Scientific achievements. Solar system

2010

Sources of polarized radiation with unusual spectral features discovered in the Sun

In the framework of the study of solar active regions that produce powerful flares the researchers from the RATAN-600 radio telescope have detected sources with features in the form of a sharp decrease in the intensity of polarized radiation in various parts of the recorded frequency range (2-16 GHz), sometimes changing the sign of polarization. Modeling of the phenomenon indicates the presence of a hot coronal loop at the heights of about 10 Mm (the height of the transition region is about 2-5 Mm). The magnetic field strength of the hot region was measured at 360-450 gauss.

In collaboration with St. Petersburg State University.

(Contact — V.M. Bogod).