Relativistic Outflows in Gamma-Ray Bursts

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dc.creatorAloy, M. A.
dc.creatorObergaulinger, M.
dc.date2007-01-08
dc.date.accessioned2026-07-07T07:38:56Z
dc.date.available2026-07-07T07:38:56Z
dc.descriptionThe possibility that gamma-ray bursts (GRBs) were not isotropic emissions was devised theoretically as a way to ameliorate the huge energetic budget implied by the standard fireball model for these powerful phenomena. However, the mechanism by which after the quasy-isotropic release of a few $10^{50} $erg yields a collimated ejection of plasma could not be satisfactory explained analytically. The reason being that the collimation of an outflow by its progenitor system depends on a very complex and non-linear dynamics. That has made necessary the use of numerical simulations in order to shed some light on the viability of some likely progenitors of GRBs. In this contribution I will review the most relevant features shown by these numerical simulations and how they have been used to validate the collapsar model (for long GRBs) and the model involving the merger of compact binaries (for short GRBs).
dc.description8 pages, 1 figure. Proceedings of the conference: "Circumstellar Media and Late Stages of Massive Stellar Evolution". Ensenada (Mexico). To be published by Revista Mexicana de Astronomia y Astrofisica
dc.identifierhttps://arxiv.org/abs/astro-ph/0701187
dc.identifierhttp://arxiv.org/abs/astro-ph/0701187
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/121277
dc.subjectAstrophysics
dc.titleRelativistic Outflows in Gamma-Ray Bursts
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