Fermi-LAT observations of the gamma-ray burst GRB 130427A

M. Ackermann; M. Ajello; K. Asano; W. B. Atwood; M. Axelsson; L. Baldini; J. Ballet; G. Barbiellini; M. G. Baring; D. Bastieri; K. Bechtol; R. Bellazzini; E. Bissaldi; E. Bonamente; J. Bregeon; M. Brigida; P. Bruel; R. Buehler; J. Michael Burgess; S. Buson; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; C. Cecchi; V. Chaplin; E. Charles; A. Chekhtman; C. C. Cheung; J. Chiang; G. Chiaro; S. Ciprini; R. Claus; W. Cleveland; J. Cohen-Tanugi; A. Collazzi; L. R. Cominsky; V. Connaughton; J. Conrad; S. Cutini; F. D'Ammando; A. De Angelis; M. DeKlotz; F. De Palma; C. D. Dermer; R. Desiante; A. Diekmann; L. Di 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. Gehrels; S. Germani; M. Gibby; N. Giglietto; M. Giles; 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. Hays; D. Horan; R. E. Hughes; Y. Inoue; T. Jogler; G. Jóhannesson; W. N. Johnson; T. Kawano; J. Knödlseder; D. Kocevski; M. Kuss; J. Lande; S. Larsson; L. Latronico; F. Longo; 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. Nuss; M. Ohno; T. Ohsugi; A. Okumura; N. Omodei; M. Orienti; D. Paneque; V. Pelassa; J. S. Perkins; M. Pesce-Rollins; V. Petrosian; F. Piron; G. Pivato; T. A. Porter; J. L. Racusin; S. Rainò; R. Rando; M. Razzano; S. Razzaque; A. Reimer; O. Reimer; S. Ritz; M. Roth; F. Ryde; A. Sartori; P. M. Saz Parkinson; J. D. Scargle; A. Schulz; C. Sgrò; E. J. Siskind; E. Sonbas; G. Spandre; P. Spinelli; H. Tajima; H. Takahashi; J. G. Thayer; J. B. Thayer; D. J. Thompson; L. Tibaldo; M. Tinivella; D. F. Torres; G. Tosti; E. Troja; T. L. Usher; J. Vandenbroucke; V. Vasileiou; G. Vianello; V. Vitale; B. L. Winer; K. S. Wood; R. Yamazaki; G. Younes; H. F. Yu; S. J. Zhu; P. N. Bhat; M. S. Briggs; D. Byrne; S. Foley; A. Goldstein; P. Jenke; R. M. Kippen; C. Kouveliotou; S. McBreen; C. Meegan; W. S. Paciesas; R. Preece; A. Rau; D. Tierney; A. J. Van Der Horst; A. Von Kienlin; C. Wilson-Hodge; S. Xiong; G. Cusumano; V. La Parola; J. R. Cummings

doi:10.1126/science.1242353

Fermi-LAT observations of the gamma-ray burst GRB 130427A

M. Ackermann
, M. Ajello
, K. Asano
, W. B. Atwood
, M. Axelsson
, L. Baldini
, J. Ballet
, G. Barbiellini
, M. G. Baring
, D. Bastieri
, K. Bechtol
, R. Bellazzini
, E. Bissaldi
, E. Bonamente
, J. Bregeon
, M. Brigida
, P. Bruel
, R. Buehler
, J. Michael Burgess
, S. Buson

