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Multiwaveband analysis of brightest GRB070125

Chandra, Poonam and Cenko, S. Bradley and Frail, Dale A. and Chevalier, Roger A. and Macquart, Jean-Pierre R. and Kulkarni, Shri R. and Bock, Douglas C.-J. and Bertoldi, Frank (2008) Multiwaveband analysis of brightest GRB070125. In: Gamma-Ray Bursts 2007: Proceedings of the Santa Fe Conference, Santa Fe (NM), 5–9 November 2007. AIP Conference Proceedings. No.1000. American Institute of Physics , Melville, NY, pp. 346-349. ISBN 978-0-7354-0533-2.

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We present a comprehensive multiwavelength analysis of the bright, long duration gamma-ray burst GRB 070125, comprised of observations in gamma-ray, X-ray, optical, millimeter and centimeter wavebands. Radio light curves show rapid flux variations, which are interpreted as due to interstellar scintillation, and are used to derive an upper limit of 2.4×10^17 cm on the radius of the fireball. Radio light curves and spectra suggest that the afterglow shock wave is moving in a dense medium. Our broadband modeling favors a constant density profile for the circumburst medium over a wind-like profile (R^−2). GRB 070125 is a burst with high radiative efficiency (>60%).

Item Type:Book Section
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URLURL TypeDescription
Cenko, S. Bradley0000-0003-1673-970X
Macquart, Jean-Pierre R.0000-0001-6763-8234
Kulkarni, Shri R.0000-0001-5390-8563
Bertoldi, Frank0000-0002-1707-1775
Additional Information:©2008 American Institute of Physics. Issue Date: May 22, 2008. PC thanks the VLA staff for making radio observations. We thank Sarah Yost for providing us the GRB broadband modeling code and helping out in running the code. RAC was supported in part by NASA grant NNG06GJ33G.
Funding AgencyGrant Number
Subject Keywords:gamma-ray sources (astronomical), interstellar matter, gamma-rays
Series Name:AIP Conference Proceedings
Issue or Number:1000
Record Number:CaltechAUTHORS:CHAaipcp08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10656
Deposited By: Archive Administrator
Deposited On:29 May 2008
Last Modified:09 Mar 2020 13:18

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