GRB 130427A: A Nearby Ordinary Monster
A. MaselliIstituto Nazionale di Astrofisica (INAF)–Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) Palermo, Via Ugo La Malfa 153 I-90146 Palermo, ItalyA. MelandriINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, ItalyLara NavaAstroParticule et Cosmologie, Université Paris Diderot, CNRS/IN2P3, Commissariat à l'Energie Atomique et aux Energies Alternatives/Institut de Recherches sur les lois Fondamentales de l’Univers, Observatoire de Paris, Sorbonne Paris Cité, FranceC. G. MundellAstrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UKN. KawaiCoordinated Space Observation and Experiment Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, JapanS. CampanaINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, ItalyS. CovinoINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, ItalyJ. R. CummingsUniversity of Maryland, Baltimore County/Center for Research and Exploration in Space Science & Technology/NASA Goddard Space Flight Center, Code 661, Greenbelt, MD 20771, USAG. CusumanoIstituto Nazionale di Astrofisica (INAF)–Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) Palermo, Via Ugo La Malfa 153 I-90146 Palermo, ItalyN. GehrelsDepartment of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKG. GhirlandaINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, ItalyG. GhiselliniINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, ItalyC. GuidorziDepartment of Physics, University of Ferrara, via Saragat 1, I-44122, Ferrara, ItalyS. KobayashiAstrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UKN. P. M. KuinMullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UKV. La ParolaIstituto Nazionale di Astrofisica (INAF)–Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) Palermo, Via Ugo La Malfa 153 I-90146 Palermo, ItalyV. ManganoDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USAS. R. OatesMullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UKT. SakamotoDepartment of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, JapanM. SerinoCoordinated Space Observation and Experiment Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, JapanFabio VirgiliAstrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UKBin‐Bin ZhangDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USAA. P. BeardmoreNASA Goddard Space Flight Center, Greenbelt, MD 20771, USAM. G. BernardiniINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, ItalyD. BersierAstrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UKD. N. BurrowsDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USAGiorgio CalderoneDipartimento di Fisica “G. Occhialini,” Università di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, ItalyM. CapalbiIstituto Nazionale di Astrofisica (INAF)–Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) Palermo, Via Ugo La Malfa 153 I-90146 Palermo, ItalyJ. ChiangW. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics, and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305, USAP. D’AvanzoINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, ItalyV. D’EliaAgenzia Spaziale Italiana (ASI) Science Data Centre, Via Galileo Galilei, 00044 Frascati (Roma), ItalyM. de PasqualeMullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UKD. FugazzaINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, ItalyN. GehrelsNASA Goddard Space Flight Center, Greenbelt, MD 20771, USAA. GombocCentre of Excellence Space-si, Askerceva cesta 12, 1000 Ljubljana, SloveniaR. A. HarrisonAstrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UKH. HanayamaIshigakijima Astronomical Observatory, National Astronomical Observatory of Japan, 1024-1 Arakawa, Ishigaki, Okinawa 907-0024, JapanJ. JapeljFaculty of Mathematics and Physics, University of Ljubljana, Jadranska 19 1000, Ljubljana, SloveniaJ. A. KenneaDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USAD. KopačFaculty of Mathematics and Physics, University of Ljubljana, Jadranska 19 1000, Ljubljana, SloveniaC. KouveliotouSpace Science Office, VP62, NASA/Marshall Space Flight Center, Huntsville, AL 35812, USAD. KurodaOkayama Astrophysical Observatory, National Astronomical Observatory of Japan, 3037-5 Honjo, Kamogata, Asaguchi, Okayama 719-0232A. J. LevanDepartment of Physics, University of Warwick, Coventry CV4 7AL, UKD. MalesaniDark Cosmology Centre (DARK), Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, DenmarkF. E. MarshallNASA Goddard Space Flight Center, Greenbelt, MD 20771, USAJ. A. NousekDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USAP. T. O’BrienDepartment of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKJ. P. OsborneDepartment of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKC. PaganiDepartment of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKK. L. PageDepartment of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKM. J. PageMullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UKM. PerriAgenzia Spaziale Italiana (ASI) Science Data Centre, Via Galileo Galilei, 00044 Frascati (Roma), ItalyT. A. PritchardDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USAP. RomanoIstituto Nazionale di Astrofisica (INAF)–Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) Palermo, Via Ugo La Malfa 153 I-90146 Palermo, ItalyY. SaitoDepartment of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, JapanB. SbarufattiDepartment of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USAR. SalvaterraINAF-IASF Milano, via E. Bassini 15, I-20133 Milano, ItalyI. A. SteeleAstrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UKN. R. TanvirDepartment of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKG. VianelloW. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics, and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305, USAB. WiegandNASA Goddard Space Flight Center, Greenbelt, MD 20771, USAK. WiersemaDepartment of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKYoichi YatsuDepartment of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, JapanT. YoshiiDepartment of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, JapanG. TagliaferriINAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, Italy
2013en
ABI
Abstract
Bright Lights Gamma-ray bursts (GRBs), bright flashes of gamma-ray light, are thought to be associated with the collapse of massive stars. GRB 130427A was detected on 27 April 2013, and it had the longest gamma-ray duration and one of the largest isotropic energy releases observed to date (see the Perspective by Fynbo ). Ackermann et al. (p. 42 , published online 21 November) report data obtained with the Fermi Gamma-Ray Space Telescope, which reveal a high-energy spectral component that cannot be accounted for by the standard external shock synchrotron radiation model. Vestrand et al. (p. 38 , published online 21 November) report the detection of an extremely bright flash of visible light and unexpected similarities between the variations of optical light and the highest-energy gamma rays that indicate a common origin. A detailed analysis of the first pulse of GRB 130427A by Preece et al. (p. 51 , published online 21 November) suggests that existing models cannot explain all the observed spectral and temporal behaviors simultaneously. Maselli et al. (p. 48 , published online 21 November) present x-ray and optical light curves of the burst's prompt emission as well as of its afterglow as recorded by the Swift satellite and a range of ground-based telescopes.
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