G. A. Caliandro, R. A. Cameron, P. A. Caraveo, C. Cecchi, V. Chaplin, E. Charles, A. Chekhtman, C. C. Cheung, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, W. Cleveland, J. Cohen-Tanugi, A. Collazzi, L. R. Cominsky, V. Connaughton, J. Conrad, S. Cutini, F. D'Ammando, A. De Angelis, M. DeKlotz, F. De Palma, C. D. Dermer, R. Desiante, A. Diekmann, L. Di 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. Gehrels, S. Germani, M. Gibby, N. Giglietto, M. Giles, 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. Hays, D. Horan, R. E. Hughes, Y. Inoue, T. Jogler, G. Jóhannesson, W. N. Johnson, T. Kawano, J. Knödlseder, D. Kocevski, M. Kuss, J. Lande, S. Larsson, L. Latronico, F. Longo, 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. Nuss, M. Ohno, T. Ohsugi, A. Okumura, N. Omodei, M. Orienti, D. Paneque, V. Pelassa, J. S. Perkins, M. Pesce-Rollins, V. Petrosian, F. Piron, G. Pivato, T. A. Porter, J. L. Racusin, S. Rainò, R. Rando, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, S. Ritz, M. Roth, F. Ryde, A. Sartori, P. M. Saz Parkinson, J. D. Scargle, A. Schulz, C. Sgrò, E. J. Siskind, E. Sonbas, G. Spandre, P. Spinelli, H. Tajima, H. Takahashi, J. G. Thayer, J. B. Thayer, D. J. Thompson, L. Tibaldo, M. Tinivella, D. F. Torres, G. Tosti, E. Troja, T. L. Usher, J. Vandenbroucke, V. Vasileiou, G. Vianello, V. Vitale, B. L. Winer, K. S. Wood, R. Yamazaki, G. Younes, H. F. Yu, S. J. Zhu, P. N. Bhat, M. S. Briggs, D. Byrne, S. Foley, A. Goldstein, P. Jenke, R. M. Kippen, C. Kouveliotou, S. McBreen, C. Meegan, W. S. Paciesas, R. Preece, A. Rau, D. Tierney, A. J. Van Der Horst, A. Von Kienlin, C. Wilson-Hodge, S. Xiong, G. Cusumano, V. La Parola, J. R. Cummings

Physics

German Electron Synchrotron
University of California at Berkeley
The University of Tokyo
University of California at Santa Cruz
Stockholm University
Oskar Klein Centre
KTH Royal Institute of Technology
University of Pisa
Université Paris Diderot
National Institute for Nuclear Physics
University of Trieste
Rice University
University of Padua
Stanford University
University of Perugia
Polytechnic University of Bari
École polytechnique
University of Alabama in Huntsville
CSIC
Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna
George Mason University
Naval Research Laboratory
Italian Space Agency
Osservatorio Astronomico Roma
Universities Space Research Association
Université Montpellier 2
NASA Postdoctoral Program Fellow
Sonoma State University
Royal Swedish Academy of Sciences
National Institute for Astrophysics
University of Udine
Stellar Solutions Inc.
Jacobs Engineering
NASA Goddard Space Flight Center
University College Dublin
Hiroshima University
Open University of Israel
Max Planck Institute for Extraterrestrial Physics
Kyoto University
Ohio State University
University of Iceland
IRAP
Université Toulouse III - Paul Sabatier
University of Maryland
Nagoya University
Max Planck Institute for Physics (Werner Heisenberg Institute)
University of Maryland Baltimore County
University of Innsbruck
University of Washington
NASA Ames Research Center
NYCB Real-Time Computing Inc.
Adiyaman University
ICREA
Consorzio Interuniversitario per la Fisica Spaziale (CIFS)
University of Rome Tor Vergata
Aoyama Gakuin University
NASA Marshall Space Flight Center
Los Alamos National Laboratory
University of Amsterdam
University of Maryland, Baltimore County

Research output: Contribution to journal › Article › peer-review

275 Citations (Scopus)

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 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.

