کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10695028 | 1020257 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the impulsiveness of the Hα emission from a flaring atmosphere
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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چکیده انگلیسی
Emissions from solar flares may reveal fast fluctuations, which can be attributed to small-scale injections of energetic electrons. In this paper, we perform numerical calculations of the Hα emission from a flaring atmosphere bombarded by a pulsating electron beam. We assume that the variation of the electron beam flux consists of two components: a fluctuation component and a background component. The results show that the amplitude of Hα fluctuations varies depending on the magnitude of the background flux of the electron beam. In the case of a higher background flux, the Hα fluctuations are more significant than in the case of a lower background flux. This result is compatible with the observations in which the Hα fluctuations appear preferentially near the hard X-ray maximum.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 35, Issue 10, 2005, Pages 1846-1850
Journal: Advances in Space Research - Volume 35, Issue 10, 2005, Pages 1846-1850
نویسندگان
M.D. Ding,