High Resolution Observations of GRB 030329
- Creators
- Taylor, Greg
- Frail, Dale
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Berger, Edo
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Kulkarni, Shri
- Others:
- Fenimore, Edward E.
- Galassi, Mark
Abstract
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.
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.Attached Files
Published - TAYaipcp04.pdf
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Additional details
- Eprint ID
- 24985
- Resolver ID
- CaltechAUTHORS:20110822-143801650
- Created
-
2011-08-22Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences (GPS)
- Series Name
- AIP Conference Proceedings
- Series Volume or Issue Number
- 727