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1. In-flight measurement of the absolute energy scale of the Fermi Large Area Telescope

Author

Ackermann, M., Ajello, M., Allafort, A., Atwood, W.B., Axelsson, M., Baldini, L., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Bloom, E.D., Bonamente, E., Borgland, A.W., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Buehler, R., Buson, S., Caliandro, G.A., Cameron, R.A., Caraveo, P.A., Casandjian, J.M., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Cutini, S., de Palma, F., Dermer, C.D., Digel, S.W., do Couto e Silva, E., Drell, P.S., Drlica-Wagner, A., Dubois, R., Enoto, T., Falletti, L., Favuzzi, C., Fegan, S.J., Focke, W.B., Fortin, P., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I.A., Grove, J.E., Guiriec, S., Hadasch, D., Hayashida, M., Hays, E., Hughes, R.E., Jóhannesson, G., Johnson, A.S., Johnson, T.J., Kamae, T., Katagiri, H., Kataoka, J., Knödlseder, J., Kuss, M., Lande, J., Latronico, L., Lee, S.-H., Longo, F., Loparco, F., Lovellette, M.N., Lubrano, P., Madejski, G.M., Mazziotta, M.N., McEnery, J.E., Michelson, P.F., Mizuno, T., Moiseev, A.A., Monte, C., Monzani, M.E., Morselli, A., Moskalenko, I.V., Murgia, S., Nakamori, T., Naumann-Godo, M., Nolan, P.L., Norris, J.P., Nuss, E., Ohsugi, T., Okumura, A., Omodei, N., Orlando, E., Ormes, J.F., Ozaki, M., Paneque, D., Panetta, J.H., Parent, D., Pesce-Rollins, M., Pierbattista, M., Piron, F., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rochester, L.S., Sgrò, C., Siskind, E.J., Smith, P.D., Spandre, G., Spinelli, P., Suson, D.J., Takahashi, H., Tanaka, T., Thayer, J.G., Thayer, J.B., Thompson, D.J., Tibaldo, L., Tosti, G., Troja, E., Usher, T.L., Vandenbroucke, J., Vasileiou, V., Vianello, G., Vilchez, N., Vitale, V., Waite, A.P., Wang, P., Winer, B.L., Wood, K.S., Yang, Z., and Zimmer, S.

Published
2012
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2. The on-orbit calibration of the Fermi Large Area Telescope

