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Victor Herrero Radio Astronomy Blog

Dynamics of flares and fine structure of solar radio emission 30-7000 MHz

20 May 2015, 16:53 UTC
Dynamics of flares and fine structure of solar radio emission 30-7000 MHz
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Dynamics of flares and fine structure of solar radio emission 30-7000 MHzI refer to Gennady Chernov, Valery Fomichev, Baolin Tan, Yihua Yan, Chengming Tan, Qijun Fu, 2014 :http://arxiv.org/abs/1409.0660http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:1409.066036 references at:http://adsabs.harvard.edu/cgi-bin/nph-ref_query?bibcode=2015SoPh..290...95C&refs=REFERENCES&db_key=ASTAbstract: "Radiobursts exhibiting fine structure observed over two years during the rising phase of Cycle 24 by the Chinese Solar Broadband Radio Spectrometer (SBRS/Huairou) in the range 1 - 7.6 GHz and the spectrograph IZMIRAN in the meter range (25 - 270 MHz) are analyzed. In five events the zebra structure, various fiber bursts, and fast pulsations were observed. These observations have great importance for testing different theoretical models of fine structure formation, as, for example, only for explaining the zebra structure more than ten mechanisms have been proposed. The events on 15 and 24 February 2011 are of the greatest interest. In the course of the flare on 15 February (which occurred close to the center of disk) the zebra structure was observed during three sequential flare brightenings. The polarization changed sign in the third. This behavior of polarization combined with images of the corresponding flare brightenings, obtained in extreme ultraviolet radiation by the Solar Dynamics Observatory (SDO/AIA, 171 Å), provides important clues. The polarization of radio emission in all ...

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