کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1769078 1020254 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Periodical patterns in major flare occurrence and their relation to magnetically complex active regions
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Periodical patterns in major flare occurrence and their relation to magnetically complex active regions
چکیده انگلیسی

A periodical occurrence rate of major solar flares (observed in hard X-rays) of ∼24 days (synodic) was first reported by Bai (1987) [Bai, T. Distribution of flares on the sun – superactive regions and active zones of 1980–1985. ApJ 314, 795–807, 1987] for the years 1980–1985. Here, we report a significant relation between the appearance of the 24-day period in major Hα flares and magnetically complex sunspot groups (i.e., including a γ and/or δ configuration). From synoptic maps of magnetograms (NSO/KP) patterns in the magnetic flux evolution are traced which might be the cause of the 24-day period observed in flare activity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 38, Issue 5, 2006, Pages 886–890
نویسندگان
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