Esin, Ann A. and Blandford, Roger (2000) Dust Echoes from Gamma-Ray Bursts. Astrophysical Journal, 534 (2). L151-L154. ISSN 0004-637X. doi:10.1086/312670. https://resolver.caltech.edu/CaltechAUTHORS:20190604-101130819
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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.
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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. | ||||||||||
Group: | TAPIR | ||||||||||
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Subject Keywords: | dust, extinction—gamma rays: bursts | ||||||||||
Issue or Number: | 2 | ||||||||||
DOI: | 10.1086/312670 | ||||||||||
Record Number: | CaltechAUTHORS:20190604-101130819 | ||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190604-101130819 | ||||||||||
Official Citation: | Ann A. Esin and Roger Blandford 2000 ApJ 534 L151 | ||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||
ID Code: | 96104 | ||||||||||
Collection: | CaltechAUTHORS | ||||||||||
Deposited By: | Tony Diaz | ||||||||||
Deposited On: | 04 Jun 2019 18:07 | ||||||||||
Last Modified: | 16 Nov 2021 17:18 |
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