Anisotropic neutrino radiation in rotational core collapse

Kei Kotake, Shoichi Yamada, Katsuhiko Sato

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

We have done a series of two-dimensional hydrodynamic simulations of the rotational collapse of a supernova core and estimated the anisotropy of neutrino radiation from nonspherical neutrino spheres. We have employed a realistic equation of state and approximated electron captures and neutrino transport by the so-called leakage scheme. We have calculated heating rates outside the neutrino sphere, assuming that neutrinos are emitted isotropically from each point on the neutrino sphere. We have found that neutrinos heat matter near the rotational axis more strongly than those near the equatorial plane. This might induce a globally anisotropic explosion.

Original languageEnglish
Pages (from-to)304-316
Number of pages13
JournalAstrophysical Journal
Volume595
Issue number1 I
DOIs
Publication statusPublished - 2003 Sep 20

Keywords

  • Methods: numerical
  • Neutrinos
  • Stars: rotation
  • Supernovae: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'Anisotropic neutrino radiation in rotational core collapse'. Together they form a unique fingerprint.

  • Cite this