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arXiv 1902.11073astro-ph.HE
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广义翘曲圆盘方程

Generalised warped disk equations

Rebecca G. Martin, Stephen H. Lubow, J. E. Pringle, Alessia Franchini, Zhaohuan Zhu, Stephen Lepp, Rebecca Nealon, C. J. Nixon, David Vallet

摘要:

吸积盘中翘曲的演化方式取决于粘性的大小。对于小粘度的$(α< H/R)$,翘曲以波浪状方式演变;对于大粘度的$H/R<α\ll 1$,翘曲以扩散方式演变。这里$α$是粘度参数,而$H/R$是盘纵横比。目前还没有一套简单的方程来描述这两种制度的演变。在本文中,我们描述了一个可能的解决方案,这个问题,并介绍了一组一维方程,描述了一个扭曲的磁盘,适用于在高和低粘度制度的任意倾斜,但小的翘曲的演变。

英文摘要:

The manner in which warps in accretion disks evolve depends on the magnitude of the viscosity. For small viscosity $(α< H/R)$ the warp evolves in a wave-like manner; for large viscosity $H/R<α\ll 1$ it evolves diffusively. Here $α$ is the viscosity parameter and $H/R$ the disk aspect ratio. Currently there is no simple set of equations which describes the evolution in both regimes. In this paper we describe a possible solution to this problem and introduce a set of one-dimensional equations that describe the evolution of a warped disk that are applicable in both high and low viscosity regimes for arbitrary tilts, but small warps.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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