Fermi Observations of GRB 090510: A Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 keV to GeV Energies

Markus Ackermann; K. Asano; W. B. Atwood; Magnus Axelsson; Luca Baldini; Jean Ballet; Guido Barbiellini; M. G. Baring; D. Bastieri; K. Bechtol; R. Bellazzini; B. Berenji; P. N. Bhat; E. Bissaldi; R. D. Blandford; E. D. Bloom; E. Bonamente; A. W. Borgland; A. Bouvier; J. Bregeon; A. Brez; M. S. Briggs; M. Brigida; Pascal Bruel; S. Buson; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; S. Carrigan; J. M. Casandjian; C. Cecchi; O. Celik; E. Charles; J. Chiang; S. Ciprini; R. Claus; J. Cohen-Tanugi; V. Connaughton; J. Conrad; C. D. Dermer; F. de Palma; B. L. Dingus; E. Do Couto E Silva; P. S. Drell; R. Dubois; D. Dumora; C. Farnier; C. Favuzzi; S. J. Fegan; J. Finke; W. B. Focke; M. Frailis; Y. Fukazawa; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; S. Germani; N. Giglietto; F. Giordano; T. Glanzman; G. Godfrey; J. Granot; I. A. Grenier; M.-H. Grondin; J. E. Grove; S. Guiriec; D. Hadasch; A. K. Harding; E. Hays; D. Horan; R. E. Hughes; G. Johannesson; W. N. Johnson; T. Kamae; H. Katagiri; J. Kataoka; N. Kawai; R. M. Kippen; Jürgen Knödlseder; D. Kocevski; C. Kouveliotou; M. Kuss; J. Lande; L. Latronico; M. Lemoine-Goumard; M. Llena Garde; F. Longo; F. Loparco; B. Lott; M. N. Lovellette; P. Lubrano; A. Makeev; M. N. Mazziotta; J. E. Mcenery; S. Mcglynn; C. Meegan; P. Meszaros; P. F. Michelson; W. Mitthumsiri; T. Mizuno; A. A. Moiseev; C. Monte; M. E. Monzani; E. Moretti; A. Morselli; I. V. Moskalenko; S. Murgia; H. Nakajima; T. Nakamori; P. L. Nolan; J. P. Norris; E. Nuss; M. Ohno; T. Ohsugi; N. Omodei; E. Orlando; J. F. Ormes; M. Ozaki; W. S. Paciesas; D. Paneque; J. H. Panetta; D. Parent; V. Pelassa; M. Pepe; M. Pesce-Rollins; F. Piron; R. Preece; S. Raino; R. Rando; M. Razzano; S. Razzaque; A. Reimer; S. Ritz; A. Y. Rodriguez; M. Roth; F. Ryde; H. F.-W. Sadrozinski; A. Sander; J. D. Scargle; T. L. Schalk; C. Sgro; E. J. Siskind; P. D. Smith; G. Spandre; P. Spinelli; M. Stamatikos; F. W. Stecker; M. S. Strickman; D. J. Suson; H. Tajima; H. Takahashi; T. Takahashi; T. Tanaka; J. B. Thayer; J. G. Thayer; D. J. Thompson; L. Tibaldo; K. Toma; D. F. Torres; G. Tosti; A. Tramacere; Y. Uchiyama; T. Uehara; T. L. Usher; A. J. van Der Horst; V. Vasileiou; N. Vilchez; V. Vitale; A. von Kienlin; A. P. Waite; P. Wang; C. Wilson-Hodge; B. L. Winer; X. F. Wu; R. Yamazaki; Z. Yang; T. Ylinen; M. Ziegler

doi:10.1088/0004-637X/716/2/1178

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Fermi Observations of GRB 090510: A Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 keV to GeV Energies

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Fermi Observations of GRB 090510: A Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 keV to GeV Energies

Markus Ackermann, K. Asano, W. B. Atwood, Magnus Axelsson, Luca Baldini, Jean Ballet, Guido Barbiellini, M. G. Baring, D. Bastieri, K. Bechtol, …

