期刊
ASTROPHYSICAL JOURNAL
卷 885, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/ab3bce
关键词
Alfven waves; Solar atmospheric motions; Solar chromosphere
资金
- Spanish Ministry of Science [AYA2014-55078-P]
- FP7 European Research Council [ERC-2017-CoG771310-PI2FA]
Linear fast magnetoacoustic waves are introduced into a cold stratified plasma model made up of a doubly periodic ensemble of straight diminished-Alfvn-speed tubes. Coupling between fast and Alfvn waves is produced by stratification and the tube structures, and scattering is strong for wavelengths comparable to the inter-tube separation. Ambipolar diffusion is found to be enhanced by the structuring and is potentially significant at high frequencies. The production of kink waves is discussed and modeled. It is found that the tube structure significantly alters the wave energy reaching the corona and the form that it takes, even for moderate fast-slow tube contrast, with Alfvn waves becoming prominent.
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