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Efficient acceleration and radiation in Poynting flux powered GRB outflows
Open accessAbstract
We investigate the effects of magnetic energy release by local magnetic dissipation processes in Poynting flux-powered GRBs. For typical GRB parameters (energy and baryon loading) the dissipation takes place mainly outside the photosphere, producing non-thermal radiation. This process converts the total burst energy into prompt radiation at an efficiency of 10–50%. At the same time the dissipation has the effect of accelerating the flow to a large Lorentz factor. For higher baryon loading, the dissipation takes place mostly inside the photosphere, the efficiency of conversion of magnetic energy into radiation is lower, and an X-ray flash results instead of a GRB. We demonstrate these effects with numerical one-dimensional steady relativistic MHD calculations.
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Cited by
The Supernova–Gamma-Ray Burst Connection
Woosley, S. E., & Bloom, J. S. (2006) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.43.072103.150558 · Cited by 1,766
Zhang, B., Fan, Y. Z., Dyks, J., Kobayashi, S., Meszaros, P., Burrows, D. N., Nousek, J. A., & Gehrels, N. (2006) · The Astrophysical Journal · doi:10.1086/500723 · Cited by 1,079
“…comes from the internal shocks due to the collisions among many engineejected shells (Rees &Mészáros 1994; Paczynski & Xu 1994) or is due to magnetic or other dissipation processes at a radius smaller than the fireball deceleration radius (e.g., Drenkhahn & Spruit 2002; Rees & Mészáros 2005).”
BackgroundThe physics of gamma-ray bursts & relativistic jets
Kumar, P., & Zhang, B. (2015) · Physics Reports · doi:10.1016/j.physrep.2014.09.008 · Cited by 952
GAMMA-RAY BURSTS: PROGRESS, PROBLEMS & PROSPECTS
ZHANG, B., & MÉSZÁROS, P. (2004) · International Journal of Modern Physics A · doi:10.1142/s0217751x0401746x · Cited by 783
McKinney, J. C. (2006) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2006.10256.x · Cited by 599
Metadata
- Authors
- Drenkhahn, G., & Spruit, H. C.
- Venue
- Astronomy & Astrophysics
- Publisher
- EDP Sciences
- Published
- 2002-08-09
- Volume
- 391
- Issue
- 3
- Pages
- 1141-1153
- ISSN
- 0004-6361 (ISSN-L)
- 1432-0746
- OpenAlex
- W2110178167
- Cited by
- 433
- References
- 0
- FWCI
- 7.19
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Drenkhahn, G., & Spruit, H. C. (2002). Efficient acceleration and radiation in Poynting flux powered GRB outflows. Astronomy & Astrophysics. https://doi.org/10.1051/0004-6361%3A20020839
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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