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arXiv:astro-ph/0309637 (astro-ph)
[Submitted on 23 Sep 2003]

Title:The Surroundings of Gamma-Ray Bursts: Constraints on Progenitors

Authors:Roger A. Chevalier
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Abstract: The association of a supernova with a gamma-ray burst (GRB 030329) implies a massive star progenitor, which is expected to have an environment formed by pre-burst stellar winds. Although some sources are consistent with the expected wind environment, many are not, being better fit by a uniform density environment. One possibility is that this is a shocked wind, close to the burst because of a high interstellar pressure and a low mass loss density. Alternatively, there is more than one kind of burst progenitor, some of which interact directly with the interstellar medium. Another proposed environment is a pulsar wind bubble that has expanded inside a supernova, which requires that the supernova precede the burst.
Comments: 10 pages, review, IAU Colloq. 192, Apr. 22-26, 2003, Supernovae: 10 Years of 1993J, eds. J.M. Marcaide, K.W. Weiler, Springer Verlag
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0309637
  (or arXiv:astro-ph/0309637v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0309637

Submission history

From: Roger A. Chevalier [view email]
[v1] Tue, 23 Sep 2003 18:26:30 UTC (29 KB)
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