Vargas GA, Granot J, Green D, Grenier IA, Grondin MH, Grove JE, Guillemot L, Guiriec S, Hadasch D, Harding AK, Hays E, Hewitt JW, Hill AB, Horan D, Jogler T, Johannesson G, Kamae T, Kensei S, Kocevski D, Kuss M, La Mura G, Larsson S, Latronico L, Lemoine-Goumard M, Li J, Li L, Longo F, Loparco F, Lovellette MN, Lubrano P, Madejski GM, Magill J, Maldera S, Manfreda A, Marelli M, Mayer M, Mazziotta MN, McEnery JE, Meyer M, Michelson PF, Mirabal N, Mizuno T, Moiseev AA, Monzani ME, Moretti E, Morselli A, Moskalenko IV, Murgia S, Negro M, Nuss E, Ohsugi T, Omodei N, Orienti M, Orlando E, Ormes JF, Paneque D, Perkins JS, Pesce-Rollins M, Piron F, Pivato G, Porter TA, Racusin JL, Raino S, Rando R, Razzaque S, Reimer A, Reimer O, Reposeur T, Ritz S, Rochester LS, Romani RW, Parkinson PMS, Sgro C, Simone D, Siskind EJ, Smith DA, Spada F, Spandre G, Spinelli P, Suson DJ, Tajima H, Thayer JG, Thayer JB, Thompson DJ, Tibaldo L, Torres DF, Troja E, Uchiyama Y, Venters TM, Vianello G, Wood KS, Wood M, Zaharijas G, Zhu S, Zimmer S, Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome]-Institut Pasteur, Fondation Cenci Bolognetti - Istituto Pasteur Italia, Fondazione Cenci Bolognetti, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Università degli Studi di Roma 'La Sapienza' [Rome]-Réseau International des Instituts Pasteur (RIIP)-Institut Pasteur, Fondation Cenci Bolognetti - Istituto Pasteur Italia, Fondazione Cenci Bolognetti, and École normale supérieure - Paris (ENS Paris)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)

Subjects
gamma-ray burst: general, gamma-rays: general, gravitational waves, methods: observational, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, gamma-ray burst: general, observational [methods], FOS: Physical sciences, Astrophysics, general [gamma-ray burst], 01 natural sciences, law.invention, Telescope, ravitational waves, law, Observatory, gamma-ray burst: general – gamma-rays: general – gravitational waves – methods: observational, 0103 physical sciences, gravitational wave, 010303 astronomy & astrophysics, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, Gravitational wave, gamma-rays: general, gravitational waves, methods: observational, Astronomy and Astrophysics, Space and Planetary Science, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, gamma rays: general, Astronomy and Astrophysic, Gamma-ray burst: general, LIGO, Black hole, Interferometry, Sky, [SDU]Sciences of the Universe [physics], ddc:520, Astrophysics - High Energy Astrophysical Phenomena, general [gamma-rays], Fermi Gamma-ray Space Telescope
Abstract

The astrophysical journal / 2 823(1), L2(2016). doi:10.3847/2041-8205/823/1/L2, The Fermi Large Area Telescope (LAT) has an instantaneous field of view (FoV) covering $\sim 1/5$ of the sky and it completes a survey of the entire sky in high-energy gamma-rays every 3 hr. It enables searches for transient phenomena over timescales from milliseconds to years. Among these phenomena could be electromagnetic counterparts to gravitational wave (GW) sources. In this paper, we present a detailed study of the LAT observations relevant to Laser Interferometer Gravitational-wave Observatory (LIGO) event GW150914, which is the first direct detection of gravitational waves and has been interpreted as being due to the coalescence of two stellar-mass black holes. The localization region for GW150914 was outside the LAT FoV at the time of the GW signal. However, as part of routine survey observations, the LAT observed the entire LIGO localization region within ~70 minutes of the trigger and thus enabled a comprehensive search for a γ-ray counterpart to GW150914. The study of the LAT data presented here did not find any potential counterparts to GW150914, but it did provide limits on the presence of a transient counterpart above 100 MeV on timescales of hours to days over the entire GW150914 localization region., Published by Institute of Physics Publ., London

Published
2016

38. Experimental investigation and CFD numerical simulation of WGSR for hydrogen enrichment of high CO2 content syngas from an air-blown updraft coal gasifier

Author

Giorgio Cau, G Mura, and S. Murgia

Subjects
Wood gas generator, Chemistry, General Chemical Engineering, Organic Chemistry, Energy Engineering and Power Technology, Water-gas shift reaction, Fuel Technology, Chemical engineering, Fuel gas, Integrated gasification combined cycle, Carbon capture and storage, Coal gasification, Syngas, Hydrogen production
Abstract

The water gas shift reaction (WGSR) is an attractive process for enhancing the conversion of syngas carbon monoxide contents into carbon dioxide and hydrogen by means of steam in medium- and small-scale coal gasification power plants integrated with Carbon Capture and Storage (CCS) technologies. Fixed bed gasifiers, in fact, may become an interesting solution for medium- and small-scale applications in distributed power generation, although a syngas with a low LHV (about 6–7 MJ/kg), high N 2 (40–45%) and low H 2 content, is generated when air is used, as usual, as oxidant. Syngas LHV can be enhanced by using oxygen (or oxygen enriched air) instead of air. However, when oxygen is used an appropriate amount of diluent agent as additional steam, recirculated syngas or CO 2 is fed into the gasifier to control gasification temperature. In the case of syngas recirculation, the gasification process produces a syngas characterized by a high CO 2 content, suitable for a more efficient separation. This paper concerns the experimental investigation and numerical simulation of carbon monoxide conversion and hydrogen generation from WGSR, when high CO 2 content operating mixtures are considered. A baseline mixture was assumed that simulates the fuel gas produced by coal gasification in a small-scale air-blown updraft gasifier. During the experiments the fraction of N 2 in the baseline mixture was gradually replaced with increasing CO 2 fraction in order to investigate its effects of CO 2 concentration on reaction and catalysts performances. An experimental apparatus, designed and built at the Department of Mechanical Engineering of the University of Cagliari (DIMECA), was used to investigate the main performance of WGSR, using high CO 2 -content operating mixtures and different catalyst types (Fe/Cr or Pt/Al for high temperature and Cu/Zn or Pt/Al for low temperature), and varying fundamental parameters, such as residence time of reactants in the catalyst bed, reaction temperature and H 2 O/CO ratio. The experimental results are supported by an in-depth numerical analysis. Numerical simulations were carried out using zero-dimensional (CSTR-based equilibrium model), one-dimensional (PFR-based) and CFD two-dimensional computational models to characterize the spatial and time-dependent behavior of the process.

Published
2012

39. Comprehensive CFD model of an air-blown coal-fired updraft gasifier

Author

Giorgio Cau, S. Murgia, and M. Vascellari

Subjects
Wood gas generator, business.industry, General Chemical Engineering, Organic Chemistry, Multiphase flow, Energy balance, Energy Engineering and Power Technology, Computational fluid dynamics, Fuel Technology, Scientific method, Environmental science, Coal, Extraction (military), Char, Process engineering, business
Abstract

A comprehensive CFD model has been developed to simulate the gasification process within an air-blown updraft coal gasifier. Updraft fixed bed gasification processes are characterized by complex behavior, since they involve different space- and time-dependent sub-processes where coal preheating, drying, de-volatilization and char reactions take place. Simplified models, such as non-dimensional ones, useful for preliminary gross mass and energy balance, are unable to correctly simulate the overall gasification phenomena and more sophisticated approaches are required. In particular, CFD models could be used to describe in a detailed way the complex time- and space-dependent phenomena involved in the gasification process. Considering the high volume fraction of the solid phase, close to the packing condition, the Euler–Euler approach is required to model this multiphase flow. The solid phase is considered as a continua according to the kinetic and plastic theory of granular flows. The operation of a Wellman–Galusha gasifier is investigated, considering a non-continuous loading of coal and extraction of the ash, with the aim of characterizing the space- and time-dependent behavior of the process.