Original language	English
Pages (from-to)	42-47
Number of pages	6
Journal	Science
Volume	343
Issue number	6166
DOIs	https://doi.org/10.1126/science.1242353
Publication status	Published - 2014

ASJC Scopus subject areas

Multidisciplinary

Access to Document

10.1126/science.1242353

Cite this

Ackermann, M., Ajello, M., Asano, K., Atwood, W. B., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Baring, M. G., Bastieri, D., Bechtol, K., Bellazzini, R., Bissaldi, E., Bonamente, E., Bregeon, J., Brigida, M., Bruel, P., Buehler, R., Burgess, J. M., ... Cummings, J. R. (2014). Fermi-LAT observations of the gamma-ray burst GRB 130427A. Science, 343(6166), 42-47. https://doi.org/10.1126/science.1242353

@article{21089e3f1ed94d2e9a1704a59679a485,

title = "Fermi-LAT observations of the gamma-ray burst GRB 130427A",

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 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.",

author = "M. Ackermann and M. Ajello and K. Asano and Atwood, \{W. B.\} and M. Axelsson and L. Baldini and J. Ballet and G. Barbiellini and Baring, \{M. G.\} and D. Bastieri and K. Bechtol and R. Bellazzini and E. Bissaldi and E. Bonamente and J. Bregeon and M. Brigida and P. Bruel and R. Buehler and Burgess, \{J. Michael\} and S. Buson and Caliandro, \{G. A.\} and Cameron, \{R. A.\} and Caraveo, \{P. A.\} and C. Cecchi and V. Chaplin and E. Charles and A. Chekhtman and Cheung, \{C. C.\} and J. Chiang and G. Chiaro and S. Ciprini and R. Claus and W. Cleveland and J. Cohen-Tanugi and A. Collazzi and Cominsky, \{L. R.\} and V. Connaughton and J. Conrad and S. Cutini and F. D'Ammando and \{De Angelis\}, A. and M. DeKlotz and \{De Palma\}, F. and Dermer, \{C. D.\} and R. Desiante and A. Diekmann and \{Di Venere\}, L. and Drell, \{P. S.\} and A. Drlica-Wagner and C. Favuzzi and Fegan, \{S. J.\} and Ferrara, \{E. C.\} and J. Finke and G. Fitzpatrick and Focke, \{W. B.\} and A. Franckowiak and Y. Fukazawa and S. Funk and P. Fusco and F. Gargano and N. Gehrels and S. Germani and M. Gibby and N. Giglietto and M. Giles and F. Giordano and M. Giroletti and G. Godfrey and J. Granot and Grenier, \{I. A.\} and Grove, \{J. E.\} and D. Gruber and S. Guiriec and D. Hadasch and Y. Hanabata and Harding, \{A. K.\} and M. Hayashida and E. Hays and D. Horan and Hughes, \{R. E.\} and Y. Inoue and T. Jogler and G. J{\'o}hannesson and Johnson, \{W. N.\} and T. Kawano and J. Kn{\"o}dlseder and D. Kocevski and M. Kuss and J. Lande and S. Larsson and L. Latronico and F. Longo and F. Loparco and Lovellette, \{M. N.\} and P. Lubrano and M. Mayer and Mazziotta, \{M. N.\} and McEnery, \{J. E.\} and Michelson, \{P. F.\} and T. Mizuno and Moiseev, \{A. A.\} and Monzani, \{M. E.\} and E. Moretti and A. Morselli and Moskalenko, \{I. V.\} and S. Murgia and R. Nemmen and E. Nuss and M. Ohno and T. Ohsugi and A. Okumura and N. Omodei and M. Orienti and D. Paneque and V. Pelassa and Perkins, \{J. S.\} and M. Pesce-Rollins and V. Petrosian and F. Piron and G. Pivato and Porter, \{T. A.\} and Racusin, \{J. L.\} and S. Rain{\`o} and R. Rando and M. Razzano and S. Razzaque and A. Reimer and O. Reimer and S. Ritz and M. Roth and F. Ryde and A. Sartori and \{Saz Parkinson\}, \{P. M.\} and Scargle, \{J. D.\} and A. Schulz and C. Sgr{\`o} and Siskind, \{E. J.\} and E. Sonbas and G. Spandre and P. Spinelli and H. Tajima and H. Takahashi and Thayer, \{J. G.\} and Thayer, \{J. B.\} and Thompson, \{D. J.\} and L. Tibaldo and M. Tinivella and Torres, \{D. F.\} and G. Tosti and E. Troja and Usher, \{T. L.\} and J. Vandenbroucke and V. Vasileiou and G. Vianello and V. Vitale and Winer, \{B. L.\} and Wood, \{K. S.\} and R. Yamazaki and G. Younes and Yu, \{H. F.\} and Zhu, \{S. J.\} and Bhat, \{P. N.\} and Briggs, \{M. S.\} and D. Byrne and S. Foley and A. Goldstein and P. Jenke and Kippen, \{R. M.\} and C. Kouveliotou and S. McBreen and C. Meegan and Paciesas, \{W. S.\} and R. Preece and A. Rau and D. Tierney and \{Van Der Horst\}, \{A. J.\} and \{Von Kienlin\}, A. and C. Wilson-Hodge and S. Xiong and G. Cusumano and \{La Parola\}, V. and Cummings, \{J. R.\}",

