Coronal mass ejections detected in solar mean magnetic field

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机构：
[1] [1,Boberg, Fredrik
[2] 3,Lundstedt, Henrik
来源：
Boberg, Fredrik | 2000年 / American Geophysical Union, Washington, DC, United States卷 / 27期
关键词：
Magnetic fields - Magnetism - Sun - Wavelet transforms;
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摘要：
One minute resolution solar mean magnetic field sequences during 74 coronal mass ejection events are analyzed using wavelet transforms. A significant fraction of the resulting wavelet power spectra shows a characteristic peak at the time of the coronal mass ejection. With an average period of 13 minutes, the signature in the solar mean field is most likely the result of global waves trigged by the departing CME.
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