The Role of Quasi-Transverse Propagation in Observed Polarization of Flare Loop Microwave Radiation


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Resumo

The ordinary mode of gyrosynchrotron radiation was identified to be predominant in some segments of flare loops in solar flares of July 19, 2012, and October 22, 2014. These events were studied by investigation of the quasi-transverse propagation effect on the observed polarization. The analysis involved reconstruction of the magnetic field topology at the linear force-free approximation based on the data of the SDO HMI space telescope and the subsequent simulation of radio emission of flare loops with the GX Simulator software package. The quasi-transverse propagation effect was established to be characteristic for both events, but its influence on the radio emission polarization at a frequency of 17 GHz was observed only in the October 22, 2014 flare.

Sobre autores

A. Shain

Lobachevsky State University of Nizhny Novgorod

Autor responsável pela correspondência
Email: alexandershain.5@gmail.com
Rússia, Nizhny Novgorod, 603022

V. Melnikov

Central Astronomical Observatory at Pulkovo of the Russian Academy of Sciences

Email: alexandershain.5@gmail.com
Rússia, St. Petersburg, 196140

A. Morgachev

Lobachevsky State University of Nizhny Novgorod; Central Astronomical Observatory at Pulkovo of the Russian Academy of Sciences

Email: alexandershain.5@gmail.com
Rússia, Nizhny Novgorod, 603022; St. Petersburg, 196140

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