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0067-0049_214_2_16.pdf | 1.89 MB | Adobe PDF | 見る/開く |
タイトル: | THREE-DIMENSIONAL BOLTZMANN HYDRO CODE FOR CORE COLLAPSE IN MASSIVE STARS. I. SPECIAL RELATIVISTIC TREATMENTS |
著者: | Nagakura, Hiroki Sumiyoshi, Kohsuke Yamada, Shoichi |
著者名の別形: | 長倉, 洋樹 |
キーワード: | hydrodynamics neutrinos supernovae: general |
発行日: | 1-Oct-2014 |
出版者: | American Astronomical Society |
誌名: | The Astrophysical Journal Supplement Series |
巻: | 214 |
号: | 2 |
論文番号: | 16 |
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. |
著作権等: | © 2014. The American Astronomical Society. |
URI: | http://hdl.handle.net/2433/191192 |
DOI(出版社版): | 10.1088/0067-0049/214/2/16 |
出現コレクション: | 学術雑誌掲載論文等 |
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