The Astrophysical Journal, Vol.716, pp.1178-1190

20/06/2010

DOI: https://doi.org/10.1088/0004-637X/716/2/1178

Abstract

gamma-ray burst: individual (GRB 090510)

radiation mechanisms: non-thermal

We present detailed observations of the bright short-hard gamma-ray burst GRB 090510 made with the Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) on board the Fermi observatory. GRB 090510 is the first burst detected by the LAT that shows strong evidence for a deviation from a Band spectral fitting function during the prompt emission phase. The time-integrated spectrum is fit by the sum of a Band function with $\Epeak = 3.9\pm 0.3$\,MeV, which is the highest yet measured, and a hard power-law component with photon index $-1.62\pm 0.03$ that dominates the emission below $\approx$\,20\,keV and above $\approx$\,100\,MeV. The onset of the high-energy spectral component appears to be delayed by $\sim$\,0.1\,s with respect to the onset of a component well fit with a single Band function. A faint GBM pulse and a LAT photon are detected 0.5\,s before the main pulse. During the prompt phase, the LAT detected a photon with energy $30.5^{+5.8}_{-2.6}$ GeV, the highest ever measured from a short GRB. Observation of this photon sets a minimum bulk outflow Lorentz factor, $\Gamma\ga$\,1200, using simple $\gamma\gamma$ opacity arguments for this GRB at redshift $z = 0.903$ and a variability time scale on the order of tens of ms for the $\approx$\,100\,keV--few MeV flux. Stricter high confidence estimates imply $\Gamma \ga 1000$ and still require that the outflows powering short GRBs are at least as highly relativistic as those of long duration GRBs. Implications of the temporal behavior and power-law shape of the additional component on synchrotron/synchrotron self-Compton (SSC), external-shock synchrotron, and hadronic models are considered.