Published
2012

40. Erratum: 'Search for Gamma-Ray Emission from the Coma Cluster with Six Years of Fermi-LAT Data' (2016, ApJ, 819, 149)

Author

Luca Latronico, I. A. Grenier, E. Cavazzuti, David H. Green, Igor V. Moskalenko, Hiroyasu Tajima, Johann Cohen-Tanugi, Francesco Longo, L. Di Venere, S. Murgia, G. A. Caliandro, Gloria Spandre, Jan Conrad, Olaf Reimer, Liang Li, Guido Barbiellini, T. Ohsugi, Johan Bregeon, S. Rainò, Tsunefumi Mizuno, Ronaldo Bellazzini, M. Orienti, G. Chiaro, S. Cutini, C. Favuzzi, Diego F. Torres, Yasushi Fukazawa, G. Jóhannesson, Eric Charles, A. De Angelis, G. Tosti, E. J. Siskind, S. Maldera, Carmelo Sgrò, Riccardo Rando, P. Fusco, Giacomo Vianello, S. J. Fegan, G. Godfrey, Jean Ballet, W. B. Atwood, M. Caragiulo, E. Nuss, F. Loparco, J. W. Hewitt, D. Horan, L. Tibaldo, Markus Ackermann, Nicola Giglietto, David Paneque, M. Kuss, Vahé Petrosian, Stefano Ciprini, E. Troja, M. Mayer, Elliott D. Bloom, R. Buehler, M. N. Lovellette, F. de Palma, P. A. Caraveo, Seb. Funk, R. Bonino, Persis S. Drell, Peter F. Michelson, Marcello Giroletti, Marco Ajello, J. B. Thayer, F. Piron, G. M. Madejski, Hiromitsu Takahashi, Andrea Albert, F. Gargano, E. Orlando, P. Lubrano, Jingcheng Li, J. F. Ormes, Roger Blandford, A. Reimer, J. M. Casandjian, K. S. Wood, Stephan Zimmer, Luca Baldini, M. E. Monzani, Sylvain Guiriec, Mn Mazziotta, Yoel Rephaeli, Melissa Pesce-Rollins, T. A. Porter, Denis Bastieri, Seth Digel, Elisabetta Bissaldi, G. Pivato, E. Hays, Eugenio Bottacini, Alberto Manfreda, Dario Gasparrini, Miguel A. Sánchez-Conde, F. Spada, Stefan Larsson, M. Razzano, Filippo D'Ammando, Keith Bechtol, A. Chekhtman, Warit Mitthumsiri, P. Spinelli, Francesco Giordano, R. A. Cameron, P. Bruel, R. Desiante, A. Morselli, Claudia Cecchi, ITA, USA, FRA, and DEU

Subjects
Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Gamma ray, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Space and Planetary Science, 0103 physical sciences, Coma Cluster, ddc:520, 010306 general physics, Fermi Gamma-ray Space Telescope
Abstract

We present results from $\gamma$-ray observations of the Coma cluster incorporating six years of Fermi-LAT data and the newly released "Pass 8" event-level analysis. Our analysis of the region reveals low-significance residual structures within the virial radius of the cluster that are too faint for a detailed investigation with the current data. Using a likelihood approach that is free of assumptions on the spectral shape we derive upper limits on the $\gamma$-ray flux that is expected from energetic particle interactions in the cluster. We also consider a benchmark spatial and spectral template motivated by models in which the observed radio halo is mostly emission by secondary electrons. In this case, the median expected and observed upper limits for the flux above 100 $\mathrm{MeV}$ are 1.7 × $10^{−9} ph$ $cm^{−2} s^{−1}$ and 5.2 × $10^{−9} ph$ $cm^{−2} s^{−1}$ respectively (the latter corresponds to residual emission at the level of 1.8$\sigma$). These bounds are comparable to or higher than predicted levels of hadronic gamma-ray emission in cosmic-ray (CR) models with or without reacceleration of secondary electrons, although direct comparisons are sensitive to assumptions regarding the origin and propagation mode of CRs and magnetic field properties. The minimal expected $\gamma$-ray flux from radio and star-forming galaxies within the Coma cluster is roughly an order of magnitude below the median sensitivity of our analysis.

Published
2018

41. Fermi Large Area Telescope Observations of PSR J1836+5925

Author

C. Meurer, R. E. Hughes, E. Hays, S. Murgia, M. T. Wolff, F. Piron, G. M. Madejski, D. J. Thompson, Alice K. Harding, Jean Ballet, Hartmut Sadrozinski, Brian L Winer, K. Watters, Gudlaugur Johannesson, Omer Celik, M. Pierbattista, A. Tramacere, T. L. Usher, T. H. Burnett, Jürgen Knödlseder, A. A. Moiseev, Stefano Ciprini, Takaaki Tanaka, E. J. Siskind, Felix Ryde, Johann Cohen-Tanugi, Y. Edmonds, Nanda Rea, A. Y. Rodriguez, Matthew G. Baring, M. Ziegler, Guido Barbiellini, S. Germani, Stephen Fegan, Scott M. Ransom, R. Claus, W. N. Johnson, Paul S. Ray, M. S. Strickman, M. Frailis, L. S. Rochester, Elliott D. Bloom, P. D. Smith, T. Ylinen, D. Hadasch, Stefan Funk, D. Parent, C. C. Cheung, J. H. Panetta, M. Brigida, James Chiang, M.-H. Grondin, A. Reimer, Hiromitsu Takahashi, A. Chekhtman, F. Loparco, N. Vilchez, Dario Gasparrini, D. Horan, Roger Blandford, Markus Ackermann, R. Dubois, Ronaldo Bellazzini, A. Makeev, M. N. Mazziotta, W. B. Focke, W. B. Atwood, Gianluca Giavitto, W. Mitthumsiri, Julie McEnery, Neil Gehrels, Roger W. Romani, T. Reposeur, G. A. Caliandro, J. P. Norris, A. W. Borgland, A. A. Abdo, E. Orlando, L. Guillemot, Nicola Giglietto, P. Spinelli, M. E. Monzani, M. Razzano, M. Roth, A. De Luca, A. Morselli, Fernando Camilo, V. Vitale, Francesco Giordano, M. N. Lovellette, Tyrel J. Johnson, P. A. Caraveo, Nicola Omodei, Denis Bastieri, J. M. Casandjian, T. Kamae, Stephen E. Thorsett, Alessandro Brez, Persis S. Drell, R. A. Cameron, E. Do Couto E Silva, A. Van Etten, Igor V. Moskalenko, P. Fortin, P. Lubrano, P. L. Nolan, J. Lande, Sylvain Guiriec, J. Bregeon, Carmelo Sgrò, Riccardo Rando, Olaf Reimer, V. Vasileiou, K. S. Wood, Marianne Lemoine-Goumard, Seth Digel, F. Gargano, S. Carrigan, Luca Latronico, Luca Baldini, Martino Marelli, I. A. Grenier, E. Nuss, P. M. Saz Parkinson, J. G. Thayer, David Paneque, T. Ohsugi, Miranda Jackson, M. Kuss, C. Favuzzi, Jonathan F. Ormes, C. Monte, T. A. Porter, O. Tibolla, Gloria Spandre, Y. Kanai, V. Pelassa, D. Dumora, Jun Kataoka, Marco Ajello, J. B. Thayer, Keith Bechtol, L. Tibaldo, A. P. Waite, Eric Charles, Christo Venter, P. Wang, S. Buson, D. J. Suson, A. De Angelis, A. S. Johnson, Diego F. Torres, C. Gwon, Jeffrey D. Scargle, G. Tosti, Christian Farnier, M. Dormody, Emanuele Bonamente, N. Kawai, M. Pepe, Melissa Pesce-Rollins, P. Fusco, B. Berenji, Hideaki Katagiri, Andrea Belfiore, Matthew Kerr, Claudia Cecchi, Jan Conrad, Pascal Bruel, Peter F. Michelson, S. Rainò, Tsunefumi Mizuno, R. P. Johnson, J. E. Grove, Yasushi Fukazawa, Francesco Longo, A. Sander, David Stanley Smith, G. Godfrey, F. de Palma, T. Glanzman, Benoit Lott, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), 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), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Fermi-LAT, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Abdo, A. A., Ackermann, M., Ajello, M., Atwood, B., Baldini, L., Ballet, J., Barbiellini, G., Baring, M. G., Bastieri, D., Bechtol, K., Belfiore, A., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Buson, S., Caliandro, G. A., Cameron, R. A., Camilo, F., Caraveo, P. A., Carrigan, S., Casandjian, J. M., Cecchi, C., Celik, O., Charles, E., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen Tanugi, J., Conrad, J., Angelis, A. d., Luca, A. d., Palma, F. d., Digel, S. W., Dormody, M., Silva, E. D. E., Drell, P. S., Dubois, R., Dumora, D., Edmonds, Y., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Fortin, P., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giavitto, G., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I. A., Grondin, M. H., Grove, J. E., Guillemot, L., Guiriec, S., Gwon, C., Hadasch, D., Harding, A. K., Hays, E., Horan, D., Hughes, R. E., Jackson, M. S., Johannesson, G., Johnson, A. S., Johnson, R. P., Johnson, T. J., Johnson, W. N., Kamae, T., Kanai, Y., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knodlseder, J., Kuss, M., Lande, J., Latronico, L., Lemoine Goumard, M., Longo, Francesco, Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Marelli, M., Mazziotta, M. N., Mcenery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Panetta, J. H., Parent, D., Pelassa, V., Pepe, M., Pesce Rollins, M., Pierbattista, M., Piron, F., Porter, T. A., Raino, S., Rando, R., Ransom, S. M., Ray, P. S., Razzano, M., Rea, N., Reimer, A., Reimer, O., Reposeur, T., Rochester, L. S., Rodriguez, A. Y., Romani, R. W., Roth, M., Ryde, F., Sadrozinski, H. F. W., Sander, A., Parkinson, P. M. S., Scargle, J. D., Sgro, C., Siskind, E. J., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Takahashi, H., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Thorsett, S. E., Tibaldo, L., Tibolla, O., Torres, D. F., Tosti, G., Tramacere, A., Usher, T. L., Etten, A. V., Vasileiou, V., Venter, C., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Watters, K., Winer, B. L., Wolff, M. T., Wood, K. S., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), and 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)

