A SIMILARITY SOLUTION TO THE KINEMATIC ALPHA(2)OMEGA DYNAMO EQUATION WITH TIME-DEPENDENT COEFFICIENTS

NCU Institutional Repository > 理學院 > 天文研究所 > 期刊論文 > Item 987654321/27931

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題名:	A SIMILARITY SOLUTION TO THE KINEMATIC ALPHA(2)OMEGA DYNAMO EQUATION WITH TIME-DEPENDENT COEFFICIENTS
作者:	KO,CM
貢獻者:	天文研究所
關鍵詞:	MAGNETIC-FIELDS;GENERATION
日期:	1993
上傳時間:	2010-06-29 19:36:31 (UTC+8)
出版者:	中央大學
摘要:	The indication of an association between the galactic magnetic field strength and the current star formation rate in some nearby galaxies, and the possible time variation of star formation activities in a galaxy, stimulates studies on a dynamo with time-dependent parameters. A simplified kinematic alpha3omega dynamo equation is set up, and a similarity solution to this equation is presented. The temporal variation of the field lies solely in the temporal variation of a length scale of the dynamo. When the solution is applied to a simple slab model it is found that only even modes exist. An example shows that the time dependence of the field can be very different from a constant parameter kinematic dynamo.
關聯:	ASTROPHYSICAL JOURNAL
顯示於類別:	[天文研究所] 期刊論文

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