Mészáros, P. (2000) Photospheres, Comptonization and X-ray lines in gamma-ray bursts. In: Gamma-Ray Bursts: 5th Huntsville Symposium. AIP Conference Proceedings. No.526. American Institute of Physics , Melville, NY, pp. 514-518. ISBN 1-56396-947-5. https://resolver.caltech.edu/CaltechAUTHORS:20111129-153851270
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Abstract
Steep X-ray spectral slopes, X-ray excesses and preferred spectral energy breaks in the 0.1–0.3 MeV range are discussed as the possible consequences of the photospheric component of the GRB relativistic outflow, and of pair breakdown in internal shocks leading to Comptonization on semi-relativistic electrons or MHD waves. We also discuss the X-ray and UV spectra of GRB afterglows occurring in a dense environment characteristic of massive stellar progenitors, including their ability to produce detectable Fe or other metallic line features.
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| Additional Information: | © 2000 American Institute of Physics. Issue Date: 8 September 2000. I am grateful to M.J. Rees, C. Weth and T. Kallman for stimulating collaborations, NASA NAG-5 2857, the Guggenheim Foundation and the Division of Physics, Math & Astronomy, the Astronomy Visitor and the Merle Kingsley funds at Caltech for support. | ||||||||||
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| Subject Keywords: | gamma-ray sources (astronomical); photosphere; stellar atmospheres; stellar winds; astrophysical jets; plasma shock waves; red shift; gamma-ray scattering; X-ray spectroscopy | ||||||||||
| Series Name: | AIP Conference Proceedings | ||||||||||
| Issue or Number: | 526 | ||||||||||
| Classification Code: | PACS: 97.10.Ex; 98.70.Rz; 98.62.Nx | ||||||||||
| DOI: | 10.1063/1.1361591 | ||||||||||
| Record Number: | CaltechAUTHORS:20111129-153851270 | ||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20111129-153851270 | ||||||||||
| Official Citation: | Photospheres, Comptonization and X-ray lines in gamma-ray bursts P. Meszaros, AIP Conf. Proc. 526, 514 (2000), DOI:10.1063/1.1361591 | ||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||
| ID Code: | 28234 | ||||||||||
| Collection: | CaltechAUTHORS | ||||||||||
| Deposited By: | INVALID USER | ||||||||||
| Deposited On: | 30 Nov 2011 19:04 | ||||||||||
| Last Modified: | 09 Nov 2021 16:55 |
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