Dust Echoes from Gamma-Ray Bursts
- Creators
- Esin, Ann A.
-
Blandford, Roger
Abstract
The deviation from the power-law decline of the optical flux observed in GRB 970228 and GRB 980326 has been used recently to argue in favor of the connection between gamma-ray bursts and supernovae. We consider an alternative explanation for this phenomenon, based on the scattering of a prompt optical burst by 0.1 M☉ dust located beyond its sublimation radius 0.1-1 pc from the burst. In both cases, the optical energy observed at the time of the first detection of the afterglow suffices to produce an echo after ~20-30 days, as observed. Prompt optical monitoring of future bursts and multiband photometry of the afterglows will enable us to test simple models of dust reprocessing quantitatively and to predict source redshift.
Additional Information
© 2000 The American Astronomical Society. Received 2000 February 15; accepted 2000 March 24; published 2000 May 2. We thank J. Bloom for helpful comments. This work was supported by NASA grant 5-2837, NSF grant AST 99-00866, and a Chandra Postdoctoral Fellowship grant (PF8-10002) awarded by the Chandra X-Ray Center, which is operated by the SAO for NASA under contract NAS8-39073.Attached Files
Published - Esin_2000_ApJ_534_L151.pdf
Accepted Version - 0003415.pdf
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Additional details
- Eprint ID
- 96104
- Resolver ID
- CaltechAUTHORS:20190604-101130819
- NASA
- 5-2837
- NSF
- AST 99-00866
- NASA Chandra Postdoctoral Fellowship
- PF8-10002
- NASA
- NAS8-39073
- Created
-
2019-06-04Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Caltech groups
- TAPIR