Vlahakis, N. (2005) Magnetic fireball: The acceleration efficiency of hydromagnetic outflows in GRB sources. Il nuovo cimento C, 28 (3). pp. 393-398. ISSN 1826-9885
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Abstract
Gamma-ray bursts (GRBs) have been inferred to arise in highly collimated, ultrarelativistic jets that emanate from the vicinity of a solar-mass compact object. Electromagnetic stresses are the most plausible candidate for extracting rotational energy at the source and converting it into outflow kinetic energy. Two questions that need to be answered in order for this process to be well understood are: what determines the terminal Lorentz factor of the flow? What is the asymptotic value of the Poynting-to-matter energy flux ratio? We discuss the general characteristics of the relativistic magnetohydrodynamic (MHD) solutions that, together with previously obtained exact results, help to shed light on these questions.
| Item Type: | Article |
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| Additional Information: | Paper presented at the “4th Workshop on Gamma-Ray Burst in the Afterglow Era”, Rome, October 18-22, 2004. |
| Uncontrolled Keywords: | Magnetohydrodynamics and plasmas ; Jets, outflows and bipolarflo ws ; γ-ray sources; γ-ray bursts |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 16 Mar 2020 10:26 |
| Last Modified: | 16 Mar 2020 10:26 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/15654 |
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