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VERY HIGH EFFICIENCY PHOTOSPHERIC EMISSION IN LONG-DURATION γ-RAY BURSTS
Open accessAbstract
We numerically analyze the evolution of a long-duration gamma-ray burst jet as it leaves the progenitor star and propagates to the photospheric radius, where radiation can be released. We find that the interaction of the relativistic material with the progenitor star has influences well beyond the stellar surface. Tangential collimation shocks are observed throughout the jet evolution, out to about 100 stellar radii, which is the whole range of our simulation. We find that the jet is internally hot at the photospheric radius and we compute the photospheric emission. The photosphere is a very efficient radiator, capable of converting more than half of the total energy of the jet into radiation. We show that bright photospheres are a common feature of jets born inside massive progenitor stars and that this effect can explain the high radiative efficiency observed in long-duration bursts.
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Citations
Cited by
The 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
THE PROPAGATION OF RELATIVISTIC JETS IN EXTERNAL MEDIA
Bromberg, O., Nakar, E., Piran, T., & Sari, R. (2011) · The Astrophysical Journal · doi:10.1088/0004-637x/740/2/100 · Cited by 361
Numerically calibrated model for propagation of a relativistic unmagnetized jet in dense media
Harrison, R., Gottlieb, O., & Nakar, E. (2018) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sty760 · Cited by 89
Metadata
- Authors
- Lazzati, D., Morsony, B. J., & Begelman, M. C.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2009-07-02
- Volume
- 700
- Issue
- 1
- Pages
- L47-L50
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1981395751
- Cited by
- 168
- References
- 0
- FWCI
- 6.85
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: VERY HIGH EFFICIENCY PHOTOSPHERIC EMISSION IN LONG-DURATION γ-RAY BURSTS. https://app.cochat.ai/papers/10.1088/0004-637x/700/1/l47
- The paper
- Lazzati, D., Morsony, B. J., & Begelman, M. C. (2009). VERY HIGH EFFICIENCY PHOTOSPHERIC EMISSION IN LONG-DURATION γ-RAY BURSTS. The Astrophysical Journal. https://doi.org/10.1088/0004-637x/700/1/l47
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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
