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محسن جواهریان

محسن جواهریان

مرتبه علمی: استادیار
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: مرکز تحقیقات نجوم و اختر فیزیک مراغه
نشانی:
تلفن:

مشخصات پژوهش

عنوان
Resonant Absorption of a Solar Coronal Loop Observed by SDO/AIA
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Sun: corona Sun: loop Sun: oscillations
سال
2018
مجله Iranian Journal of Astronomy and Astrophysic
شناسه DOI
پژوهشگران Javad Ganjali ، Nastaran Farhang ، Shahriar Esmaeili ، Mohsen Javaherian ، Hossein Safari

چکیده

Solar coronal loops represent variety of fast, intermediate, and slow normal mode oscillations. In this study, the transverse oscillations of a coronal loop observed on 11 October, 2013 are analyzed using the extreme ultra-violet (EUV) images of the Sun. Employing the 171 ˚A solar images recorded by the Solar Dynamic Observatory (SDO)/Atmospheric Imaging Assembly (AIA), we extracted the oscillation parameters such as period, damping time, loop length, and the loop width. The period and the damping of this loop are obtained to be 19 ± 1 and 70 ± 1 minutes, respectively. Also, the damping quality, the ratio of the damping time to the period, is obtained to be 3.6. Therefore, we conclude that the damping of the transverse oscillation of this loop is in the strong damping regime. It is suggested that the resonant absorption would be a well suitable candidate for the damping mechanism of the studied loop.