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Title: Fermi Observations of GRB 090510: A Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 keV to GeV Energies
Creators - without role: Markus Ackermann - SLAC National Accelerator Laboratory
K. Asano - Tokyo Institute of Technology
W. B. Atwood
Magnus Axelsson - Fraunhofer Chalmers Research Centre for Industrial Mathematics
Luca Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Jean Ballet - Astrophysique, Instrumentation et Modélisation
Guido Barbiellini - University of Trieste
M. G. Baring
D. Bastieri - University of Padua
K. Bechtol - Kavli Institute for Particle Astrophysics and Cosmology
R. Bellazzini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
B. Berenji - Stanford University
P. N. Bhat
E. Bissaldi - Max Planck Institute for Extraterrestrial Physics
R. D. Blandford
E. D. Bloom
E. Bonamente - University of Perugia
A. W. Borgland
A. Bouvier - Kavli Institute for Particle Astrophysics and Cosmology
J. Bregeon - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Brez - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. S. Briggs
M. Brigida - Polytechnic University of Bari
Pascal Bruel - École Polytechnique
S. Buson - INFN Sezione di Padova
G. A. Caliandro
R. A. Cameron
P. A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
S. Carrigan - University of Padua
J. M. Casandjian - Astrophysique Interprétation Modélisation
C. Cecchi - University of Perugia
O. Celik - Goddard Space Flight Center
E. Charles - Kavli Institute for Particle Astrophysics and Cosmology
J. Chiang - Kavli Institute for Particle Astrophysics and Cosmology
S. Ciprini - University of Perugia
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
J. Cohen-Tanugi - Université de Montpellier
V. Connaughton - University of Alabama in Huntsville
J. Conrad
C. D. Dermer
F. de Palma - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
B. L. Dingus
E. Do Couto E Silva
P. S. Drell
R. Dubois - Kavli Institute for Particle Astrophysics and Cosmology
D. Dumora - Laboratoire de Physique des deux infinis Bordeaux
C. Farnier - Laboratoire de Physique Théorique
C. Favuzzi - Polytechnic University of Bari
S. J. Fegan - Laboratoire Leprince-Ringuet
J. Finke - National Academy of Sciences
W. B. Focke
M. Frailis - Trieste Astronomical Observatory
Y. Fukazawa - Hiroshima University
P. Fusco - Polytechnic University of Bari
F. Gargano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
D. Gasparrini - Agenzia Spaziale Italiana
N. Gehrels - Goddard Space Flight Center
S. Germani - University of Perugia
N. Giglietto - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
F. Giordano - Polytechnic University of Bari
T. Glanzman - Stanford University
G. Godfrey - Kavli Institute for Particle Astrophysics and Cosmology
J. Granot - University of Hertfordshire
I. A. Grenier - Astrophysique Interprétation Modélisation
M.-H. Grondin - Laboratoire de Physique des deux infinis Bordeaux
J. E. Grove
S. Guiriec - University of Alabama in Huntsville
D. Hadasch - Institució Catalana de Recerca i Estudis Avançats
A. K. Harding
E. Hays - Goddard Space Flight Center
D. Horan - Laboratoire Leprince-Ringuet
R. E. Hughes
G. Johannesson - Kavli Institute for Particle Astrophysics and Cosmology
W. N. Johnson
T. Kamae - Kavli Institute for Particle Astrophysics and Cosmology
H. Katagiri - Hiroshima University
J. Kataoka - Waseda University
N. Kawai - RIKEN
R. M. Kippen
Jürgen Knödlseder - Centre National d'Études Spatiales
D. Kocevski - Stanford University
C. Kouveliotou - Marshall Space Flight Center
M. Kuss - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
J. Lande - Kavli Institute for Particle Astrophysics and Cosmology
L. Latronico - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Lemoine-Goumard - Laboratoire de Physique des deux infinis Bordeaux
M. Llena Garde
F. Longo - University of Trieste
F. Loparco - Polytechnic University of Bari
B. Lott - Institut National de Physique Nucléaire et de Physique des Particules
M. N. Lovellette
P. Lubrano - University of Perugia
A. Makeev - United States Naval Research Laboratory
M. N. Mazziotta
J. E. Mcenery
S. Mcglynn - KTH Royal Institute of Technology
C. Meegan - Universities Space Research Association
P. Meszaros - Pennsylvania State University
P. F. Michelson
W. Mitthumsiri - Kavli Institute for Particle Astrophysics and Cosmology
T. Mizuno - Hiroshima University
A. A. Moiseev
C. Monte - Polytechnic University of Bari
M. E. Monzani
E. Moretti - University of Trieste
A. Morselli - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
I. V. Moskalenko
S. Murgia - Kavli Institute for Particle Astrophysics and Cosmology
H. Nakajima - Tokyo Institute of Technology
T. Nakamori - Tokyo Institute of Technology
P. L. Nolan
J. P. Norris
E. Nuss - Laboratoire de Physique Théorique
M. Ohno - Institute of Space and Astronautical Science
T. Ohsugi - Hiroshima University
N. Omodei - Kavli Institute for Particle Astrophysics and Cosmology
E. Orlando - Max Planck Institute for Extraterrestrial Physics
J. F. Ormes
M. Ozaki - Institute of Space and Astronautical Science
W. S. Paciesas
D. Paneque - Kavli Institute for Particle Astrophysics and Cosmology
J. H. Panetta
D. Parent - United States Naval Research Laboratory
V. Pelassa - Institut National de Physique Nucléaire et de Physique des Particules
M. Pepe - University of Perugia
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Piron - Laboratoire de Physique Théorique
R. Preece - University of Alabama in Huntsville
S. Raino - Polytechnic University of Bari
R. Rando - University of Padua
M. Razzano - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
S. Razzaque - United States Naval Research Laboratory
A. Reimer - Universität Innsbruck
S. Ritz - University of California, Santa Cruz
A. Y. Rodriguez
M. Roth - University of Washington
F. Ryde - Fraunhofer Chalmers Research Centre for Industrial Mathematics
H. F.-W. Sadrozinski
A. Sander - The Ohio State University
J. D. Scargle - Astrophysique Interprétation Modélisation
T. L. Schalk
C. Sgro - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E. J. Siskind
P. D. Smith
G. Spandre - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
P. Spinelli - Polytechnic University of Bari
M. Stamatikos - Goddard Space Flight Center
F. W. Stecker
M. S. Strickman
D. J. Suson
H. Tajima - Kavli Institute for Particle Astrophysics and Cosmology
H. Takahashi - Hiroshima University
T. Takahashi
T. Tanaka - Kavli Institute for Particle Astrophysics and Cosmology
J. B. Thayer
J. G. Thayer
D. J. Thompson
L. Tibaldo - Astrophysique Interprétation Modélisation
K. Toma - Pennsylvania State University
D. F. Torres
G. Tosti - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
A. Tramacere - Swiss Data Science Center
Y. Uchiyama - Kavli Institute for Particle Astrophysics and Cosmology
T. Uehara
T. L. Usher
A. J. van Der Horst
V. Vasileiou - Goddard Space Flight Center
N. Vilchez - Université Toulouse III - Paul Sabatier
V. Vitale - University of Rome Tor Vergata
A. von Kienlin - Max Planck Institute for Extraterrestrial Physics
A. P. Waite
P. Wang - Stanford University
C. Wilson-Hodge - Marshall Space Flight Center
B. L. Winer
X. F. Wu
R. Yamazaki - Hiroshima University
Z. Yang - AlbaNova
T. Ylinen - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. Ziegler - University of California, Santa Cruz
Publication Details: The Astrophysical Journal, Vol.716, pp.1178-1190
Identifiers: 9935568709311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00497160