کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1766425 1020149 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of the 28 October 2003 and 20 January 2005 solar flares by means of 2.223 MeV gamma-emission line
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Study of the 28 October 2003 and 20 January 2005 solar flares by means of 2.223 MeV gamma-emission line
چکیده انگلیسی

By the data on intensity-time profiles of the neutron capture line of 2.223 MeV we have studied some characteristics of two solar flares, 28 October 2003 and 20 January 2005 (INTEGRAL and CORONAS-F observations, respectively). The SINP code was applied making allowance for the main processes of neutron interactions and deceleration in the solar plasma, character of neutron source, losses of neutrons and density model of the solar atmosphere. Comparison of the computed time profiles of 2.223 MeV line with observed ones for the flare of 28 October 2003 confirms the results obtained earlier for three other flares. Namely, the effect of density enhancement (EDE) in the sub-flare region, as well as the variations (hardening) of accelerated particle spectrum in the course of the event have been confirmed. The usual modeling procedure by the SINP code, however, seems to be inapplicable to the event of 20 January 2005. Possible causes of density enhancements during some flares and peculiarities of the 20 January 2005 flare are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 43, Issue 4, 16 February 2009, Pages 547–552
نویسندگان
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