GRB 130427A: A Nearby Ordinary Monster

Author:

Maselli A.1,Melandri A.2,Nava L.23,Mundell C. G.4,Kawai N.56,Campana S.2,Covino S.2,Cummings J. R.7,Cusumano G.1,Evans P. A.8,Ghirlanda G.2,Ghisellini G.2,Guidorzi C.9,Kobayashi S.4,Kuin P.10,La Parola V.1,Mangano V.111,Oates S.10,Sakamoto T.12,Serino M.6,Virgili F.4,Zhang B.-B.11,Barthelmy S.13,Beardmore A.8,Bernardini M. G.2,Bersier D.4,Burrows D.11,Calderone G.214,Capalbi M.1,Chiang J.15,D’Avanzo P.2,D’Elia V.1617,De Pasquale M.10,Fugazza D.2,Gehrels N.13,Gomboc A.1819,Harrison R.4,Hanayama H.20,Japelj J.18,Kennea J.11,Kopac D.18,Kouveliotou C.21,Kuroda D.22,Levan A.23,Malesani D.24,Marshall F.13,Nousek J.11,O’Brien P.8,Osborne J. P.8,Pagani C.8,Page K. L.8,Page M.10,Perri M.1617,Pritchard T.11,Romano P.1,Saito Y.5,Sbarufatti B.211,Salvaterra R.25,Steele I.4,Tanvir N.8,Vianello G.15,Wiegand B.13,Wiersema K.8,Yatsu Y.5,Yoshii T.5,Tagliaferri G.2

Affiliation:

1. Istituto Nazionale di Astrofisica (INAF)–Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF) Palermo, Via Ugo La Malfa 153 I-90146 Palermo, Italy.

2. INAF–Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate, Italy.

3. AstroParticule 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, France.

4. Astrophysics Research Institute, Liverpool John Moores University, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK.

5. Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan.

6. Coordinated Space Observation and Experiment Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.

7. University of Maryland, Baltimore County/Center for Research and Exploration in Space Science & Technology/NASA Goddard Space Flight Center, Code 661, Greenbelt, MD 20771, USA.

8. Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK.

9. Department of Physics, University of Ferrara, via Saragat 1, I-44122, Ferrara, Italy.

10. Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK.

11. Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA.

12. Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan.

13. NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.

14. Dipartimento di Fisica “G. Occhialini,” Università di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy.

15. W. 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, USA.

16. INAF/Rome Astronomical Observatory, via Frascati 33, 00040 Monteporzio Catone (Roma), Italy.

17. Agenzia Spaziale Italiana (ASI) Science Data Centre, Via Galileo Galilei, 00044 Frascati (Roma), Italy.

18. Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19 1000, Ljubljana, Slovenia.

19. Centre of Excellence Space-si, Askerceva cesta 12, 1000 Ljubljana, Slovenia.

20. Ishigakijima Astronomical Observatory, National Astronomical Observatory of Japan, 1024-1 Arakawa, Ishigaki, Okinawa 907-0024, Japan.

21. Space Science Office, VP62, NASA/Marshall Space Flight Center, Huntsville, AL 35812, USA.

22. Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, 3037-5 Honjo, Kamogata, Asaguchi, Okayama 719-0232.

23. Department of Physics, University of Warwick, Coventry CV4 7AL, UK.

24. Dark Cosmology Centre (DARK), Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, Denmark.

25. INAF-IASF Milano, via E. Bassini 15, I-20133 Milano, Italy.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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