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 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 nonthermal high-energy emission in the afterglow phase of GRBs is synchrotron emission radiated by electrons accelerated at an external shock.
Fermi-LAT Observations of the Gamma-Ray Burst GRB 130427A / 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. - In: SCIENCE. - ISSN 0036-8075. - STAMPA. - 343:6166(2014), pp. 42-47. [10.1126/science.1242353]
Fermi-LAT Observations of the Gamma-Ray Burst GRB 130427A
D'AMMANDO, FILIPPO;
2014
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 these 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 nonthermal high-energy emission in the afterglow phase of GRBs is synchrotron emission radiated by electrons accelerated at an external shock.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
