The effect of poloidal magnetic field on type i planetary migration

Takayuki Muto, Masahiro N. MacHida, Shu Ichiro Inutsuka

研究成果: ジャーナルへの寄稿学術誌査読

抄録

We study the effect of poloidal magnetic field on type I planetary migration by linear perturbation analysis with the shearing-sheet approximation and the analytic results are compared with numerical calculation. We investigate the cases where magneto-rotational instability (MRI) does not occur: either the disk is two-dimensional, or a very strong field is exerted. We derive formulae for torque exerted on the planet for both cases. We find that two-dimensional torque is suppressed when plasma beta is less than 1 and three-dimensional modes dominate, in contrast to unmagnetized case.

本文言語英語
ページ(範囲)401-406
ページ数6
ジャーナルProceedings of the International Astronomical Union
3
S249
DOI
出版ステータス出版済み - 10月 2007
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 天文学と天体物理学
  • 宇宙惑星科学

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