Taylor, Greg and Frail, Dale and Berger, Edo and Kulkarni, Shri (2004) High Resolution Observations of GRB 030329. In: Gamma-ray bursts: 30 years of discovery. AIP Conference Proceedings (727). American Institute of Physics , Melville, NY, pp. 324-327. ISBN 0-7354-0208-6 http://resolver.caltech.edu/CaltechAUTHORS:20110822-143801650
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The nearby (z=0.1685) gamma-ray burst of 29 March 2003 has presented us with a unique opportunity to study an event with unprecedented physical resolution. This burst reached flux density levels at centimeter wavelengths more than 50 times brighter than any previously studied event. Here we present the results of VLBI observations that have resolved the radio afterglow, and constrain its proper motion in the sky to <0.3 mas. The size of the afterglow is measured to be ~0.08 mas 24 days after the burst, consistent with expectations of the standard fireball model. In observations taken 51 days after the burst we detect an additional compact, "jet", component at a distance from the main component of 0.28 ± 0.05 mas. The presence of this jet component is not consistent with the standard model.
|Item Type:||Book Section|
|Additional Information:||© 2004 American Institute of Physics. Issue Date: 28 September 2004. We are particularly greatful to the schedulers of the VLBA, GBT, Effelsberg, WSRT, and Arecibo telescopes for heroic efforts on behalf of this program.|
|Subject Keywords:||gamma-ray sources (astronomical), afterglows, radiosources (astronomical), astrophysical jets|
|Classification Code:||PACS: 98.70.Rz; 98.70.Dk; 07.87.+v|
|Official Citation:||High Resolution Observations of GRB 030329 Greg Taylor, Dale Frail, Edo Berger, and Shri Kulkarni, AIP Conf. Proc. 727, 324 (2004), DOI:10.1063/1.1810857|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||22 Aug 2011 23:38|
|Last Modified:||26 Dec 2012 13:30|
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