THREE-DIMENSIONAL BOLTZMANN HYDRO CODE FOR CORE COLLAPSE IN MASSIVE STARS. I. SPECIAL RELATIVISTIC TREATMENTS

• 長倉, 洋樹

• Sumiyoshi, Kohsuke

• Yamada, Shoichi

抄録

We propose a novel numerical method for solving multi-dimensional, special relativistic Boltzmann equations for neutrinos coupled with hydrodynamics equations. This method is meant to be applied to simulations of core-collapse supernovae. We handle special relativity in a non-conventional way, taking account of all orders of v/c. Consistent treatment of the advection and collision terms in the Boltzmann equations has been a challenge, which we overcome by employing two different energy grids: Lagrangian remapped and laboratory fixed grids. We conduct a series of basic tests and perform a one-dimensional simulation of core-collapse, bounce, and shock-stall for a 15 M ☉ progenitor model with a minimum but essential set of microphysics. We demonstrate in the latter simulation that our new code is capable of handling all phases in core-collapse supernova. For comparison, a non-relativistic simulation is also conducted with the same code, and we show that they produce qualitatively wrong results in neutrino transfer. Finally, we discuss a possible incorporation of general relativistic effects into our method.

収録刊行物

• The Astrophysical Journal Supplement Series

  The Astrophysical Journal Supplement Series 214 (2), 2014-10-01

  American Astronomical Society

キーワード

• hydrodynamics
• neutrinos
• supernovae: general

詳細情報

• CRID: 1050001335797018240
• NII論文ID: 120005511073
• NII書誌ID: AA00553297
• ISSN: 00670049
• HANDLE: 2433/191192
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles