Authors
M Ackermann, Marco Ajello, K Asano, WB Atwood, Magnus Axelsson, Luca Baldini, J Ballet, G Barbiellini, MG Baring, Dea Bastieri, K Bechtol, R Bellazzini, Elisabetta Bissaldi, Emanuele Bonamente, J Bregeon, M Brigida, P Bruel, R Buehler, J Michael Burgess, Sara Buson, GA Caliandro, RA Cameron, PA Caraveo, Claudia Cecchi, V Chaplin, E Charles, A Chekhtman, CC Cheung, J Chiang, Graziano Chiaro, S Ciprini, R Claus, W Cleveland, J Cohen-Tanugi, A Collazzi, LR Cominsky, V Connaughton, Jan Conrad, S Cutini, Filippo D’Ammando, Alessandro de Angelis, M DeKlotz, F De Palma, CD Dermer, Rachele Desiante, A Diekmann, L Di Venere, PS Drell, A Drlica-Wagner, C Favuzzi, SJ Fegan, EC Ferrara, J Finke, G Fitzpatrick, WB Focke, A Franckowiak, Y Fukazawa, S Funk, Piergiorgio Fusco, F Gargano, N Gehrels, S Germani, M Gibby, N Giglietto, M Giles, Francesco Giordano, M Giroletti, G Godfrey, J Granot, IA Grenier, JE Grove, D Gruber, S Guiriec, D Hadasch, Y Hanabata, AK Harding, M Hayashida, E Hays, D Horan, RE Hughes, Y Inoue, T Jogler, G Jóhannesson, WN Johnson, T Kawano, J Knödlseder, D Kocevski, M Kuss, J Lande, Stefan Larsson, L Latronico, Francesco Longo, Francesco Loparco, MN Lovellette, P Lubrano, M Mayer, MN Mazziotta, JE McEnery, PF Michelson, T Mizuno, AA Moiseev, ME Monzani, Elena Moretti, A Morselli, IV Moskalenko, S Murgia, R Nemmen, E Nuss, M Ohno, T Ohsugi, A Okumura, N Omodei, M Orienti, D Paneque, V Pelassa, JS Perkins, M Pesce-Rollins, V Petrosian, F Piron, Giovanna Pivato, TA Porter, JL Racusin, Silvia Raino, Riccardo Rando, Massimiliano Razzano, S Razzaque, A Reimer, O Reimer, S Ritz, M Roth, Felix Ryde, A Sartori, PM Saz Parkinson, JD Scargle, A Schulz, C Sgrò, EJ Siskind, E Sonbas, G Spandre, Paolo Spinelli, H Tajima, H Takahashi, JG Thayer, JB Thayer, DJ Thompson, L Tibaldo, Marco Tinivella, DF Torres, Gino Tosti, E Troja
Publication date
2014/1/3
Journal
Science
Volume
343
Issue
6166
Pages
42-47
Publisher
American Association for the Advancement of Science
Description
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 these unique astrophysical sources. GRB 130427A had the largest fluence, highest-energy photon (95 GeV), longest γ-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 nonthermal high-energy emission in the afterglow phase of GRBs is synchrotron emission radiated by electrons accelerated at an external shock.
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