INDIAN INSTITUTE OF ASTROPHYSICS
DIGITAL REPOSITORY
Prints

Indian Institute of Astrophysics  >
IIAP Publications >
IIAP Publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/5932

Title: Comprehensive multiwavelength modelling of the afterglow of GRB 050525A
Authors: Resmi, L
Misra, K
Johannesson, G
Castro-Tirado, A. J
Gorosabel, J
Jelınek, M
Bhattacharya, D
Kubanek, P
Anupama, G. C
Sota, A
Sahu, D. K
de Ugarte Postigo, A
Pandey, S. B
Sanchez-Ramırez, R
Bremer, M
Sagar, R
Keywords: Techniques
Photometric – gamma-ray burst
Individual
GRB 050525A
Issue Date: Nov-2012
Publisher: Wiley-Blackwell
Citation: Monthly Notices of the Royal Astronomical Society, Vol. 427, No 1, pp. 288–297
Abstract: The Swift era has posed a challenge to the standard blast-wave model of gamma-ray burst (GRB) afterglows. The key observational features expected within the model are rarely observed, such as the achromatic steepening (‘jet break’) of light curves. The observed afterglow light curves showcase additional complex features requiring modifications within the standard model. Here we present optical/near-infrared observations, millimetre upper limits and comprehensive broad-band modelling of the afterglow of the bright GRB 0505025A, detected by Swift. This afterglow cannot be explained by the simplistic form of the standard blast-wave model. We attempt modelling multiwavelength light curves using (i) a forward–reverse shock model, (ii) a two-component outflow model and (iii) a blast-wave model with a wind termination shock. The forward–reverse shock model cannot explain the evolution of the afterglow. The two-component model is able to explain the average behaviour of the afterglow very well but cannot reproduce the fluctuations in the early X-ray light curve. The wind termination shock model reproduces the early light curves well but deviates from the global behaviour of the late-time afterglow.
Description: Restricted Access
URI: http://hdl.handle.net/2248/5932
ISSN: 0035-8711
Alternative Location: http://dx.doi.org/10.1111/j.1365-2966.2012.21713.x
http://arxiv.org/abs/1207.3003
Copyright: © Wiley-Blackwell
Appears in Collections:IIAP Publications
Publications based on data from IAO, Hanle

Files in This Item:

File Description SizeFormat
Comprehensive multiwavelength modelling of the afterglow of GRB050525A.pdfRestricted Access1.48 MBAdobe PDFView/Open

Items in IIAP Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2007 MIT and Hewlett-Packard - Feedback