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Population, Pulsar planet, FOS: Physical sciences, Fermi satellite, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Pulsar wind nebula, High Energy Gamma-ray Astronomy, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Pulsar, Millisecond pulsar, pulsars: general, 0103 physical sciences, Gamma rays: general, Pulsars: general, pulsars: individual (PSR J1836+5925), 010306 general physics, education, 010303 astronomy & astrophysics, Pulsars, Astrophysics::Galaxy Astrophysics, gamma rays: general, pulsars: individual: PSR J1836+5925, Physics, education.field_of_study, Astronomy, Astronomy and Astrophysics, Galactic plane, Astrophysics - Astrophysics of Galaxies, Neutron star, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), Fermi Gamma-ray Space Telescope
Abstract

The discovery of the gamma-ray pulsar PSR J1836+5925, powering the formerly unidentified EGRET source 3EG J1835+5918, was one of the early accomplishments of the Fermi Large Area Telescope (LAT). Sitting 25 degrees off the Galactic plane, PSR J1836+5925 is a 173 ms pulsar with a characteristic age of 1.8 million years, a spindown luminosity of 1.1$\times10^{34}$ erg s$^{-1}$, and a large off-peak emission component, making it quite unusual among the known gamma-ray pulsar population. We present an analysis of one year of LAT data, including an updated timing solution, detailed spectral results and a long-term light curve showing no indication of variability. No evidence for a surrounding pulsar wind nebula is seen and the spectral characteristics of the off-peak emission indicate it is likely magnetospheric. Analysis of recent XMM observations of the X-ray counterpart yields a detailed characterization of its spectrum, which, like Geminga, is consistent with that of a neutron star showing evidence for both magnetospheric and thermal emission., Accepted to Astrophysical Journal

Published
2010

42. Observation of Supernova Remnant IC 443 with the Fermi Large Area Telescope

Author

A. A. Abdo, M. Ackermann, M. Ajello, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, B. M. Baughman, K. Bechtol, R. Bellazzini, B. Berenji, R. D. Blandford, E. D. Bloom, E. Bonamente, A. W. Borgland, J. Bregeon, A. Brez, M. Brigida, P. Bruel, T. H. Burnett, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, J. M. Casandjian, C. Cecchi, Ö. Çelik, A. Chekhtman, C. C. Cheung, J. Chiang, A. N. Cillis, S. Ciprini, R. Claus, J. Cohen-Tanugi, L. R. Cominsky, J. Conrad, S. Cutini, C. D. Dermer, A. de Angelis, F. de Palma, E. do Couto e Silva, P. S. Drell, A. Drlica-Wagner, R. Dubois, D. Dumora, C. Farnier, C. Favuzzi, S. J. Fegan, W. B. Focke, P. Fortin, M. Frailis, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Gehrels, S. Germani, G. Giavitto, B. Giebels, N. Giglietto, F. Giordano, T. Glanzman, G. Godfrey, I. A. Grenier, M.-H. Grondin, J. E. Grove, L. Guillemot, S. Guiriec, Y. Hanabata, A. K. Harding, M. Hayashida, R. E. Hughes, M. S. Jackson, G. Jóhannesson, A. S. Johnson, T. J. Johnson, W. N. Johnson, T. Kamae, H. Katagiri, J. Kataoka, N. Kawai, M. Kerr, J. Knödlseder, M. L. Kocian, M. Kuss, J. Lande, L. Latronico, S.-H. Lee, M. Lemoine-Goumard, F. Longo, F. Loparco, B. Lott, M. N. Lovellette, P. Lubrano, G. M. Madejski, A. Makeev, M. N. Mazziotta, C. Meurer, P. F. Michelson, W. Mitthumsiri, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, T. Nakamori, P. L. Nolan, J. P. Norris, E. Nuss, T. Ohsugi, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, J. H. Panetta, D. Parent, V. Pelassa, M. Pepe, M. Pesce-Rollins, F. Piron, T. A. Porter, S. Rainò, R. Rando, M. Razzano, A. Reimer, O. Reimer, T. Reposeur, L. S. Rochester, A. Y. Rodriguez, R. W. Romani, M. Roth, F. Ryde, H. F.-W. Sadrozinski, D. Sanchez, A. Sander, P. M. Saz Parkinson, J. D. Scargle, C. Sgrò, E. J. Siskind, D. A. Smith, P. D. Smith, G. Spandre, P. Spinelli, M. S. Strickman, A. W. Strong, D. J. Suson, H. Tajima, H. Takahashi, T. Takahashi, T. Tanaka, J. B. Thayer, J. G. Thayer, D. J. Thompson, L. Tibaldo, D. F. Torres, G. Tosti, A. Tramacere, Y. Uchiyama, T. L. Usher, A. Van Etten, V. Vasileiou, C. Venter, N. Vilchez, V. Vitale, A. P. Waite, P. Wang, B. L. Winer, K. S. Wood, T. Ylinen, M. Ziegler, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Abdo, A. A., Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Buson, S., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Casandjian, J. M., Cecchi, C., Celik, O., Chekhtman, A., Cheung, C. C., Chiang, J., Cillis, A. N., Ciprini, S., Claus, R., Cohen Tanugi, J., Cominsky, L. R., Conrad, J., Cutini, S., Dermer, C. D., Angelis, A. d., Palma, F. d., Silva, E. D. E., Drell, P. S., Drlica Wagner, A., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Fortin, P., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giavitto, G., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I. A., Grondin, M. H., Grove, J. E., Guillemot, L., Guiriec, S., Hanabata, Y., Harding, A. K., Hayashida, M., Hughes, R. E., Jackson, M. S., Johannesson, G., Johnson, A. S., Johnson, T. J., Johnson, W. N., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knodlseder, J., Kocian, M. L., Kuss, M., Lande, J., Latronico, L., Lee, S. H., Lemoine Goumard, M., Longo, Francesco, Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Mazziotta, M. N., Meurer, C., Michelson, P. F., Mitthumsiri, W., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nakamori, T., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Orlando, E., Ormes, J. F., Ozaki, M., Paneque, D., Panetta, J. H., Parent, D., Pelassa, V., Pepe, M., Pesce Rollins, M., Piron, F., Porter, T. A., Raino, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Rochester, L. S., Rodriguez, A. Y., Romani, R. W., Roth, M., Ryde, F., Sadrozinski, H. F. W., Sanchez, D., Sander, A., Parkinson, P. M. S., Scargle, J. D., Sgro, C., Siskind, E. J., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Strong, A. W., Suson, D. J., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Etten, A. V., Vasileiou, V., Venter, C., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Ylinen, T., and Ziegler, M.

