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Dynamo driven by weak plasma turbulence
Tong, Y; Chian, ACL; Su, Y
1997
发表期刊ASTRONOMY & ASTROPHYSICS
卷号317期号:1页码:265-272
摘要The dynamo mechanism driven by weak plasma turbulence, called the p-omega dynamo, is studied. Under the assumption of the uniform rotation of a celestial body, a dynamo equation is derived from the magnetic induction equation based on mean field electrodynamics. It is well known that differential rotation is indispensable for an alpha-omega dynamo to be operative. In contrast to the alpha-omega dynamo model, no matter if the rotation angular velocity is uniform or not, no matter in the absence or the presence of the convection, the p-omega dynamo is operative. Thp coupling between uniform rotation and plasma turbulence waves can also produce source terms in the dynamo equation which lead to the generation of a poloidal and toroidal field. The existence of differential rotation will evidently enhance the action of the p-omega dynamo. We present a complete uniform-rotational solution of the dynamo equation here, and dynamo solutions for several types of differential rotation are given. Finally, we discuss the physical nature of these dynamo solutions in Sect. 5.
关键词Magnetic Fields Turbulence Plasmas Mhd
收录类别SCI
语种英语
WOS记录号WOS:A1997WP87200046
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8326
专题月球与深空探测研究部
作者单位1.NPE, INST SPACE RES, SAO JOSE DOS CAMPOS, BRAZIL
2.UNIV CAMBRIDGE, DAMTP, CAMBRIDGE CB2 1TN, ENGLAND
3.CHINESE ACAD SCI, BEIJING ASTRON OBSERV, BEIJING 100080, PEOPLES R CHINA
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Tong, Y,Chian, ACL,Su, Y. Dynamo driven by weak plasma turbulence[J]. ASTRONOMY & ASTROPHYSICS,1997,317(1):265-272.
APA Tong, Y,Chian, ACL,&Su, Y.(1997).Dynamo driven by weak plasma turbulence.ASTRONOMY & ASTROPHYSICS,317(1),265-272.
MLA Tong, Y,et al."Dynamo driven by weak plasma turbulence".ASTRONOMY & ASTROPHYSICS 317.1(1997):265-272.
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