Numerical simulations of two-dimensional and three-dimensional accretion flows

Takuya Matsuda, Takanori Ishii, Nobuhiro Sekino, Keisuke Sawada, Eiji Shima, Mario Livio, Ulrich Anzer

研究成果: Article査読

36 被引用数 (Scopus)

抄録

Numerical simulations of 2D and 3D accretion flows past a gravitating compact object from a uniform flow at a large distance upstream are performed by solving the Eulerian equations. We find that 2D flows exhibit a 'flip-flop instability' if the central accreting body is small. If the central body is enlarged at some instance in the oscillating flow, then the accretion shock shows a rather periodic oscillation similar to the von Karman vortex street. In the case of 3D flows, it is found that the shock cone is much more robust than in 2D, and the flip-flop instability takes a different, probably less violent form. The causes for the instabilities are discussed.

本文言語English
ページ(範囲)183-191
ページ数9
ジャーナルMonthly Notices of the Royal Astronomical Society
255
2
DOI
出版ステータスPublished - 1992

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 宇宙惑星科学

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