Collapsars: Gamma-ray bursts and explosions in 'failed supernovae'

  title={Collapsars: Gamma-ray bursts and explosions in 'failed supernovae'},
  author={Andrew MacFadyen and S. E. Woosley},
  journal={The Astrophysical Journal},
Using a two-dimensional hydrodynamics code (PROMETHEUS), we explore the continued evolution of rotating helium stars, Mα 10 M☉, in which iron-core collapse does not produce a successful outgoing shock but instead forms a black hole of 2-3 M☉. The model explored in greatest detail is the 14 M☉ helium core of a 35 M☉ main-sequence star. The outcome is sensitive to the angular momentum. For j16 ≡ j/(1016 cm2 s-1) 3, material falls into the black hole almost uninhibited. No outflows are expected… Expand
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