期刊
FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
卷 6, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fspas.2019.00057
关键词
magnetohydrodynamics (MHD); methods: observational; sun: atmosphere; sun: corona; sun: oscillations
资金
- STFC [ST/K004220/1, ST/L002744/1, ST/R000891/1]
- Randox Laboratories Ltd. [059RDEN-1]
- European Research Council (ERC) [724326]
- KU Leuven [GOA-2015-014]
- Science and Technology Facilities Council [ST/P000304/1] Funding Source: researchfish
- STFC [ST/P000304/1, ST/R000891/1, ST/K004220/1, ST/L002744/1] Funding Source: UKRI
The rapid damping of slow magnetoacoustic waves in the solar corona has been extensively studied in previous years. Most studies suggest that thermal conduction is a dominant contributor to this damping, albeit with a few exceptions. Employing extreme-ultraviolet (EUV) imaging data from SDO/AIA, we measure the damping lengths of propagating slow magnetoacoustic waves observed in several fan-like loop structures using two independent methods. The dependence of the damping length on temperature has been studied for the first time. The results do not indicate any apparent decrease in damping length with temperature, which is in contrast to the existing viewpoint. Comparing with the corresponding theoretical values calculated from damping due to thermal conduction, it is inferred that thermal conduction is suppressed in hotter loops. An alternative interpretation that suggests thermal conduction is not the dominant damping mechanism, even for short period waves in warm active region loops, is also presented.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据