Multiwaveband analysis of brightest GRB070125

Chandra, P.; Cenko, S.; Frail, D.; Chevalier, R.; Macquart, Jean-Pierre; Kulkarni, S.; Bock, D.; Bertoldi, F.

doi:10.1063/1.2943480

Access Status

Fulltext not available

Authors

Chandra, P.

Cenko, S.

Frail, D.

Chevalier, R.

Macquart, Jean-Pierre

Kulkarni, S.

Bock, D.

Bertoldi, F.

Date

2008

Type

Conference Paper

Metadata

Show full item record

Citation

Chandra, P. and Cenko, S. and Frail, D. and Chevalier, R. and Macquart, J. and Kulkarni, S. and Bock, D. et al. 2008. Multiwaveband analysis of brightest GRB070125, pp. 346-349.

Source Title

AIP Conference Proceedings

DOI

10.1063/1.2943480

ISBN

9780735405332

School

Curtin Institute of Radio Astronomy (Physics)

URI

http://hdl.handle.net/20.500.11937/8966

Collection

Curtin Research Publications

Abstract

We present a comprehensive multiwavelength analysis of the bright, long duration gamma-ray burst GRB 070125, comprised of observations in ?-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 17cm 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%). © 2008 American Institute of Physics.