Relativistic Jets from Collapsars

Miguel A. Aloy; Ewald Mueller; Jose M. Ibanez; Jose M. Marti; Andrew MacFadyen

Relativistic Jets from Collapsars

Astrophysics 2007-05-23 v1

Authors: Miguel A. Aloy , Ewald Mueller , Jose M. Ibanez , Jose M. Marti , Andrew MacFadyen

Abstract

We have studied the relativistic beamed outflow proposed to occur in the collapsar model of gamma-ray bursts. A jet forms as a consequence of an assumed energy deposition of $\sim 10^{50}- 10^{51}$ erg/s within a $30^{\circ}$ cone around the rotation axis of the progenitor star. The generated jet flow is strongly beamed ( $\la$ few degrees) and reaches the surface of the stellar progenitor (r $\approx 3 10^{10}$ cm) intact. At break-out the maximum Lorentz factor of the jet flow is about 33. Simulations have been performed with the GENESIS multi-dimensional relativistic hydrodynamic code.

Keywords

relativistic jets astrophysical jets

Cite

@article{arxiv.astro-ph/9910466,
  title  = {Relativistic Jets from Collapsars},
  author = {Miguel A. Aloy and Ewald Mueller and Jose M. Ibanez and Jose M. Marti and Andrew MacFadyen},
  journal= {arXiv preprint arXiv:astro-ph/9910466},
  year   = {2007}
}

Comments

6 pages, 2 figures, to appear in the proceedings of the conference "Godunov methods: theory and applications", Oxford, October 1999

Relativistic Jets from Collapsars

Abstract

Keywords

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