GRB 030227: The first multiwavelength afterglow of an INTEGRAL GRB

dc.contributor.author	Castro-Tirado, A. J., ... et al. (including Sagar, R. & Pandey, S. B. and Mohan, V.
dc.date.accessioned	2009-11-24T06:29:32Z
dc.date.available	2009-11-24T06:29:32Z
dc.date.issued	2003
dc.identifier.uri	http://hdl.handle.net/123456789/353
dc.description.abstract	We present multiwavelength observations of a gamma-ray burst detected by INTEGRAL (GRB 030227) between 5.3 hours and ~1.7 days after the event. Here we report the discovery of a dim optical afterglow (OA) that would not have been detected by many previous searches due to its faintess (R ~ 23). This OA was seen to decline following a power law decay with index αR = −0.95 ± 0.16. The spectral index βopt/NIR yielded −1.25 ± 0.14. These values may be explained by a relativistic expansion of a fireball (with p = 2.0) in the cooling regime. We also find evidence for inverse Compton scattering in X-rays.	en_US
dc.language.iso	en	en_US
dc.relation.ispartofseries	aa411-L315
dc.subject	Gamma Rays Bursts, Photometric – cosmology	en_US
dc.title	GRB 030227: The first multiwavelength afterglow of an INTEGRAL GRB	en_US
dc.type	Article	en_US