Angular Momentum Transport by MHD Turbulence in Accretion Disks(Poster)

スポンサーリンク

概要

• 論文の詳細を見る

• The saturation level of the magnetorotational instability (MRI) is investigated using three-dimensional MHD simulations. The shearing box approximation is adopted and the vertical component of gravity is ignored, so that the evolution of the MRI is followed in a small local part of the disk. We focus on the dependence of the saturation level of the stress on the gas pressure, which is a key assumption in the standard α disk model. From our numerical experiments it is found that there is a weak power-law relation between the saturation level of the Maxwell stress and the gas pressure in the nonlinear regime ; the higher the gas pressure, the larger the stress. Our numerical results are qualitatively consistent with an idea that the saturation level of the MRI is determined by a balance between the growth of the MRI and the dissipation of the field through reconnection.

• 理論物理学刊行会の論文
• 2004-11-15

著者

• Turner N

  Jet Propulsion Laboratory

• Stone James

  Department Of Astrophysical Sciences Peyton Hall Princeton University

• SANO Takayoshi

  Institute of Laser Engineering, Osaka University

• INUTSUKA Shu-ichi

  Department of Physics, Kyoto University

• TURNER Neal

  Jet Propulsion Laboratory

• Sano Takayoshi

  Institute Of Laser Engineering Osaka University

• Inutsuka Shu-ichi

  Department Of Physics Kyoto University

関連論文

• Angular Momentum Transport by MHD Turbulence in Accretion Disks(Poster)
• The Structure of Accretion Disks Formed by Merging of White Dwarfs
• Angular Momentum Transport by MHD Turbulence in Accretion Disks(Poster)
• On the Vertical Structure of Radiation-Supported Accretion Disks(Poster)
• High-Resolution Near-Infrared Polarimetry of a Circumstellar Disk around UX Tau A

スポンサーリンク