year = "2014",

doi = "10.1126/science.1242353",

language = "English",

volume = "343",

pages = "42--47",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6166",

}

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, D'Ammando, 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, Jóhannesson, G, Johnson, WN, Kawano, T, Knödlseder, 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, Rainò, S, Rando, R, Razzano, M, Razzaque, S, Reimer, A, Reimer, O, Ritz, S, Roth, M, Ryde, F, Sartori, A, Saz Parkinson, PM, Scargle, JD, Schulz, A, Sgrò, 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 2014, 'Fermi-LAT observations of the gamma-ray burst GRB 130427A', Science, vol. 343, no. 6166, pp. 42-47. https://doi.org/10.1126/science.1242353

TY - JOUR

T1 - Fermi-LAT observations of the gamma-ray burst GRB 130427A

AU - Ackermann, M.

AU - Ajello, M.

AU - Asano, K.

AU - Atwood, W. B.

AU - Axelsson, M.

AU - Baldini, L.

AU - Ballet, J.

AU - Barbiellini, G.

AU - Baring, M. G.

AU - Bastieri, D.

AU - Bechtol, K.

AU - Bellazzini, R.

AU - Bissaldi, E.

AU - Bonamente, E.

AU - Bregeon, J.

AU - Brigida, M.

AU - Bruel, P.

AU - Buehler, R.

AU - Burgess, J. Michael

AU - Buson, S.

AU - Caliandro, G. A.

AU - Cameron, R. A.

AU - Caraveo, P. A.

AU - Cecchi, C.

AU - Chaplin, V.

AU - Charles, E.

AU - Chekhtman, A.

AU - Cheung, C. C.

AU - Chiang, J.

AU - Chiaro, G.

AU - Ciprini, S.

AU - Claus, R.

AU - Cleveland, W.

AU - Cohen-Tanugi, J.

AU - Collazzi, A.

AU - Cominsky, L. R.

AU - Connaughton, V.

AU - Conrad, J.

AU - Cutini, S.

AU - D'Ammando, F.

AU - De Angelis, A.

AU - DeKlotz, M.

AU - De Palma, F.

AU - Dermer, C. D.

AU - Desiante, R.

AU - Diekmann, A.

AU - Di Venere, L.

AU - Drell, P. S.

AU - Drlica-Wagner, A.

AU - Favuzzi, C.

AU - Fegan, S. J.

AU - Ferrara, E. C.

AU - Finke, J.

AU - Fitzpatrick, G.

AU - Focke, W. B.

AU - Franckowiak, A.

AU - Fukazawa, Y.

AU - Funk, S.

AU - Fusco, P.

AU - Gargano, F.

AU - Gehrels, N.

AU - Germani, S.

AU - Gibby, M.

AU - Giglietto, N.

AU - Giles, M.

