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On a Flat-shape Emission in the Solar Flare on 7thстатья
- Авторы: Kotrc P., Kupryakov Yu A., Kashapova L.K., Barta M.
- Журнал: Central European Astrophysical Bulletin,
- Том: 37
- Год издания: 2013
- Первая страница: 555
- Последняя страница: 562
- Аннотация: We present results of the study of the C1.5 solar flare~(SOL2012-06-07T05:56) which occurred on June 7, 2012. This weak flare showed an extraordinary long flat emission in the X-ray flux curve in the 3-12 keV energy band. Duration of this flat period was about 10 minutes while the duration of the flare was almost 20 minutes. As this particular shape was observed both by RHESSI and FERMI, it could not be caused by an instrumental effect. We analyzed the optical spectra and slit-jaw images from the solar spectrograph in Ondřejov and in the hard X-ray by RHESSI as well as EUV data obtained by SDO and all available microwave data. We found that the "flat emission" period was also observed in microwaves (5-17 GHz). During this period the motion of the flare source from the spot to south direction was revealed. A localized maximum of the chromospheric emission was also shifting in the same direction. Quasi-periodic pulsations with periods of about 5 minutes were detected in evolution of the electron temperature that is an evidence of the energy input during the "flat emission" period. Bibliographic Code: 2013CEAB...37..555K
- Добавил в систему: Купряков Юрий Алексеевич