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Broadband microwave sub-second pulsations in an expanding coronal loop of the 2011 August 10 flare
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SYSNO ASEP 0464348 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Broadband microwave sub-second pulsations in an expanding coronal loop of the 2011 August 10 flare Author(s) Mészárosová, Hana (ASU-R) RID, ORCID
Rybák, J. (SK)
Kashapova, L. K. (RU)
Gömöry, P. (SK)
Tokhchukova, S. (RU)
Myshyakov, I. (RU)Number of authors 6 Source Title Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 593, September (2016), A80/1-A80/11Number of pages 11 s. Publication form Online - E Language eng - English Country FR - France Keywords Sun ; flares ; corona ; UV radiation ; oscillations Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics OECD category Astronomy (including astrophysics,space science) R&D Projects GAP209/10/1680 GA ČR - Czech Science Foundation (CSF) GAP209/12/0103 GA ČR - Czech Science Foundation (CSF) Institutional support ASU-R - RVO:67985815 UT WOS 000385820100037 EID SCOPUS 84989229109 DOI 10.1051/0004-6361/201528062 Annotation We studied the characteristic physical properties and behavior of broadband microwave sub-second pulsations observed in an expanding coronal loop during the GOES C2.4 solar flare on 2011 August 10.The complex microwave dynamic spectrum and the expanding loop images were analyzed with the help of SDO/AIA/HMI,RHESSI, and the STEREO/SECCHI-EUVI data. The EUV intensity of the expanding loop increased just before the radio source triggering. Two EUV bidirectional flows that are linked with the start time of the loop expansion. Their positions were close to the radio source. We demonstrate that periodic regime of the electron acceleration in a model of the quasi-periodic magnetic reconnection might be able to explain physical properties and behavior of the sub-second pulsations. The depolarization process of the microwave emission might be caused by a plasma turbulence in the radio source. Finally, the observed EUV flows might be linked with reconnection outflows. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2017
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