The First Pulse of the Extremely Bright GRB 130427A: A Test Lab for Synchrotron Shocks
Abstract
Gamma-ray burst (GRB) 130427A is one of the most energetic GRBs ever observed. The initial pulse up to 2.5 s is possibly the brightest well-isolated pulse observed to date. A fine time resolution spectral analysis shows power-law decays of the peak energy from the onset of the pulse, consistent with models of internal synchrotron shock pulses. However, a strongly correlated power-law behavior is observed between the luminosity and the spectral peak energy that is inconsistent with curvature effects arising in the relativistic outflow. It is difficult for any of the existing models to account for all of the observed spectral and temporal behaviors simultaneously.
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Cite
@article{arxiv.1311.5581,
title = {The First Pulse of the Extremely Bright GRB 130427A: A Test Lab for Synchrotron Shocks},
author = {R. Preece and J. Michael Burgess and A. von Kienlin and P. N. Bhat and M. S. Briggs and D. Byrne and V. Chaplin and W. Cleveland and A. C. Collazzi and V. Connaughton and A. Diekmann and G. Fitzpatrick and S. Foley and M. Gibby and M. Giles and A. Goldstein and J. Greiner and D. Gruber and P. Jenke and R. M. Kippen and C. Kouveliotou and S. McBreen and C. Meegan and W. S. Paciesas and V. Pelassa and D. Tierney and A. J. van der Horst and C. Wilson-Hodge and S. Xiong and G. Younes and H. -F. Yu and M. Ackermann and M. Ajello and M. Axelsson and L. Baldini and G. Barbiellini and M. G. Baring and D. Bastieri and R. Bellazzini and E. Bissaldi and E. Bonamente and J. Bregeon and M. Brigida and P. Bruel and R. Buehler and S. Buson and G. A. Caliandro and R. A. Cameron and P. A. Caraveo and C. Cecchi and E. Charles and A. Chekhtman and J. Chiang and G. Chiaro and S. Ciprini and R. Claus and J. Cohen-Tanugi and L. R. Cominsky and J. Conrad and F. D'Ammando and A. de Angelis and F. de Palma and C. D. Dermer and R. Desiante and S. W. Digel and L. Di Venere and P. S. Drell and A. Drlica-Wagner and C. Favuzzi and A. Franckowiak and Y. Fukazawa and P. Fusco and F. Gargano and N. Gehrels and S. Germani and N. Giglietto and F. Giordano and M. Giroletti and G. Godfrey and J. Granot and I. A. Grenier and S. Guiriec and D. Hadasch and Y. Hanabata and A. K. Harding and M. Hayashida and S. Iyyani and T. Jogler and G. Jóannesson and T. Kawano and J. Knödlseder and D. Kocevski and M. Kuss and J. Lande and J. Larsson and S. Larsson and L. Latronico and F. Longo and F. Loparco and M. N. Lovellette and P. Lubrano and M. Mayer and M. N. Mazziotta and P. F. Michelson and T. Mizuno and M. E. Monzani and E. Moretti and A. Morselli and S. Murgia and R. Nemmen and E. Nuss and T. Nymark and M. Ohno and T. Ohsugi and A. Okumura and N. Omodei and M. Orienti and D. Paneque and J. S. Perkins and M. Pesce-Rollins and F. Piron and G. Pivato and T. A. Porter and J. L. Racusin and S. Rainò 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 J. D. Scargle and A. Schulz and C. Sgrò and E. J. Siskind and G. Spandre and P. Spinelli and D. J. Suson and H. Tajima and H. Takahashi and J. G. Thayer and J. B. Thayer and L. Tibaldo and M. Tinivella and D. F. Torres and G. Tosti and E. Troja and T. L. Usher and J. Vandenbroucke and V. Vasileiou and G. Vianello and V. Vitale and M. Werner and B. L. Winer and K. S. Wood and S. Zhu},
journal= {arXiv preprint arXiv:1311.5581},
year = {2013}
}
Comments
This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published online in Science Express on 21 November 2013 [DOI:10.1126/science.1242302] 15 pages, 4 figures and 1 table; includes supplementary online materials