MHD simulations of the collapsar model for GRBs

Details MHD simulations of the collapsar model for GRBs MHD simulations of the collapsar model for GRBs

2003-12-11

arxiv.org/abs/astro-ph/0312319v1

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in proceedings of "2003 GRB Conference" (Santa Fe, NM, September 8-12, 2003), needs aipprocs LaTeX class, m

Scientific paper

10.1063/1.1810870

We present results from axisymmetric, time-dependent magnetohydrodynamic (MHD) simulations of the collapsar model for gamma-ray bursts. Our main conclusion is that, within the collapsar model, MHD effects alone are able to launch, accelerate and sustain a strong polar outflow. We also find that the outflow is Poynting flux-dominated, and note that this provides favorable initial conditions for the subsequent production of a baryon-poor fireball.

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