Author

Abdo, A.A., Ackermann, M., Ajello, M., Ampe, J., Anderson, B., Atwood, W.B., Axelsson, M., Bagagli, R., Baldini, L., Ballet, J., Barbiellini, G., Bartelt, J., Bastieri, D., Baughman, B.M., Bechtol, K., Bédérède, D., Bellardi, F., Bellazzini, R., Belli, F., Berenji, B., Bisello, D., Bissaldi, E., Bloom, E.D., Bogaert, G., Bogart, J.R., Bonamente, E., Borgland, A.W., Bourgeois, P., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T.H., Busetto, G., Caliandro, G.A., Cameron, R.A., Campell, M., Caraveo, P.A., Carius, S., Carlson, P., Casandjian, J.M., Cavazzuti, E., Ceccanti, M., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C.C., Chiang, J., Chipaux, R., Cillis, A.N., Ciprini, S., Claus, R., Cohen-Tanugi, J., Condamoor, S., Conrad, J., Corbet, R., Cutini, S., Davis, D.S., DeKlotz, M., Dermer, C.D., de Angelis, A., de Palma, F., Digel, S.W., Dizon, P., Dormody, M., do Couto e Silva, E., Drell, P.S., Dubois, R., Dumora, D., Edmonds, Y., Fabiani, D., Farnier, C., Favuzzi, C., Ferrara, E.C., Ferreira, O., Fewtrell, Z., Flath, D.L., Fleury, P., Focke, W.B., Fouts, K., Frailis, M., Freytag, D., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Goodman, J., Grenier, I.A., Grondin, M.-H., Grove, J.E., Guillemot, L., Guiriec, S., Hakimi, M., Haller, G., Hanabata, Y., Hart, P.A., Hascall, P., Hays, E., Huffer, M., Hughes, R.E., Jóhannesson, G., Johnson, A.S., Johnson, R.P., Johnson, T.J., Johnson, W.N., Kamae, T., Katagiri, H., Kataoka, J., Kavelaars, A., Kelly, H., Kerr, M., Klamra, W., Knödlseder, J., Kocian, M.L., Kuehn, F., Kuss, M., Latronico, L., Lavalley, C., Leas, B., Lee, B., Lee, S.-H., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., Lovellette, M.N., Lubrano, P., Lung, D.K., Madejski, G.M., Makeev, A., Marangelli, B., Marchetti, M., Massai, M.M., May, D., Mazzenga, G., Mazziotta, M.N., McEnery, J.E., McGlynn, S., Meurer, C., Michelson, P.F., Minuti, M., Mirizzi, N., Mitra, P., Mitthumsiri, W., Mizuno, T., Moiseev, A.A., Mongelli, M., Monte, C., Monzani, M.E., Moretti, E., Morselli, A., Moskalenko, I.V., Murgia, S., Nelson, D., Nilsson, L., Nishino, S., Nolan, P.L., Nuss, E., Ohno, M., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J.F., Ozaki, M., Paccagnella, A., Paneque, D., Panetta, J.H., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Picozza, P., Pinchera, M., Piron, F., Porter, T.A., Rainò, S., Rando, R., Rapposelli, E., Raynor, W., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Reyes, L.C., Ritz, S., Robinson, S., Rochester, L.S., Rodriguez, A.Y., Romani, R.W., Roth, M., Ryde, F., Sacchetti, A., Sadrozinski, H.F.-W., Saggini, N., Sanchez, D., Sander, A., Sapozhnikov, L., Saxton, O.H., Saz Parkinson, P.M., Sellerholm, A., Sgrò, C., Siskind, E.J., Smith, D.A., Smith, P.D., Spandre, G., Spinelli, P., Starck, J.-L., Stephens, T.E., Strickman, M.S., Strong, A.W., Sugizaki, M., Suson, D.J., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Tenze, A., Thayer, J.B., Thayer, J.G., Thompson, D.J., Tibaldo, L., Tibolla, O., Torres, D.F., Tosti, G., Tramacere, A., Turri, M., Usher, T.L., Vilchez, N., Virmani, N., Vitale, V., Wai, L.L., Waite, A.P., Wang, P., Winer, B.L., Wood, D.L., Wood, K.S., Yasuda, H., Ylinen, T., and Ziegler, M.

Published
2009
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3. Searching the Gamma-ray Sky for Counterparts to Gravitational Wave Sources: Fermi GBM and LAT Observations of LVT151012 and GW151226