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Supernova Remnants, supernovae, Ciencias Físicas, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, gamma rays: general, supernovae: individual (IC 443), supernovae: individual: IC 443, Fermi satellite, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, Pulsar wind nebula, High Energy Gamma-ray Astronomy, law.invention, purl.org/becyt/ford/1 [https], Telescope, Spitzer Space Telescope, law, 0103 physical sciences, MAGIC (telescope), Supernova remnant, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, IC443, 010308 nuclear & particles physics, Computer Science::Information Retrieval, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astronomy and Astrophysics, purl.org/becyt/ford/1.3 [https], Galactic plane, Astronomía, gamma rays, Interstellar medium, Space and Planetary Science, Astrophysics - High Energy Astrophysical Phenomena, CIENCIAS NATURALES Y EXACTAS, Fermi Gamma-ray Space Telescope
Abstract

著者人数：172名, Accepted: 2010-02-02, 資料番号: SA1000988000

Published
2010

43. Detection of Gamma-Ray Emission from the Starburst Galaxies M82 and NGC 253 with the Large Area Telescope on Fermi

Author

A. A. Abdo, M. Ackermann, M. Ajello, W. B. Atwood, M. Axelsson, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, B. Berenji, E. D. Bloom, E. Bonamente, A. W. Borgland, J. Bregeon, A. Brez, M. Brigida, P. Bruel, T. H. Burnett, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, J. M. Casandjian, E. Cavazzuti, C. Cecchi, Ö. Çelik, E. Charles, A. Chekhtman, C. C. Cheung, J. Chiang, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, C. D. Dermer, A. de Angelis, F. de Palma, S. W. Digel, E. do Couto e Silva, P. S. Drell, A. Drlica-Wagner, R. Dubois, D. Dumora, C. Farnier, C. Favuzzi, S. J. Fegan, W. B. Focke, L. Foschini, M. Frailis, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Gehrels, S. Germani, B. Giebels, N. Giglietto, F. Giordano, T. Glanzman, G. Godfrey, I. A. Grenier, M.-H. Grondin, J. E. Grove, L. Guillemot, S. Guiriec, Y. Hanabata, A. K. Harding, M. Hayashida, E. Hays, R. E. Hughes, G. Jóhannesson, A. S. Johnson, R. P. Johnson, W. N. Johnson, T. Kamae, H. Katagiri, J. Kataoka, N. Kawai, M. Kerr, J. Knödlseder, M. L. Kocian, M. Kuss, J. Lande, L. Latronico, M. Lemoine-Goumard, F. Longo, F. Loparco, B. Lott, M. N. Lovellette, P. Lubrano, G. M. Madejski, A. Makeev, M. N. Mazziotta, W. McConville, J. E. McEnery, C. Meurer, P. F. Michelson, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, T. Nakamori, P. L. Nolan, J. P. Norris, E. Nuss, T. Ohsugi, N. Omodei, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, J. H. Panetta, D. Parent, V. Pelassa, M. Pepe, M. Pesce-Rollins, F. Piron, T. A. Porter, S. Rainò, R. Rando, M. Razzano, A. Reimer, O. Reimer, T. Reposeur, S. Ritz, A. Y. Rodriguez, R. W. Romani, M. Roth, F. Ryde, H. F.-W. Sadrozinski, A. Sander, P. M. Saz Parkinson, J. D. Scargle, A. Sellerholm, C. Sgrò, M. S. Shaw, D. A. Smith, P. D. Smith, G. Spandre, P. Spinelli, M. S. Strickman, A. W. Strong, D. J. Suson, H. Takahashi, T. Tanaka, J. B. Thayer, J. G. Thayer, D. J. Thompson, L. Tibaldo, O. Tibolla, D. F. Torres, G. Tosti, A. Tramacere, Y. Uchiyama, T. L. Usher, V. Vasileiou, N. Vilchez, V. Vitale, A. P. Waite, P. Wang, B. L. Winer, K. S. Wood, T. Ylinen, M. Ziegler, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Abdo, A. A., Ackermann, M., Ajello, M., Atwood, W. B., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Bloom, E. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Celik, O., Charles, E., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen Tanugi, J., Conrad, J., Dermer, C. D., Angelis, A. d., Palma, F. d., Digel, S. W., Silva, E. D. E., Drell, P. S., Drlica Wagner, A., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Foschini, L., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I. A., Grondin, M. H., Grove, J. E., Guillemot, L., Guiriec, S., Hanabata, Y., Harding, A. K., Hayashida, M., Hays, E., Hughes, R. E., Johannesson, G., Johnson, A. S., Johnson, R. P., Johnson, W. N., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knodlseder, J., Kocian, M. L., Kuss, M., Lande, J., Latronico, L., Lemoine Goumard, M., Longo, Francesco, Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Mazziotta, M. N., Mcconville, W., Mcenery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nakamori, T., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Ozaki, M., Paneque, D., Panetta, J. H., Parent, D., Pelassa, V., Pepe, M., Pesce Rollins, M., Piron, F., Porter, T. A., Raino, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rodriguez, A. Y., Romani, R. W., Roth, M., Ryde, F., Sadrozinski, H. F. W., Sander, A., Parkinson, P. M. S., Scargle, J. D., Sellerholm, A., Sgro, C., Shaw, M. S., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Strong, A. W., Suson, D. J., Takahashi, H., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Tibolla, O., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), and 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)

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], galaxies: individual: M82 NGC 253, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Cosmic ray, Fermi satellite, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, High Energy Gamma-ray Astronomy, NGC 253), law.invention, Telescope, Spitzer Space Telescope, law, 0103 physical sciences, galaxies: individual (M82, 010303 astronomy & astrophysics, Cosmic rays, galaxies: individual (M82, NGC 253), gamma rays: general, radiation mechanisms: non-thermal, Astrophysics::Galaxy Astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, Star formation, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Gamma ray, Sigma, Astronomy and Astrophysics, Galaxies, Galaxy, Space and Planetary Science, cosmic rays, Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope
Abstract

著者人数：170名, Accepted: 2009-12-14, 資料番号: SA1000986000

Published
2010

44. Detection of 16 gamma-ray pulsars through blind frequency searches using the Fermi LAT

Author

A. W. Borgland, W. B. Atwood, S. Germani, Grzegorz Madejski, Nicola Giglietto, A. P. Waite, Denis Bastieri, P. L. Nolan, A. De Luca, A. Reimer, M. N. Lovellette, Jeffrey D. Scargle, P. A. Caraveo, Persis S. Drell, C. Meurer, N. Kawai, R. A. Cameron, P. Fusco, Sylvain Guiriec, Francesco Longo, Carmelo Sgrò, Riccardo Rando, E. Hays, T. H. Burnett, Richard Dubois, Gino Tosti, R. E. Hughes, E. J. Siskind, Joel R. Primack, Claudia Cecchi, Johann Cohen-Tanugi, G.L. Godfrey, Nanda Rea, E. Nuss, P. Giommi, Matthew Kerr, S. J. Fegan, Takaaki Tanaka, Tadayuki Takahashi, W. Mitthumsiri, Paul S. Ray, David Paneque, M. Kuss, S. Rainò, M. S. Strickman, D. J. Thompson, Magnus Axelsson, V. Vasileiou, N. Vilchez, Jonathan F. Ormes, Kent S. Wood, Markus Ackermann, Jean Ballet, M. Lemoine-Goumard, Karen Watters, B. Lott, M. T. Wolff, C. Farnier, H. Tajima, M. Brigida, C. C. Cheung, T. Glanzman, A. Sander, R. Claus, F. Piron, Paul J. Wang, Stefano Ciprini, Jean-Luc Starck, J. M. Casandjian, G. A. Caliandro, A. Brez, Yasunobu Uchiyama, A. van Etten, J. P. Norris, T. Ylinen, Hiromitsu Takahashi, Morihiro Hayashida, Alice K. Harding, P. M. Saz Parkinson, A. Morselli, V. Vitale, A. Chekhtman, Tsunefumi Mizuno, David S. Smith, R. P. Johnson, T. Ohsugi, F. Gargano, Elliott D. Bloom, B. M. Baughman, Nicola Omodei, Luca Latronico, J. Bregeon, L. Guillemot, A. Y. Rodriguez, Brandon Anderson, M. Dormody, C. Monte, A. A. Abdo, E. Orlando, J. E. Grove, Yasushi Fukazawa, P. Spinelli, M. N. Mazziotta, F. Giordano, M. L. Kocian, Stefan Funk, T. A. Porter, Roger W. Romani, M.-H. Grondin, F. de Palma, J. G. Thayer, Seth Digel, Tyrel J. Johnson, A. Makeev, Dario Gasparrini, P. D. Smith, E. Do Couto E Silva, Brian L Winer, M. E. Monzani, P. Lubrano, Luca Baldini, Giovanni F. Bignami, H. F.W. Sadrozinski, Ronaldo Bellazzini, Emanuele Bonamente, M. Pierbattista, I. A. Grenier, Gudlaugur Johannesson, J. Lande, F. Loparco, M. Ziegler, Felix Ryde, A. De Angelis, Jürgen Knödlseder, Y. Hanabata, C. Favuzzi, Gloria Spandre, Guido Barbiellini, B. Giebels, Matthew G. Baring, A. Tramacere, S. Murgia, S. Ritz, Charles D. Dermer, D. Parent, Melissa Pesce-Rollins, O. Tibolla, D. J. Suson, B. Berenji, W. McConville, Pascal Bruel, W. N. Johnson, Peter F. Michelson, Hideaki Katagiri, T. Kamae, Igor V. Moskalenko, Olaf Reimer, Jan Conrad, Diego F. Torres, V. Pelassa, C. Gwon, Julie McEnery, Neil Gehrels, David Sánchez, Marco Ajello, L. Tibaldo, Jun Kataoka, Ö. Çelik, S. Cutini, M. Pepe, D. Dumora, James Chiang, Roger Blandford, M. Marelli, M. Razzano, L.S. Rochester, T. L. Usher, Keith Bechtol, T. Reposeur, Abdo, A. A., Ackermann, M., Ajello, M., Anderson, B., Atwood, W. B., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Baring, M. G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Berenji, B., Bignami, G. F., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Casandjian, J. M., Cecchi, C., Celik, O., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen Tanugi, J., Conrad, J., Cutini, S., Dermer, C. D., Angelis, A. d., Luca, A. d., Palma, F. d., Digel, S. W., Dormody, M., Silva, E. D. E., Drell, P. S., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giommi, P., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I. A., Grondin, M. H., Grove, J. E., Guillemot, L., Guiriec, S., Gwon, C., Hanabata, Y., Harding, A. K., Hayashida, M., Hays, E., Hughes, R. E., Johannesson, G., Johnson, R. P., Johnson, T. J., Johnson, W. N., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knodlseder, J., Kocian, M. L., Kuss, M., Lande, J., Latronico, L., Lemoine Goumard, M., Longo, Francesco, Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Madejski, G. M., Makeev, A., Marelli, M., Mazziotta, M. N., Mcconville, W., Mcenery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Parent, D., Pelassa, V., Pepe, M., Pesce Rollins, M., Pierbattista, M., Piron, F., Porter, T. A., Primack, J. R., Raino, S., Rando, R., Ray, P. S., Razzano, M., Rea, N., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rochester, L. S., Rodriguez, A. Y., Romani, R. W., Ryde, F., Sadrozinski, H. F. W., Sanchez, D., Sander, A., Parkinson, P. M. S., Scargle, J. D., Sgro, C., Siskind, E. J., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Starck, J. L., Strickman, M. S., Suson, D. J., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Thayer, J. G., Thompson, D. J., Tibaldo, L., Tibolla, O., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Etten, A. V., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Watters, K., Winer, B. L., Wolff, M. T., Wood, K. S., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), 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), Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, and High Energy Astrophys. & Astropart. Phys (API, FNWI)

