A similarity solution to the kinematic α2ω dynamo equation with time-dependent coefficients

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

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 α2ω 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.

原文???core.languages.en_GB???
頁(從 - 到)128-139
頁數12
期刊Astrophysical Journal
410
發行號1
DOIs
出版狀態已出版 - 10 6月 1993

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