Author

RACUSIN, J, BURNS, E, GOLDSTEIN, A., CONNAUGHTON, V., WILSON-HODGE, C.A., JENKE, P., BLACKBURN, L., BRIGGS, M, BROIDA, J, CAMP, J, CHRISTENSEN, N., HUI, C M, LITTENBERG, L, SHAWHAN, P, SINGER, L., VEITCH, J, BHAT, P, CLEVELAND, W., FITZPATRICK, G, GIBBY, M, VON KIENLIN, A, MCBREEN, S, MAILYAN, B., MEEGAN, C.A., PACIESAS, W.S., PREECE, R.D., ROBERTS, O.J., STANBRO, M, VERES, P, ZHANG, B.-B, ACKERMANN, M., ALBERT, A., ATWOOD, William B., AXELSSON, Magnus, BALDINI, L., BALLET, Jean, BARBIELLINI, Guido, BARING, Matthew G., BASTIERI, D., BELLAZZINI, R., BISSALDI, E., BLANDFORD, R.D., BLOOM, E.D., BONINO, R., BREGEON, J., BRUEL, Pascal, BUSON, S., CALIANDRO, G.A., CAMERON, R. A., CAPUTO, R., CARAGIULO, M., CARAVEO, P. A., CAVAZZUTI, E., CHARLES, E., CHIANG, J., CIPRINI, S., COSTANZA, F., CUOCO, A., CUTINI, S., D'AMMANDO, F., DE PALMA, F., DESIANTE, R., DIGEL, S. W., LALLA, N. Di, DI MAURO, M., DI VENERE, L., DRELL, P S., FAVUZZI, C., FERRARA, E.C., FOCKE, W.B., FUKAZAWA, Y., FUNK, S, FUSCO, P., GARGANO, F., GASPARRINI, D., GIGLIETTO, N., GILL, G., GIROLETTI, M., GLANZMANN, T., GRANOT, J., GREEN, D., GROVE, J.E, GUILLEMOT, Lucas, GUIRIEC, S., HARDING, A.K., JOGLER, T., JÓHANNESSON, G., KAMAE, T., KENSEI, S., KOCEVSKI, D., KUSS, M., LARSSON, S., LATRONICO, L., LI, J., LONGO, F., LOPARCO, F., LUBRANO, P., MAGILL, J. D., MALDERA, S., MALYSHEV, D., MCENERY, J. E., MICHELSON, P.F., MIZUNO, T., MORSELLI, A., MOSKALENKO, I. V., NEGRO, M., NUSS, E., OMODEI, N., ORIENTI, M., ORLANDO, E., ORMES, J. F., PANEQUE, D., PERKINS, S., PESCE-ROLLINS, M., PIRON, Frédéric, PIVATO, G., PORTER, T.A., PRINCIPE, G., RAINÒ, S., RANDO, R., RAZZANO, M., RAZZAQUE, S., REIMER, A., REIMER, O., SAZ PARKINSON, P.M., SCARGLE, J.D., SGRÒ, C, SIMONE, D, SISKIND, E. J., SMITH, D, SPADA, F, SPINELLI, P, SUSON, D.J., TAJIMA, H, THAYER, J.B, TORRES, D.F, TROJA, E, UCHIYAMA, Y, VIANELLO, G, WOOD, K.S., WOOD, M., NASA Goddard Space Flight Center (GSFC), GSFC Laboratory for High Energy Astrophysics (LHEA), University of Alabama in Huntsville (UAH), Universities Space Research Association (USRA), NASA Marshall Space Flight Center (MSFC), Massachusetts Institute of Technology (MIT), Center for Space Plasma and Aeronomic Research [Huntsville] (CSPAR), Carleton College, Observatoire Royal de Belgique, Department of Physics and Astronomy [Northfield], University of Maryland [College Park], University of Maryland System, University of Birmingham [Birmingham], University College Dublin [Dublin] (UCD), Jacobs Technology ESCG, Max-Planck-Institut für Extraterrestrische Physik (MPE), University College of Dublin, Deutsches Elektronen-Synchrotron [Hamburg] (DESY), Los Alamos National Laboratory (LANL), Santa Cruz Institute for Particle Physics (SCIPP), University of California [Santa Cruz] (UC Santa Cruz), University of California (UC)-University of California (UC), Royal Institute of Technology [Stockholm] (KTH ), Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), Istituto Nazionale di Fisica Nucleare (INFN), 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), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (INFN, Sezione di Trieste), Department of Physics and Astronomy [Houston], Rice University [Houston], Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare, sezione di Bari (INFN, sezione di Bari), Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), Stanford University, Istituto Nazionale di Fisica Nucleare, Sezione di Torino (INFN, Sezione di Torino), 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), Dipartimento di Fisica 'M. Merlin' dell'Università e del Politecnico di Bari, Politecnico di Bari, Istituto di Astrofisica Spaziale e Fisica Cosmica - Milano (IASF-MI), Istituto Nazionale di Astrofisica (INAF), Agenzia Spaziale Italiana (ASI) Science Data Center, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Istituto di Radioastronomia [Bologna] (IRA), UGC-DAE Consortium for Scientific Research, AUTRES, Unité Scientifique de la Station de Nançay (USN), Observatoire des Sciences de l'Univers en région Centre (OSUC), 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), Hiroshima City University, SLAC National Accelerator Laboratory (SLAC), Open University of Israël, Department of Natural Sciences [Ra'anana}, Naval Research Laboratory (NRL), Friedrich-Alexander-Universität, University of Iceland [Reykjavik], Tokyo University of Science [Tokyo], Institut de Ciencies de l'Espai [Barcelona] (ICE-CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (INFN, Sezione di Perugia), Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata (INFN, Sezione di Roma Tor Vergata), Istituto di Radioastronomia INAF, Department of Physics and Astronomy [Denver], University of Denver, Max-Planck-Institut für Kernphysik (MPIK), Max-Planck-Gesellschaft, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, PPM Group [University of Johannesburg], Department of Geology [University of Johannesburg], University of Johannesburg [South Africa] (UJ)-University of Johannesburg [South Africa] (UJ), Universität Innsbruck [Innsbruck], NASA Ames Research Center (ARC), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), 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), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), NYCB Real-Time Computing Inc., Lattingtown, NYCB Real-Time Computing Inc. [Lattingtown], 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), Purdue University [West Lafayette], Nagoya University, Department of Physics, Rikkyo University [Tokyo], 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), 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), Dipartimento di Fisica M. MerlinUniversitte del Politecnico di Bari, 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 d'Orléans (UO), Dipartimento di Fisica \M. Merlin' dell'Universita e del Politecnico di Bari, Science Institute, University of Iceland, Université Montpellier 2 - Sciences et Techniques (UM2), 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), University of Johannesburg (UJ)-University of Johannesburg (UJ), Leopold-Franzens Universitat Innsbruck, École normale supérieure - Paris (ENS Paris), 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), Purdue University Calumet Department of Chemistry and Physics, National Institute for Nuclear Physics (INFN), Stanford University [Stanford], 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 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), Stanford Linear Accelerator Center (SLAC), Consejo Superior de Investigaciones Científicas [Spain] (CSIC), 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), 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, and PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP)

