6th Huntsville symposium : Huntsville, Alabama, 20-23 October 2008
ISBN
9780735406704
Series
AIP Conference Proceedings
Event
6th Huntsville Symposium on Gamma-Ray Bursts, Huntsville, AL, USA
Pages (from-to)
238-240
Publisher
Melville, NY: American Institute of Physics
Organisations
Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract
Present radio, mm and optical afterglow data along with that published in the literature has been used to study the nature of this brightest explosion. The numerical fit to the multi-wavelength data constraints the values of the physical parameters and the emission mechanism of the burst. It has been found that the observed decay nature of the afterglow fits equally good with both the ISM and WIND density profiles of the circum-burst. Using the results from our analysis we derive the value of blast-wave size to be ~10(18) cm and the value of the Lorentz factor to be ~300.