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, Fermi satellite, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, High Energy Gamma-ray Astronomy, Pulsar, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, 010306 general physics, Supernova remnant, 010303 astronomy & astrophysics, Pulsars, Astrophysics::Galaxy Astrophysics, Physics, Multidisciplinary, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics - Astrophysics of Galaxies, Neutron star, Stars, Supernova, Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope, X-ray pulsar
Abstract

Pulsars are rapidly-rotating, highly-magnetized neutron stars emitting radiation across the electromagnetic spectrum. Although there are more than 1800 known radio pulsars, until recently, only seven were observed to pulse in gamma rays and these were all discovered at other wavelengths. The Fermi Large Area Telescope makes it possible to pinpoint neutron stars through their gamma-ray pulsations. We report the detection of 16 gamma-ray pulsars in blind frequency searches using the LAT. Most of these pulsars are coincident with previously unidentified gamma-ray sources, and many are associated with supernova remnants. Direct detection of gamma-ray pulsars enables studies of emission mechanisms, population statistics and the energetics of pulsar wind nebulae and supernova remnants., Comment: Corresponding authors: Michael Dormody, Paul S. Ray, Pablo M. Saz Parkinson, Marcus Ziegler

Published
2009

45. Detection of high-energy gamma-ray emission from the globular cluster 47 Tucanae with Fermi

Author

I. A. Grenier, Marco Ajello, Francesco Longo, J. B. Thayer, T. H. Burnett, M. Ziegler, A. Sander, N. Kawai, Yasunobu Uchiyama, L. Tibaldo, V. Vasileiou, Kent S. Wood, C. Meurer, Luca Latronico, P. Wang, Hartmut Sadrozinski, Gloria Spandre, Denis Bastieri, N.A. Webb, Alessandro Brez, Gino Tosti, C. C. Cheung, Igor V. Moskalenko, Luca Baldini, R. E. Hughes, Emanuele Bonamente, A. Chekhtman, T. L. Usher, J. Lande, Sylvain Guiriec, Olaf Reimer, D. Horan, Jean Ballet, A. Y. Rodriguez, V. Pelassa, M. Pierbattista, R. Dubois, J. M. Casandjian, P. L. Nolan, L. Guillemot, D. J. Thompson, W. B. Focke, Stefano Ciprini, C. Farnier, B. M. Baughman, Diego F. Torres, P. Spinelli, P. D. Smith, C. Favuzzi, M. Razzano, S. Rainò, Tsunefumi Mizuno, Eric Charles, P. M. Saz Parkinson, C. Monte, T. Ohsugi, D. Parent, S. Murgia, B. Lott, Julie McEnery, Neil Gehrels, Hiromitsu Takahashi, David Sánchez, Elliott D. Bloom, W. B. Atwood, D. J. Suson, F. Piron, Pascal Bruel, Ö. Çelik, A. S. Johnson, S. Cutini, Francesco Giordano, T. Kamae, T. Glanzman, Nicola Giglietto, Jürgen Knödlseder, Nicola Omodei, M. Pepe, W. N. Johnson, W. McConville, Claudia Cecchi, Y. Hanabata, Randall P. Johnson, Carmelo Sgrò, Riccardo Rando, Alice K. Harding, Dario Gasparrini, Peter F. Michelson, M. N. Mazziotta, J. G. Thayer, A. Tramacere, James Chiang, A. A. Abdo, E. Orlando, P. Lubrano, B. Giebels, F. Gargano, Roger Blandford, Roger W. Romani, E. Nuss, G. Godfrey, Sylvain Chaty, M. N. Lovellette, Jean-Luc Starck, T. Reposeur, P. A. Caraveo, J. E. Grove, David Paneque, Takaaki Tanaka, D. Dumora, J. P. Norris, Hideaki Katagiri, A. Morselli, Persis S. Drell, Yasushi Fukazawa, Johann Cohen-Tanugi, Nanda Rea, A. W. Borgland, M. Kuss, J. F. Ormes, M. S. Strickman, V. Vitale, M. Roth, J. Bregeon, E. Hays, Seth Digel, M. Brigida, F. de Palma, F. Kuehn, E. Do Couto E Silva, T. Ylinen, J. H. Panetta, Magnus Axelsson, M. Lemoine-Goumard, Brian L Winer, N. Vilchez, Hiroyasu Tajima, Tyrel J. Johnson, T. A. Porter, Jan Conrad, Markus Ackermann, R. A. Cameron, Morihiro Hayashida, A. A. Moiseev, Keith Bechtol, M. Dormody, R. Claus, P. Fusco, F. Loparco, Gudlaugur Johannesson, A. Makeev, W. Mitthumsiri, Matthew Kerr, Felix Ryde, M. E. Monzani, G. A. Caliandro, S. J. Fegan, Guido Barbiellini, M. Frailis, L. S. Rochester, B. Berenji, Ronaldo Bellazzini, S. Ritz, Charles D. Dermer, David Smith, S. Germani, A. Reimer, Abdo, A. A., Ackermann, M., Ajello, M., Atwood, W. B., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T. H., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Casandjian, J. M., Cecchi, C., Celik, O., Charles, E., Chaty, S., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen Tanugi, J., Conrad, J., Cutini, S., Dermer, C. D., Palma, F. d., Digel, S. W., Dormody, M., Silva, E. D. E., Drell, P. S., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Focke, W. B., Frailis, M., Fukazawa, Y., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guillemot, L., Guiriec, S., Hanabata, Y., Harding, A. K., Hayashida, M., Hays, E., Horan, D., Hughes, R. E., Johannesson, G., Johnson, A. S., Johnson, R. P., Johnson, T. J., Johnson, W. N., Kamae, T., Katagiri, H., Kawai, N., Kerr, M., Knodlseder, J., Kuehn, F., Kuss, M., Lande, J., Latronico, L., Lemoine Goumard, M., Longo, Francesco, Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Makeev, A., Mazziotta, M. N., Mcconville, W., Mcenery, J. E., Meurer, C., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Panetta, J. H., Parent, D., Pelassa, V., Pepe, M., Pierbattista, M., Piron, F., Porter, T. A., Raino, S., Rando, R., Razzano, M., Rea, N., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rochester, L. S., Rodriguez, A. Y., Romani, R. W., Roth, M., Ryde, F., Sadrozinski, H. F. W., Sanchez, D., Sander, A., Parkinson, P. M. S., Sgro, C., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Starck, J. L., Strickman, M. S., Suson, D. J., Tajima, H., Takahashi, H., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Vasileiou, V., Vilchez, N., Vitale, V., Wang, P., Webb, N., Winer, B. L., Wood, K. S., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, High Energy Astrophys. & Astropart. Phys (API, FNWI), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), and 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)

