Axisymmetric magnetohydrodynamic simulations of the collapsar model for gamma-ray bursts

  title={Axisymmetric magnetohydrodynamic simulations of the collapsar model for gamma-ray bursts},
  author={D. Proga and Andrew MacFadyen and Philip J. Armitage and Mitchell C. Begelman Jila and University of Colorado and Boulder and Co and California Institute of Technology. and Pasadena and Ca and also Department of Astrophysical and Planetary Sciences},
  journal={The Astrophysical Journal},
We present results from axisymmetric, time-dependent magnetohydrodynamic (MHD) simulations of the collapsar model for gamma-ray bursts. We begin the simulations after the 1.7 M? iron core of a 25 M? presupernova star has collapsed and study the ensuing accretion of the 7 M? helium envelope onto the central black hole formed by the collapsed iron core. We consider a spherically symmetric progenitor model but with spherical symmetry broken by the introduction of a small, latitude-dependent… Expand

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  • D. Proga
  • Physics, Medicine
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2007
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