期刊
ASTROPHYSICAL JOURNAL
卷 588, 期 1, 页码 606-619出版社
IOP PUBLISHING LTD
DOI: 10.1086/373918
关键词
MHD; Sun : oscillations; sunspots
Observed variations of the magnetic field strength in sunspot umbrae consist of intrinsic oscillations and false oscillations due to time-dependent opacity effects. Here we present an approach intended for the separation of these components. We develop a mathematical formalism based on the analytical solution of the MHD equations including gravity, inclination of the magnetic field, and effects of nonadiabaticity. The theoretical results are compared with observations in the near-infrared at 1.56 mum by Bellot Rubio and coworkers using the Tenerife Infrared Polarimeter. It is shown that part of the detected field strength variations can be intrinsic magnetic field oscillations caused by magnetoacoustic waves.
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