Neutrino-dominated accretion and supernovae

Kazunori Kohri*, Ramesh Narayan, Tsvi Piran

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

187 Scopus citations

Abstract

We suggest that part of the infalling material during the core collapse of a massive star goes into orbit around the compact core to form a hot, dense, centrifugally supported accretion disk whose evolution is strongly influenced by neutrino interactions. Under a wide range of conditions, this neutrino-dominated accretion flow will be advection dominated and will develop a substantial outflowing wind. We estimate the energy carried out in the wind and find that it exceeds 1050 ergs for a wide range of parameters and even exceeds 1051 ergs for reasonable parameter choices. We propose that the wind energy will revive a stalled shock and will help produce a successful supernova explosion. We discuss the role of the disk wind in both prompt and delayed explosions. While both scenarios are feasible, we suggest that a delayed explosion is more likely and perhaps even unavoidable. Finally, we suggest that the disk wind may be a natural site for r-process nucleosynthesis.

Original languageEnglish
Pages (from-to)341-361
Number of pages21
JournalAstrophysical Journal
Volume629
Issue number1 I
DOIs
StatePublished - 10 Aug 2005

Keywords

  • Accretion, accretion disks
  • Black hole physics
  • Neutrinos
  • Supernovae: general

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