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), gravitational waves, Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], FOS: Physical sciences, gamma rays: general, methods: observational, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present the Fermi Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) observations of the LIGO binary black hole merger event GW151226 and candi- date LVT151012. No candidate electromagnetic counterparts were detected by either the GBM or LAT. We present a detailed analysis of the GBM and LAT data over a range of timescales from seconds to years, using automated pipelines and new techniques for char- acterizing the upper limits across a large area of the sky. Due to the partial GBM and LAT coverage of the large LIGO localization regions at the trigger times for both events, dif- ferences in source distances and masses, as well as the uncertain degree to which emission from these sources could be beamed, these non-detections cannot be used to constrain the variety of theoretical models recently applied to explain the candidate GBM counterpart to GW150914., 27 pages, 1 table, 11 figures, Submitted to ApJ

Published
2017
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4. Fermi LAT Stacking Analysis of Swift Localized Gamma-ray Bursts

Author

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., Johannesson, 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., Raino, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Schaal, M., Schulz, A., Sgro, 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., Von Kienlin, A., Werner, M., Wood, K.S., Laboratoire Univers et Particules de Montpellier (LUPM), 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), 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) (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, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Département de Physique des Particules (ex SPP) (DPhP)

Subjects
Astrophysics::High Energy Astrophysical Phenomena, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

We perform a comprehensive stacking analysis of data collected by the Fermi Large Area Telescope (LAT) of gamma-ray bursts (GRB) 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 gamma-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 (XRT) 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., Comment: Contact Authors: D. Kocevski, danielkocevski@nasa.gov; J. Chiang, jchiang@slac.stanford.edu; J. Racusin, judith.racusin@nasa.gov; 39 page, 13 figures, 1 Table, Accepted to ApJ

Published
2016
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5. Measurement of the Cosmic Ray e(+)+e(-) Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope

Author

Abdo, A.A., Ackermann, Markus, Ajello, Marco, B. Atwood, W., Axelsson, Magnus, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., Battelino, M., Baughmann, B.M., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E.D., Bogaert, G., Bonamente, E., Borgland, A.W., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, Burnett, T.H., A.Caliandro, G., Cameron, R.A., Caraveo, P. A., Carlson, P., Casandjian, J.M., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C.C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Cominski, L.R., Conrad, J., Cutini, S., D. Dermer, C., De Angelis, A., De Palma, F., Digel, S.W., Di Bernardo, G., Silva, E.D.E., Drell, P.S., Dubois, R., Dumora, D., Edmonds, Y., Farnier, C., Favuzzi, C., Focke, W.B., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., Gaggero, D., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grasso, D., Grenier, I.A., Grondin, M.-H., Grove, J.E., Guillemot, L., Guiriec, S., Hanabata, Y., Harding, A.K., Hartman, R.C., Hayashida, M., Hays, E., Hugues, R.E., Johannesson, G., Johnson, A.S., Johnson, R.P., Johnson, W.N., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Knödlseder, Jürgen, Kocevski, D., Kuehn, F., Kuss, M., Lande, J., Latronico, L., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., Lovellette, M.N., Lubrano, P., Madejski, G. M., Makeev, A., Massai, M.M., 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., Moretti, 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., Ozaki, M., Paneque, D., Panetta, J.H., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Pohl, M., Porter, T.A., Profumo, S., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rochester, L. S., Rodriguez, A. Y., Romani, R.W., Roth, M., Ryde, F., Sadrosinski, H.F-W., Sanchez, D., Sander, A., Saz Parkinson, P.M., Scargle, J. D., Schalk, T. L., Sellerholm, A., Sgro, G., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Starck, Jean-Luc, Stephens, T. E., Strickman, M.S., Strong, A.W., 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., Van Etten, A., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wallace, E., Wang, P., 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), 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, 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)-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), 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 Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-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, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], 96.50.sb, 95.35.+d, 95.85.Ry, 98.70.Sa
Abstract

Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2 m2 sr at 300 GeV. Building on the gamma-ray analysis, we have developed an efficient electron detection strategy which provides sufficient background rejection for measurement of the steeply falling electron spectrum up to 1 TeV. Our high precision data show that the electron spectrum falls with energy as E-3.0 and does not exhibit prominent spectral features. Interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.

Published
2009
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6. Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray AGN

Author

A. ABDO, A., ACKERMANN, Markus, AJELLO, Marco, BALDINI, Luca, BALLET, Jean, BARBIELLINI, Guido, BASTIERI, D., BECHTOL, K., BELLAZZINI, R., BERENJI, B., BLOOM, E.D., BONAMENTE, E., BORGLAND, A.W., BREGEON, J., BREZ, A., BRIGIDA, M., BRUEL, Pascal, 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., DE PALMA, F., DO COUTO E SILVA, E., DRELL, P.S., DUBOIS, R., DUMORA, D., FARNIER, C., FAVUZZI, C., FEGAN, S.J., FOCKE, W.B., FOSCHINI, L., FRAILIS, M., FUKAZAWA, Y., FUSCO, P., GARGANO, F., GEHRELS, N., GERMANI, S., GIEBELS, B., GIGLIETTO, N., GIORDANO, F., GIROLETTI, M., GLANZMAN, T., GODFREY, G., GRENIER, I. A., GROVE, J.E., GUILLEMOT, L., GUIRIEC, S., HAYASHIDA, M., HAYS, E., HORAN, D., HUGUES, R.E., JÓHANNESSON, G., JOHNSON, A. S., JOHNSON, W. N., KADLER, M., KAMAE, T., KATAGIRI, H., KATAOKA, J., KERR, M., KNÖDLSEDER, Jürgen, KUSS, M., LANDE, J., LATRONICO, L., LONGO, F., 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., 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., PELASSA, V., PEPE, M., PERSIC, M., PESCE-ROLLINS, M., PIRON, F., PORTER, T.A., RAINÒ, S., RANDO, R., RAZZANO, M., ROCHESTER, L. S., RODRIGUEZ, A. Y., RYDE, F., SADROZINSKI, H. F.-W., SAMBRUNA, R., SANDER, A., SAZ PARKINSON, P.M., SCARGLE, J. D., SGRÒ, C., SMITH, P. D., SPANDRE, G., SPINELLI, P., STRICKMAN, M.S., SUSON, D.J., TAGLIAFERRI, G., TAKAHASHI, H., TAKAHASHI, T., 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., GHISELLINI, G., MARASCHI, L., TAVECCHIO, F., 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), 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'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, 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), 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 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 Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Cosmology and Nongalactic Astrophysics (astro-ph.CO), quasars: general, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], galaxies: active, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, galaxies: Seyfert, gamma rays: observations, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We report the discovery with Fermi/LAT of gamma-ray emission from three radio-loud narrow-line Seyfert 1 galaxies: PKS 1502+036 (z=0.409), 1H 0323+342 (z=0.061) and PKS 2004-447 (z=0.24). In addition to PMN J0948+0022 (z=0.585), the first source of this type to be detected in gamma rays, they may form an emerging new class of gamma-ray active galactic nuclei (AGN). These findings can have strong implications on our knowledge about relativistic jets and the unified model of AGN., Comment: 16 pages, 1 figure. Accepted for publication on ApJ Letters. Corresponding author: Luigi Foschini