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, Population, Fermi satellite, Astrophysics, 01 natural sciences, High Energy Gamma-ray Astronomy, Globular Clusters, Luminosity, Pulsar, Millisecond pulsar, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, education.field_of_study, Multidisciplinary, 010308 nuclear & particles physics, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Neutron star, Star cluster, Globular cluster, Fermi Gamma-ray Space Telescope
Abstract

Gamma-Ray Pulsar Bonanza Most of the pulsars we know about were detected through their radio emission; a few are known to pulse gamma rays but were first detected at other wavelengths (see the Perspective by Halpern ). Using the Fermi Gamma-Ray Space Telescope, Abdo et al. (p. 840 , published online 2 July; see the cover) report the detection of 16 previously unknown pulsars based on their gamma-ray emission alone. Thirteen of these coincide with previously unidentified gamma-ray sources, solving the 30-year-old mystery of their identities. Pulsars are fast-rotating neutron stars. With time they slow down and cease to radiate; however, if they are in a binary system, they can have their spin rates increased by mass transfer from their companion stars, starting a new life as millisecond pulsars. In another study, Abdo et al. (p. 845 ) report the detection of gamma-ray emission from the globular cluster 47 Tucanae, which is coming from an ensemble of millisecond pulsars in the cluster's core. The data imply that there are up to 60 millisecond pulsars in 47 Tucanae, twice as many as predicted by radio observations. In a further companion study, Abdo et al. (p. 848 , published online 2 July) searched Fermi Large Area Telescope data for pulsations from all known millisecond pulsars outside of stellar clusters, finding gamma-ray pulsations for eight of them. Their properties resemble those of other gamma-ray pulsars, suggesting that they share the same basic emission mechanism. Indeed, both sets of pulsars favor emission models in which the gamma rays are produced in the outer magnetosphere of the neutron star.

Published
2009

46. SEARCH for EXTENDED GAMMA-RAY EMISSION from the VIRGO GALAXY CLUSTER with FERMI-LAT

Author

R. Buehler, Peter F. Michelson, Marcello Giroletti, Carmelo Sgrò, Riccardo Rando, A. Chekhtman, P. Lubrano, Hiromitsu Takahashi, E. Nuss, David Paneque, M. Kuss, Johan Bregeon, F. Spada, R. Caputo, D. Horan, M. Orienti, A. Morselli, Stefan Larsson, D. Malyshev, Dario Gasparrini, E. Orlando, Andrea Albert, Johann Cohen-Tanugi, Miguel A. Sánchez-Conde, Stefano Ciprini, J. M. Casandjian, Marco Ajello, Francesco Longo, Tesla E. Jeltema, J. B. Thayer, M. N. Mazziotta, L. Di Venere, E. Troja, Seth Digel, Igor V. Moskalenko, Hiroyasu Tajima, Olaf Reimer, Liang Li, Jan Conrad, G. A. Gomez-Vargas, S. Buson, R. Bonino, F. Loparco, Guido Barbiellini, M. Gustafsson, M. Mayer, Elliott D. Bloom, S. Murgia, F. Gargano, Luca Latronico, G. A. Caliandro, A. Franckowiak, I. A. Grenier, M. Caragiulo, S. Maldera, Claudia Cecchi, Ronaldo Bellazzini, S. Rainò, Diego F. Torres, C. Favuzzi, Tsunefumi Mizuno, Eric Charles, J. F. Ormes, E. Cavazzuti, J. Li, K. S. Wood, R. A. Cameron, G. Chiaro, Stefan Funk, T. Ohsugi, Gloria Spandre, Yasushi Fukazawa, T. J. Brandt, A. S. Johnson, S. Cutini, P. Fusco, R. Desiante, Gabrijela Zaharijas, A. De Angelis, John W. Hewitt, G. Tosti, E. J. Siskind, G. Godfrey, T. Jogler, Melissa Pesce-Rollins, Matthew Wood, P. Bruel, Giacomo Vianello, Markus Ackermann, F. de Palma, A. B. Hill, Vahé Petrosian, Luca Baldini, Sylvain Guiriec, W. B. Focke, P. Spinelli, Francesco Giordano, A. Reimer, Eugenio Bottacini, Alberto Manfreda, Elisabetta Bissaldi, G. Pivato, T. Glanzman, Denis Bastieri, T. A. Porter, M. Razzano, Filippo D'Ammando, Keith Bechtol, André Schulz, W. B. Atwood, J. S. Perkins, Nicola Giglietto, M. N. Lovellette, P. A. Caraveo, Persis S. Drell, Stephan Zimmer, M. E. Monzani, Emma Storm, S. J. Fegan, F. Piron, Laboratoire Univers et Particules de Montpellier (LUPM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), 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), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), 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, Fermi-LAT, Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Ackermann M, Ajello M, Albert A, Atwood WB, Baldini L, Barbiellini G, Bastieri D, Bechtol K, Bellazzini R, Bissaldi E, Bloom ED, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caputo R, Caragiulo M, Caraveo PA, Casandjian JM, Cavazzuti E, Cecchi C, Charles E, Chekhtman A, Chiaro G, Ciprini S, Cohen-Tanugi J, Conrad J, Cutini S, DAmmando F, de Angelis A, De Palma F, Desiante R, Digel SW, Di Venere L, Drell PS, Favuzzi C, Fegan SJ, Focke WB, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Glanzman T, Godfrey G, Gomez-Vargas GA, Grenier A, Guiriec S, Gustafsson M, Hewitt JW, Hill AB, Horan D, Jeltema TE, Jogler T, Johnson AS, Kuss M, Larsson S, Latronico L, Li J, Li L, Longo F, Loparco F, Lovellette MN, Lubrano P, Maldera S, Malyshev D, Manfreda A, Mayer M, Mazziotta MN, Michelson PF, Mizuno T, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Nuss E, Ohsugi T, Orienti M, Orlando E, Ormes JF, Paneque D, Perkins JS, Pesce-Rollins M, Petrosian V, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Reimer A, Reimer O, Sanchez-Conde M, Schulz A, Sgro C, Siskind EJ, Spada F, Spandre G, Spinelli P, Storm E, Tajima H, Takahashi H, Thayer JB, Torres DF, Tosti G, Troja E, Vianello G, Wood KS, Wood M, Zaharijas G, Zimmer S, Pinzke A, ITA, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Ackermann, M., Ajello, M., Albert, A., Atwood, W. B., Baldini, L., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Bissaldi, E., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caputo, R., Caragiulo, M., Caraveo, P. A., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Chiaro, G., Ciprini, S., Cohen Tanugi, J., Conrad, J., Cutini, S., D'Ammando, F., Angelis, A. De, Palma, F. De, Desiante, R., Digel, S. W., Venere, L. Di, Drell, P. S., Favuzzi, C., Fegan, S. J., Focke, W. B., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Gomez Vargas, G. A., Grenier, I. A., Guiriec, S., Gustafsson, M., Hewitt, J. W., Hill, A. B., Horan, D., Jeltema, T. E., Jogler, T., Johnson, A. S., Kuss, M., Larsson, S., Latronico, L., Li, J., Li, L., Longo, Francesco, Loparco, F., Lovellette, M. N., Lubrano, P., Maldera, S., Malyshev, D., Manfreda, A., Mayer, M., Mazziotta, M. N., Michelson, P. F., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nuss, E., Ohsugi, T., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Perkins, J. S., Pesce Rollins, M., Petrosian, V., Piron, F., Pivato, G., Porter, T. A., Rainó, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Sánchez Conde, M., Schulz, A., Sgró, C., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Storm, E., Tajima, H., Takahashi, H., Thayer, J. B., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., Wood, M., Zaharijas, G., and Zimmer, S.

