文章基本信息

标题：Resonant absorption of the slow sausage wave in the slow continuum
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作者：D. J. Yu ; D. J. Yu ; T. Van Doorsselaere 等
期刊名称：Astronomy & Astrophysics
印刷版ISSN：0004-6361
电子版ISSN：1432-0746
出版年度：2017
卷号：602
页码：1-10
DOI：10.1051/0004-6361/201630355
语种：English
出版社：EDP Sciences
摘要：Aims. General analytical formulas for the damping rate by resonant absorption of slow sausage modes in the slow (cusp) continuum are derived and the resonant damping of the slow surface mode under photospheric conditions is investigated. Methods. The connection formula across the resonant layer is used to derive the damping rate for the slow sausage mode in the slow continuum by assuming a thin boundary. Results. It is shown that the effect of the resonant damping on the slow surface sausage mode in the slow continuum, which has been underestimated in previous interpretations, could be efficient under magnetic pore conditions. A simplified analytical formula for the damping rate of slow surface mode in the long wavelength limit is derived. This formula can be useful for a rough estimation of the damping rate due to resonant absorption for observational wave damping.
关键词：enmagnetohydrodynamics (MHD)Sun: photosphereSun: oscillations