Published
2009
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7. Constraints on cosmological dark matter annihilation from the Fermi-LAT isotropic diffuse gamma-ray measurement

Author

Abdo, A.A, primary, Ackermann, M, additional, Ajello, M, additional, Baldini, L, additional, Ballet, J, additional, Barbiellini, G, additional, Bastieri, D, additional, Bechtol, K, additional, Bellazzini, R, additional, Berenji, B, additional, Blandford, R.D, additional, Bloom, E.D, additional, Bonamente, E, additional, Borgland, A.W, additional, Bouvier, A, additional, Bregeon, J, additional, Brez, A, additional, Brigida, M, additional, Bruel, P, additional, Burnett, T.H, additional, Buson, S, additional, Caliandro, G.A, additional, Cameron, R.A, additional, Caraveo, P.A, additional, Carrigan, S, additional, Casandjian, J.M, additional, Cecchi, C, additional, Çelik, Ö, additional, Chekhtman, A, additional, Cheung, C.C, additional, Chiang, J, additional, Ciprini, S, additional, Claus, R, additional, Cohen-Tanugi, J, additional, Conrad, J, additional, Cutini, S, additional, Dermer, C.D, additional, Angelis, A. de, additional, Palma, F. de, additional, Digel, S.W, additional, Silva, E. do Couto e, additional, Drell, P.S, additional, Dubois, R, additional, Dumora, D, additional, Edmonds, Y, additional, Farnier, C, additional, Favuzzi, C, additional, Fegan, S.J, additional, Focke, W.B, additional, Fortin, P, additional, Frailis, M, additional, Fukazawa, Y, additional, Fusco, P, additional, Gargano, F, additional, Gasparrini, D, additional, Gehrels, N, additional, Germani, S, additional, Giglietto, N, additional, Giordano, F, additional, Glanzman, T, additional, Godfrey, G, additional, Grove, J.E, additional, Guillemot, L, additional, Guiriec, S, additional, Gustafsson, M, additional, Hadasch, D, additional, Harding, A.K, additional, Horan, D, additional, Hughes, R.E, additional, Johnson, A.S, additional, Johnson, W.N, additional, Kamae, T, additional, Katagiri, H, additional, Kataoka, J, additional, Kawai, N, additional, Kerr, M, additional, Knödlseder, J, additional, Kuss, M, additional, Lande, J, additional, Latronico, L, additional, Garde, M. Llena, additional, Longo, F, additional, Loparco, F, additional, Lott, B, additional, Lovellette, M.N, additional, Lubrano, P, additional, Makeev, A, additional, Mazziotta, M.N, additional, McEnery, J.E, additional, Meurer, C, additional, Michelson, P.F, additional, Mitthumsiri, W, additional, Mizuno, T, additional, Monte, C, additional, Monzani, M.E, additional, Morselli, A, additional, Moskalenko, I.V, additional, Murgia, S, additional, Nolan, P.L, additional, Norris, J.P, additional, Nuss, E, additional, Ohsugi, T, additional, Omodei, N, additional, Orlando, E, additional, Ormes, J.F, additional, Paneque, D, additional, Panetta, J.H, additional, Parent, D, additional, Pelassa, V, additional, Pepe, M, additional, Pesce-Rollins, M, additional, Piron, F, additional, Rainò, S, additional, Rando, R, additional, Reimer, A, additional, Reimer, O, additional, Reposeur, T, additional, Rodriguez, A.Y, additional, Roth, M, additional, Sadrozinski, H.F.-W, additional, Sander, A, additional, Parkinson, P.M. Saz, additional, Scargle, J.D, additional, Sellerholm, A, additional, Sgrò, C, additional, Siskind, E.J, additional, Smith, P.D, additional, Spandre, G, additional, Spinelli, P, additional, Starck, J.-L, additional, Strickman, M.S, additional, Suson, D.J, additional, Takahashi, H, additional, Tanaka, T, additional, Thayer, J.B, additional, Thayer, J.G, additional, Torres, D.F, additional, Uchiyama, Y, additional, Usher, T.L, additional, Vasileiou, V, additional, Vilchez, N, additional, Vitale, V, additional, Waite, A.P, additional, Wang, P, additional, Winer, B.L, additional, Wood, K.S, additional, Ylinen, T, additional, Zaharijas, G, additional, and Ziegler, M, additional

Published
2010
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