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GRB 030329: Three years of radio afterglow monitoring

Van der Horst, AJ and Kamble, A and Wijer, RAMJ and Resmi, L and Bhattacharya, D and Rol, E and Strom, R and Kouveliotou, C and Oosterloo, T and Ishwara-Chandra, CH (2006) GRB 030329: Three years of radio afterglow monitoring. In: Philosophical Transaction Mathemetical Physical and Engineering Sciences, 121 (12). pp. 1241-1246.

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Radio observations of Gamma-Ray Burst (GRB) afterglows are essential for our understanding of the physics of relativistic blast waves, as they enable us to follow the evolution of GRB explosions much longer than the afterglows in any other wave band. We have performed a three-year monitoring campaign of GRB030329 with the Westerbork Synthesis Radio Telescopes (WSRT) and the Giant Metrewave Radio Telescope (GMRT). Our observations, combined with observations at other wavelengths, have allowed its to determine the GR13 blast wave physical parameters, such as the total burst energy and the ambient medium density, as well as investigate the jet nature of the relativistic outflow. Further, by modeling the late-time radio light curve of GRB 030329, we predict that the Low Frequency Array (LOFAR, 30-240 MHz) will be able to observe afterglows of similar GRBs, and constrain the physics of the blast wave during its non-relativistic phase.

Item Type: Journal Article
Publication: Philosophical Transaction Mathemetical Physical and Engineering Sciences
Publisher: The Royal Society
Additional Information: Copyright of this article belongs to The Royal Society.
Keywords: gamma-ray bursts;radio afterglows;afterglow modelling.
Department/Centre: Division of Physical & Mathematical Sciences > Joint Astronomy Programme
Date Deposited: 24 Mar 2009 10:34
Last Modified: 19 Sep 2010 05:25
URI: http://eprints.iisc.ac.in/id/eprint/18716

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