|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
On chromosperic response at the pre-CME phase of the 18 solar flareстатья
- Авторы: Kashapova L.K., Kotrc P., Kupryakov Yu A.
- Журнал: Central European Astrophysical Bulletin,
- Том: 35
- Год издания: 2011
- Первая страница: 125
- Последняя страница: 134
- Аннотация: We present a study of the X1.5 solar flare that occurred in the AR 10314 and was followed by a partial halo CME. Our main target was to find characteristic parameters associated with the pre-CME and CME phase. Special attention is devoted to parameters obtained from chromospheric observations. We analysed Hα spectra and Hα slit-jaw images from the Ondřejov Multichannel Flare Spectrograph observed with a high temporal resolution. Comparison of the Hα shift and the HXR data revealed that before the CME onset each injection of accelerated particles to the chromosphere was followed by upward mass motions with a delay of about 45 seconds. We did not find a significant value of the Hα shift that could be associated with Moreton wave velocities during the ejection phase. All values of the Hα blue shift corresponded to the evaporation process. Thus the role of the chromosphere in the CME preparatory phase was to increase the amount of the mass above the flare region which was then released by the CME. Bibliographic Code: 2011CEAB...35..125K
- Добавил в систему: Купряков Юрий Алексеевич