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Events in the life of a cocoon surrounding a light, collapsar jet
Open accessAbstract
According to the collapsar model, γ-ray bursts are thought to be produced in shocks that occur after the relativistic jet has broken free from the stellar envelope. If the mass density of the collimated outflow is less than that of the stellar envelope, the jet will then be surrounded by a cocoon of relativistic plasma. This material would itself be able to escape along the direction of least resistance, which is likely to be the rotation axis of the stellar progenitor, and to accelerate in approximately the same way as an impulsive fireball. We discuss how the properties of the stellar envelope have a decisive effect on the appearance of a cocoon propagating through it. The relativistic material that accumulated in the cocoon would have enough kinetic energy to substantially alter the structure of the relativistic outflow, if not in fact provide much of the observed explosive power. Shock waves within this plasma can produce γ-ray and X-ray transients, in addition to the standard afterglow emission that would arise from the deceleration shock of the cocoon fireball.
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Citations
Cited by
Goldstein, A., Veres, P., Burns, E., Briggs, M. S., Hamburg, R., Kocevski, D., Wilson-Hodge, C. A., Preece, R. D., Poolakkil, S., Roberts, O. J., et al. (2017) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/aa8f41 · Cited by 1,632
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
“In the collapsar progenitor models, it is expected that the ejecta generally has two components, one ultrarelativistic component powering the GRB, and another moderately relativistic cocoon component (e.g., Zhang. et al. 2004b; Mészáros & Rees 2001; Ramirez-Ruiz et al. 2002).”
MethodGAMMA-RAY BURSTS: PROGRESS, PROBLEMS & PROSPECTS
ZHANG, B., & MÉSZÁROS, P. (2004) · International Journal of Modern Physics A · doi:10.1142/s0217751x0401746x · Cited by 783
Gamma-Ray Bursts in the Swift Era
Gehrels, N., Ramirez-Ruiz, E., & Fox, D. B. (2009) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.46.060407.145147 · Cited by 615
Self-citationBroadband observations of the naked-eye γ-ray burst GRB 080319B
Racusin, J. L., Karpov, S. V., Sokolowski, M., Granot, J., Wu, X. F., Pal’shin, V., Covino, S., van der Horst, A. J., Oates, S. R., Schady, P., et al. (2008) · Nature · doi:10.1038/nature07270 · Cited by 526
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Metadata
- Authors
- Ramirez-Ruiz, E., Celotti, A., & Rees, M. J.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2002-12-21
- Volume
- 337
- Issue
- 4
- Pages
- 1349-1356
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2005113599
- Cited by
- 284
- References
- 0
- FWCI
- 8.89
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Ramirez-Ruiz, E., Celotti, A., & Rees, M. J. (2002). Events in the life of a cocoon surrounding a light, collapsar jet. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1046/j.1365-8711.2002.05995.x
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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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