Role of Chromospheric and Coronal Ejections in the Development of LDE Flares in the Sun
- 作者: Shakhovskaya A.N.1, Grigor’eva I.Y.2, Isaeva E.A.3
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隶属关系:
- Crimean Astrophysical Observatory, Russian Academy of Sciences
- Central (Pulkovo) Astronomical Observatory, Russian Academy of Sciences
- URAN-4 Radio Astronomical Observatory
- 期: 卷 59, 编号 7 (2019)
- 页面: 850-857
- 栏目: Article
- URL: https://journals.rcsi.science/0016-7932/article/view/157823
- DOI: https://doi.org/10.1134/S0016793219070211
- ID: 157823
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详细
Based on observations in the Hα and extreme ultraviolet lines, as well as in the radio and X-ray wavelengths, we study the eruptive events of September 22 and 24, 2011, that occurred in the active region (AR) NOAA 11302. It has been found that a complex magnetic configuration has formed as a result of appearance of new bipolar sunspots near the tail sunspots. From the comparison of two long flares, it follows that they were related to high-energy coronal mass ejections (CMEs), whose eruption mechanisms differed significantly at the level of the chromosphere and the lower corona. In the case of September 22, repeated eruptions of prominences before the CME took place, while on September 24, recurrent jets were observed before and after the CME. In both cases, a CME merging could take place, after which the precipitating substance led to the development of long flares in the soft X-ray range and the formation of a post-eruptive arcade, which was clearly visible in the extreme ultraviolet lines.
作者简介
A. Shakhovskaya
Crimean Astrophysical Observatory, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: anshakh@yandex.ru
俄罗斯联邦, Nauchnyi, 298409
I. Grigor’eva
Central (Pulkovo) Astronomical Observatory, Russian Academy of Sciences
编辑信件的主要联系方式.
Email: irina.2014.irina@mail.ru
俄罗斯联邦, , St. Petersburg, 196140
E. Isaeva
URAN-4 Radio Astronomical Observatory
编辑信件的主要联系方式.
Email: isaevaode@gmail.com
乌克兰, Odessa, 65000
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