ANGULAR MOMENTUM FLUCTUATIONS in the CONVECTIVE HELIUM SHELL of MASSIVE STARS

Avishai Gilkis, Noam Soker

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We find significant fluctuations of angular momentum within the convective helium shell of a pre-collapse massive star-a core-collapse supernova progenitor-that may facilitate the formation of accretion disks and jets that can explode the star. The convective flow in our model of an evolved MZAMS = 15 M star, computed using the subsonic hydrodynamic solver MAESTRO, contains entire shells with net angular momentum in different directions. This phenomenon may have important implications for the late evolutionary stages of massive stars and for the dynamics of core collapse.

Original languageEnglish
Article number40
JournalAstrophysical Journal
Volume827
Issue number1
DOIs
StatePublished - 10 Aug 2016
Externally publishedYes

Keywords

  • stars: massive
  • supernovae: general

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