Subjects
galaxies: clusters: individual, Nuclear and High Energy Physics, galaxies: clusters: individual (Virgo), Astrophysics::High Energy Astrophysical Phenomena, Dark matter, gamma-rays: galaxies: cluster, background: model, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, cosmic radiation: interaction, GLAST, cross section: annihilation, emission: model, Galactic halo, pressure, High Energy Physics - Phenomenology (hep-ph), galaxy: halo, dark matter: halo, galaxies: cluster [gamma-rays], gamma-rays: galaxies: clusters, gamma-rays: general, Galaxy cluster, Astrophysics::Galaxy Astrophysics, dark matter: angular distribution, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Annihilation, clusters: individual (Virgo) [galaxies], flux: enhancement, Gamma ray, Astronomy and Astrophysics, dark matter: annihilation, star: model, Dark matter halo, High Energy Physics - Phenomenology, VIRGO, gamma ray: emission, Space and Planetary Science, ddc:520, galaxy: cluster, Halo, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], general [gamma-rays], Fermi Gamma-ray Space Telescope
Abstract

Galaxy clusters are one of the prime sites to search for dark matter (DM) annihilation signals. Depending on the substructure of the DM halo of a galaxy cluster and the cross sections for DM annihilation channels, these signals might be detectable by the latest generation of $\gamma$-ray telescopes. Here we use three years of Fermi Large Area Telescope (LAT) data, which are the most suitable for searching for very extended emission in the vicinity of nearby Virgo galaxy cluster. Our analysis reveals statistically significant extended emission which can be well characterized by a uniformly emitting disk profile with a radius of 3\deg that moreover is offset from the cluster center. We demonstrate that the significance of this extended emission strongly depends on the adopted interstellar emission model (IEM) and is most likely an artifact of our incomplete description of the IEM in this region. We also search for and find new point source candidates in the region. We then derive conservative upper limits on the velocity-averaged DM pair annihilation cross section from Virgo. We take into account the potential $\gamma$-ray flux enhancement due to DM sub-halos and its complex morphology as a merging cluster. For DM annihilating into $b\overline{b}$, assuming a conservative sub-halo model setup, we find limits that are between 1 and 1.5 orders of magnitude above the expectation from the thermal cross section for $m_{\mathrm{DM}}\lesssim100\,\mathrm{GeV}$. In a more optimistic scenario, we exclude $\langle \sigma v \rangle\sim3\times10^{-26}\,\mathrm{cm^{3}\,s^{-1}}$ for $m_{\mathrm{DM}}\lesssim40\,\mathrm{GeV}$ for the same channel. Finally, we derive upper limits on the $\gamma$-ray-flux produced by hadronic cosmic-ray interactions in the inter cluster medium. We find that the volume-averaged cosmic-ray-to-thermal pressure ratio is less than $\sim6\%$., Comment: 15 pages, 11 figures, 4 tables, accepted for publication in ApJ; corresponding authors: T. Jogler, S. Zimmer & A. Pinzke

Published
2015

47. PSR J1906+0722: An Elusive Gamma-ray Pulsar

Author

R. Desiante, A. De Angelis, Eric Charles, D. J. Suson, C. Cecchi, Carmelo Sgrò, Riccardo Rando, Pablo Torne, Giacomo Vianello, R. Bonino, M. Orienti, Johann Cohen-Tanugi, S. Cutini, A. S. Johnson, Denis Bastieri, P. Fusco, Xian Hou, Alice K. Harding, F. de Palma, Francesco Longo, R. Claus, Michael Kramer, C. Aulbert, Ronaldo Bellazzini, F. Krauss, F. Loparco, T. Glanzman, A. Morselli, A. Franckowiak, Dario Gasparrini, David Champion, T. Jogler, H. Fehrmann, S. Murgia, G. A. Caliandro, Hiromitsu Takahashi, J. Li, Frederic Piron, Sylvain Guiriec, Martino Marelli, B. Machenschalk, Eleonora Troja, M. Yassine, M. Caragiulo, P. M. Saz Parkinson, J. Chiang, A. B. Hill, Michael Mayer, M. Schaal, S. Rainò, Tsunefumi Mizuno, A. Reimer, P. Spinelli, M. Kuss, W. B. Focke, O. Bock, G. Chiaro, Jean Ballet, A. Cuéllar, J. E. Grove, F. Spada, Holger J. Pletsch, Stefano Ciprini, T. J. Brandt, H. Laffon, John W. Hewitt, Elizabeth C. Ferrara, L. Latronico, Nicola Giglietto, Francesco Giordano, Benjamin William Allen, M. E. Monzani, Diego F. Torres, G. Pivato, Matthew Wood, Elena Orlando, J. B. Thayer, C. Favuzzi, E. J. Siskind, Pascal Bruel, M. Razzano, Gloria Spandre, P. A. Caraveo, A. Schulz, Filippo D'Ammando, Eugenio Bottacini, Persis S. Drell, Elizabeth Hays, Alberto Manfreda, Peter F. Michelson, M. N. Mazziotta, Elisabetta Bissaldi, L. Tibaldo, P. Lubrano, D. Paneque, S. Buson, F. Gargano, Gudlaugur Johannesson, H.-B. Eggenstein, J. Wu, Lucas Guillemot, Liang Li, Guido Barbiellini, R. A. Cameron, Eric Nuss, I. A. Grenier, T. Ohsugi, M. Ackermann, G. Godfrey, Gino Tosti, K. S. Wood, Igor V. Moskalenko, D. Horan, Johan Bregeon, C. J. Clark, Stefan Larsson, M. N. Lovellette, Melissa Pesce-Rollins, Luca Baldini, A. Chekhtman, Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Université d'Orléans (UO)-Observatoire des Sciences de l'Univers en région Centre (OSUC), PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Particules de Montpellier (LUPM), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Clark, C. J., Pletsch, H. J., Wu, J., Guillemot, L., Ackermann, M., Allen, B., De Angelis, A., Aulbert, C., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Bock, O., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buson, S., Caliandro, G. A., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Cecchi, C., Champion, D. J., Charles, E., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., Cohen Tanugi, J., Cuéllar, A., Cutini, S., D'Ammando, F., Desiante, R., Drell, P. S., Eggenstein, H. B., Favuzzi, C., Fehrmann, H., Ferrara, E. C., Focke, W. B., Franckowiak, A., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guiriec, S., Harding, A. K., Hays, E., Hewitt, J. W., Hill, A. B., Horan, D., Hou, X., Jogler, T., Johnson, A. S., Jóhannesson, G., Kramer, M., Krauss, F., Kuss, M., Laffon, H., Larsson, S., Latronico, L., Li, J., Li, L., Longo, Francesco, Loparco, F., Lovellette, M. N., Lubrano, P., Machenschalk, B., Manfreda, A., Marelli, M., Mayer, M., Mazziotta, M. N., Michelson, P. F., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nuss, E., Ohsugi, T., Orienti, M., Orlando, E., Palma, F. De, Paneque, D., Pesce Rollins, M., Piron, F., Pivato, G., Rainò, S., Rando, R., Razzano, M., Reimer, A., Parkinson, P. M. Saz, Schaal, M., Schulz, A., Sgrò, C., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Takahashi, H., Thayer, J. B., Tibaldo, L., Torne, P., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., Wood, M., Yassine, Manal, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-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 d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-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 de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National d’Études Spatiales [Paris] (CNES), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Clark CJ, Pletsch HJ, Wu J, Guillemot L, Ackermann M, Allen B, de Angelis A, Aulbert C, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bellazzini R, Bissaldi E, Bock O, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Bruel P, Buson S, Caliandro GA, Cameron RA, Caragiulo M, Caraveo PA, Cecchi C, Champion DJ, Charles E, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Claus R, Cohen-Tanugi J, Cuellar A, Cutini S, DAmmando F, Desiante R, Drell PS, Eggenstein HB, Favuzzi C, Fehrmann H, Ferrara EC, Focke WB, Franckowiak A, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Glanzman T, Godfrey G, Grenier IA, Grove JE, Guiriec S, Harding AK, Hays E, Hewitt JW, Hill AB, Horan D, Hou X, Jogler T, Johnson AS, Johannesson G, Kramer M, Krauss F, Kuss M, Laffon H, Larsson S, Latronico L, Li J, Li L, Longo F, Loparco F, Lovellette MN, Lubrano P, Machenschalk B, Manfreda A, Marelli M, Mayer M, Mazziotta MN, Michelson PF, Mizuno T, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Nuss E, Ohsugi T, Orienti M, Orlando E, de Palma F, Paneque D, Pesce-Rollins M, Piron F, Pivato G, Raino S, Rando R, Razzano M, Reimer A, Parkinson PMS, Schaal M, Schulz A, Sgro C, Siskind EJ, Spada F, Spandre G, Spinelli P, Suson DJ, Takahashi H, Thayer JB, Tibaldo L, Torne P, Torres DF, Tosti G, Troja E, Vianello G, Wood KS, Wood M, and Yassine M

