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PMO OpenIR  > 太阳活动的多波段观测研究团组  > 期刊论文
题名: Structures of magnetized thin accretion disks
作者: Li, XQ; Ji HaiSheng(季海生)
刊名: SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY
出版日期: 2002-11-01
卷号: 45, 期号:11, 页码:1487-1496
关键词: accretion disks ; young stellar objects ; magnetohydrodynamics
文章类型: Article
英文摘要: We investigate the magnetohydrodynamic (MHD) process in thin accretion disks. The relevant momentum as well as magnetic reduction equations in the thin disk approximation are included. On the basis of these equations, we examine numerically the stationary structures, including distributions of the surface mass density, temperature and flow velocities of a disk around a young stellar object (YSO). The numerical results are as follows: (i) There should be an upper limit to the magnitude of magnetic field, such an upper limit corresponds to the equipartition field. For relevant magnitude of magnetic field of the disk's interior the disk remains approximately Keplerian. (ii) The distribution of effective temperature T(r) is a smoothly decreasing function of radius with power index gamma = -1/2, corresponding to the observed radiation flux density, provided that the magnetic field is suitably chosen.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Mathematics, Applied ; Mathematics
研究领域[WOS]: Mathematics
关键词[WOS]: COLLIMATED ELECTROMAGNETIC JETS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000179209500015
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15798
Appears in Collections:太阳活动的多波段观测研究团组_期刊论文

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作者单位: 1.Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China
2.Chinese Acad Sci, Purple Mtn Observ, Nanjing 210008, Peoples R China
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