Stability of the accretion flows with stalled shocks in core-collapse supernovae

T. Yamasaki, S. Yamada

研究成果: Conference contribution

抜粋

With an eye toward application to the theory of core-collapse supernovae, we performed a global linear analysis on the stability of spherically symmetric accretion flows through a standing shock wave onto a proto neutron star. We solved the equations for linear perturbations numerically, and obtained the eigen frequencies and eigen functions. The results show that the non-radial instabilities are induced, probably via the advection-acoustic cycles, for relatively low neutrino luminosities, e.g. ∼2-7×1052ergs/s for M=1.0M/s. For still larger luminosities, more than about 7×1052ergs/s for the same accretion rate, non-oscillatory modes become unstable. These non-radial modes were identified as convection.

元の言語English
ホスト出版物のタイトルSUPERNOVA 1987A
ホスト出版物のサブタイトル20 YEARS AFTER: Supernovae and Gamma-Ray Bursters
ページ344-348
ページ数5
DOI
出版物ステータスPublished - 2007 12 14
イベントSUPERNOVA 1987A: 20 YEARS AFTER: Supernovae and Gamma-Ray Bursters - Aspen, CO, United States
継続期間: 2007 2 192007 2 23

出版物シリーズ

名前AIP Conference Proceedings
937
ISSN(印刷物)0094-243X
ISSN(電子版)1551-7616

Conference

ConferenceSUPERNOVA 1987A: 20 YEARS AFTER: Supernovae and Gamma-Ray Bursters
United States
Aspen, CO
期間07/2/1907/2/23

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • これを引用

    Yamasaki, T., & Yamada, S. (2007). Stability of the accretion flows with stalled shocks in core-collapse supernovae. : SUPERNOVA 1987A: 20 YEARS AFTER: Supernovae and Gamma-Ray Bursters (pp. 344-348). (AIP Conference Proceedings; 巻数 937). https://doi.org/10.1063/1.2803589