Proga, Daniel and MacFadyen, Andrew I. and Armitage, Philip J. and Begelman, Mitchell C. (2004) MHD Simulations of the Collapsar Model for GRBs. In: Gamma-Ray Bursts: 30 Years of Discovery. AIP Conference Proceedings (727). American Institute of Physics , Melville, NY, pp. 384-387. ISBN 0735402086 http://resolver.caltech.edu/CaltechAUTHORS:20110831-085153766
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Abstract
We present results from axisymmetric, time-dependent magnetohydrodynamic (MHD) simulations of the collapsar model for gamma-ray bursts. Our main conclusion is that, within the collapsar model,MHD effects alone are able to launch, accelerate and sustain a strong polar outflow. We also find that the outflow is Poynting flux-dominated, and note that this provides favorable initial conditions for the subsequent production of a baryon-poor fireball.
| Item Type: | Book Section | ||||||||||
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| Additional Information: | © 2004 American Institute of Physics. Issue Date: 28 September 2004. DP acknowledges support from NASA under LTSA grants NAG5-11736 and NAG5-12867. MCB acknowledges support from NSF grants AST-9876887 and AST-0307502. | ||||||||||
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| Subject Keywords: | gamma-ray sources (astronomical), black holes, magnetohydrodynamics, numerical analysis | ||||||||||
| Classification Code: | PACS: 98.70.Rz; 97.60.Lf; 95.30.Qd | ||||||||||
| Record Number: | CaltechAUTHORS:20110831-085153766 | ||||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20110831-085153766 | ||||||||||
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| Official Citation: | MHD Simulations of the Collapsar Model for GRBs Daniel Proga, Andrew I. MacFadyen, Philip J. Armitage, and Mitchell C. Begelman, AIP Conf. Proc. 727, 384 (2004), DOI:10.1063/1.1810870 | ||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||
| ID Code: | 25178 | ||||||||||
| Collection: | CaltechAUTHORS | ||||||||||
| Deposited By: | Tony Diaz | ||||||||||
| Deposited On: | 31 Aug 2011 21:03 | ||||||||||
| Last Modified: | 26 Dec 2012 13:38 |
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