On a Flat-shape Emission in the Solar Flare on 7th June 2012

0398907 - ASÚ 2014 RIV HR eng J - Journal Article
Kotrč, Pavel - Kupryakov, Yu. A. - Kashapova, L. K. - Bárta, Miroslav
On a Flat-shape Emission in the Solar Flare on 7th June 2012.
Central European Astrophysical Bulletin. Roč. 37, č. 2 (2013), s. 555-562. ISSN 1845-8319.
[Hvar Astrophysical Colloquium /12./. Hvar, 03.09.2012-07.09.2012]
R&D Projects: GA ČR GAP209/12/1652; GA ČR GA13-24782S
Institutional support: RVO:67985815
Keywords : solar flare * energy relase * energy transport
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

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.
Permanent Link: http://hdl.handle.net/11104/0226261