AU - Giordano, F.

AU - Giroletti, M.

AU - Godfrey, G.

AU - Granot, J.

AU - Grenier, I. A.

AU - Grove, J. E.

AU - Gruber, D.

AU - Guiriec, S.

AU - Hadasch, D.

AU - Hanabata, Y.

AU - Harding, A. K.

AU - Hayashida, M.

AU - Hays, E.

AU - Horan, D.

AU - Hughes, R. E.

AU - Inoue, Y.

AU - Jogler, T.

AU - Jóhannesson, G.

AU - Johnson, W. N.

AU - Kawano, T.

AU - Knödlseder, J.

AU - Kocevski, D.

AU - Kuss, M.

AU - Lande, J.

AU - Larsson, S.

AU - Latronico, L.

AU - Longo, F.

AU - Loparco, F.

AU - Lovellette, M. N.

AU - Lubrano, P.

AU - Mayer, M.

AU - Mazziotta, M. N.

AU - McEnery, J. E.

AU - Michelson, P. F.

AU - Mizuno, T.

AU - Moiseev, A. A.

AU - Monzani, M. E.

AU - Moretti, E.

AU - Morselli, A.

AU - Moskalenko, I. V.

AU - Murgia, S.

AU - Nemmen, R.

AU - Nuss, E.

AU - Ohno, M.

AU - Ohsugi, T.

AU - Okumura, A.

AU - Omodei, N.

AU - Orienti, M.

AU - Paneque, D.

AU - Pelassa, V.

AU - Perkins, J. S.

AU - Pesce-Rollins, M.

AU - Petrosian, V.

AU - Piron, F.

AU - Pivato, G.

AU - Porter, T. A.

AU - Racusin, J. L.

AU - Rainò, S.

AU - Rando, R.

AU - Razzano, M.

AU - Razzaque, S.

AU - Reimer, A.

AU - Reimer, O.

AU - Ritz, S.

AU - Roth, M.

AU - Ryde, F.

AU - Sartori, A.

AU - Saz Parkinson, P. M.

AU - Scargle, J. D.

AU - Schulz, A.

AU - Sgrò, C.

AU - Siskind, E. J.

AU - Sonbas, E.

AU - Spandre, G.

AU - Spinelli, P.

AU - Tajima, H.

AU - Takahashi, H.

AU - Thayer, J. G.

AU - Thayer, J. B.

AU - Thompson, D. J.

AU - Tibaldo, L.

AU - Tinivella, M.

AU - Torres, D. F.

AU - Tosti, G.

AU - Troja, E.

AU - Usher, T. L.

AU - Vandenbroucke, J.

AU - Vasileiou, V.

AU - Vianello, G.

AU - Vitale, V.

AU - Winer, B. L.

AU - Wood, K. S.

AU - Yamazaki, R.

AU - Younes, G.

AU - Yu, H. F.

AU - Zhu, S. J.

AU - Bhat, P. N.

AU - Briggs, M. S.

AU - Byrne, D.

AU - Foley, S.

AU - Goldstein, A.

AU - Jenke, P.

AU - Kippen, R. M.

AU - Kouveliotou, C.

AU - McBreen, S.

AU - Meegan, C.

AU - Paciesas, W. S.

AU - Preece, R.

AU - Rau, A.

AU - Tierney, D.

AU - Van Der Horst, A. J.

AU - Von Kienlin, A.

AU - Wilson-Hodge, C.

AU - Xiong, S.

AU - Cusumano, G.

AU - La Parola, V.

AU - Cummings, J. R.

PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84896723186

U2 - 10.1126/science.1242353

DO - 10.1126/science.1242353

M3 - Article

AN - SCOPUS:84896723186

SN - 0036-8075

VL - 343

SP - 42

EP - 47

JO - Science

JF - Science

IS - 6166

ER -

Fermi-LAT observations of the gamma-ray burst GRB 130427A

Abstract

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