Subjects
gamma rays: stars, pulsars: individual: PSR J1906+0722, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Flux, Astrophysics, star [gamma rays], law.invention, Gamma rays: stars, Telescope, Pulsar, law, individual (PSR J1906+0722) [pulsars], Supernova remnant, Astrophysics::Galaxy Astrophysics, Spin-½, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, [PHYS]Physics [physics], Molecular cloud, Gamma ray, Astronomy and Astrophysics, Space and Planetary Science, ddc:520, pulsars: individual (PSR J1906+0722), Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], gamma rays: stars, Fermi Gamma-ray Space Telescope
Abstract

We report the discovery of PSR J1906+0722, a gamma-ray pulsar detected as part of a blind survey of unidentified Fermi Large Area Telescope (LAT) sources being carried out on the volunteer distributed computing system, Einstein@Home. This newly discovered pulsar previously appeared as the most significant remaining unidentified gamma-ray source without a known association in the second Fermi-LAT source catalog (2FGL) and was among the top ten most significant unassociated sources in the recent third catalog (3FGL). PSR J1906+0722 is a young, energetic, isolated pulsar, with a spin frequency of $8.9$ Hz, a characteristic age of $49$ kyr, and spin-down power $1.0 \times 10^{36}$ erg s$^{-1}$. In 2009 August it suffered one of the largest glitches detected from a gamma-ray pulsar ($\Delta f / f \approx 4.5\times10^{-6}$). Remaining undetected in dedicated radio follow-up observations, the pulsar is likely radio-quiet. An off-pulse analysis of the gamma-ray flux from the location of PSR J1906+0722 revealed the presence of an additional nearby source, which may be emission from the interaction between a neighboring supernova remnant and a molecular cloud. We discuss possible effects which may have hindered the detection of PSR J1906+0722 in previous searches and describe the methods by which these effects were mitigated in this survey. We also demonstrate the use of advanced timing methods for estimating the positional, spin and glitch parameters of difficult-to-time pulsars such as this., Comment: 7 pages, 4 figures, accepted for publication in Astrophysical Journal Letters

Published
2015

48. Evolución clínica y psicosocial de los pacientes afectados por trastorno de angustia con o sin agorafobia: resultados de un estudio de seguimiento naturalista

Author

R Sitzia, Adolfo Maria Macciardi, S. Murgia, Bernardo Carpiniello, A Baita, Mauro Giovanni Carta, and Alfredo Carlo Altamura

Subjects
03 medical and health sciences, 0302 clinical medicine, business.industry, Medicine, business, 030217 neurology & neurosurgery, 030227 psychiatry
Abstract

ResumenObjetivo:Se llevó a cabo un estudio de seguimiento clínico y psicosocial de una cohorte de 85 pacientes afectados por trastorno de angustia (TA) con o sin agorafobia una media de 40 meses después de la observación inicial y después de una duración media de la enfermedad de 8 años.Métodos:Ochenta y cinco de los 130 pacientes afectados por TA con o sin agorafobia según los criterios del DSM-III-R, examinados entre 1990 y 1995 en una clínica ambulatoria, fueron examinados de nuevo en 1997/1998 utilizando la misma evaluación clínica estandarizada realizada en la admisión. Los pacientes recibieron también una entrevista diagnóstica estructurada (Mini Entrevista Neuropsiquiátrica Internacional, MINI) y una evaluación psicosocial (Escala de Discapacidad de Sheehan, DISS; Escala de Satisfacción con los Dominios Vitales de Baker e Intagliata, SLDS).Resultados:En el seguimiento, el porcentaje de pacientes que había mejorado o estaba en remisión era considerablemente más alto entre aquellos a los que se diagnosticó inicialmente con TA en relación con los diagnosticados con trastorno de angustia con agorafobia (TAA): El 38% de los pacientes con TA y el 20% de los pacientes con TAA estaban en remisión clínica. Se encontraron síntomas de angustia y evitación fóbica leves en la mayoría de los pacientes que tenían síntomas todavía (71 y 57%, respectivamente). El 60% aproximadamente de los pacientes comunicó una dificultad significativa en la realización de las actividades diarias y el 40% expresó insatisfacción en un 50% al menos de los dominios vitales considerados. El 72% de los sujetos examinados recibía todavía tratamiento farmacológico en el momento del seguimiento.Conclusiones:Los hallazgos del estudio son sugestivos de una enfermedad crónica con un efecto significativo en la calidad de vida cotidiana de los pacientes.

Published
2003

49. Risk for Relatives of Patients with Multiple Sclerosis in Central Sardinia, Italy

Author

Maria Luisa Piras, Raffaela Ferrai, Bruno S. Murgia, Luigina Musu, Luisa Bernardinelli, Anna Ticca, Cristina Montomoli, and Inga Prokopenko

Subjects
Male, Proband, medicine.medical_specialty, Multiple Sclerosis, Epidemiology, Population, Consanguinity, Disease, Risk Assessment, Recurrence risk, Recurrence, Internal medicine, Confidence Intervals, medicine, Humans, Family, Genetic Predisposition to Disease, Sex Distribution, education, Proportional Hazards Models, education.field_of_study, Proportional hazards model, business.industry, Multiple sclerosis, medicine.disease, Confidence interval, Italy, Female, Neurology (clinical), business
Abstract

Multiple sclerosis (MS) is a chronic, inflammatory, disabling disease of the central nervous system, known for its complex interplay between genetic and environmental factors. We used life table techniques to calculate age-adjusted recurrence risks for different categories of relatives of MS patients from Central Sardinia (Italy), a genetically homogeneous, stable population with a high degree of consanguinity. We included 313 probands and a total of 12,717 relatives in the analysis. The overall age-adjusted recurrence risk for relatives of MS probands is 1.90% [95% confidence interval (CI): 1.57–2.30]. The age-adjusted recurrence risk in parents was 1.26% (95% CI 0.60–2.63), in children 2.33% (95% CI 0.09–5.56), in sibs 4.76% (95% CI 3.57–6.32), in second-degree relatives 0.72% (95% CI 0.42–1.22), and in third-degree relatives 1.79% (95% CI 1.27–2.51). The sex of the probands (male) and of the relatives (female), and the number of affected relatives in the family significantly increase the risk of MS in relatives.

Published
2003

50. A selective non toxic OFF-ON fluorescent molecular sensor for probing CdII in living cells

Author

M. Mameli, M. C. Aragoni, M. Arca, C. Caltagirone, F. Demartin, G. De Filippo, F. A. Devillanova, A. Garau, F. Isaia, V. Lippolis, S. Murgia, A. Pintus, FARRUGGIA, GIOVANNA, PRODI, LUCA, ZACCHERONI, NELSI, M. Mameli, M. C. Aragoni, M. Arca, C. Caltagirone, F. Demartin, G. Farruggia, G. De Filippo, F. A. Devillanova, A. Garau, F. Isaia, V. Lippoli, S. Murgia, L. Prodi, A. Pintu, and N. Zaccheroni

Abstract

In spite of the fact that cadmium( II) has been recognized as a highly toxic element and that excessive exposure to this metal ion has been reported to have many adverse effects on human health, very few selective and specific fluorescent probes are available for imaging Cd2+ in living cells. Herein, we report the spectroscopic and photochemical characterization of 5-(5-chloro-8-hydroxyquinolinylmethyl)- 2,8-dithia-5-aza-2,6-pyridinophane (L) as a fluorescent sensor for the selective imaging of Cd2+ in living cells. In particular, the response of L to Cd2+ was first assessed in aqueous solutions, sodium dodecyl sulfate micelles, and liposomes, and subsequently in living cells by fluorescence microscopy techniques. Cytofluorimetric analyses of leukemic HL-60 cells loaded with L also allowed evaluation of the toxicity of the probe and the selective analysis of its intracellular fluorescence in the presence of Cd2+. Furthermore, the 1:1 complex species [Cd(L)H2O]2+ responsible for the OFF–ON chelation enhancement of fluorescence (CHEF) effect on L was structurally characterized; time-dependent DFT calculations allowed the prediction of theoretical excitations, which were comparable with the experimental ones.

Published
2010

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