Abstract
We analyzed unique observations of two flare events at frequencies of 93 and 140 GHz. The observations were carried out with an RT-7.5 radiotelescope at the Bauman State Technical University (Moscow) using the method of continuous active region tracking with spatial resolutions of 2.5 (at a frequency of 93 GHz) and 1.5 arc-minutes (at 140 GHz). The light curves of the bursts were analyzed and compared with the time profiles of soft and hard X-ray emission obtained by the GOES and RHESSI spacecraft. The radio delete this word flux density spectra were plotted. It was found that the radiation flux at a frequency of 140 GHz exceeded the flux at 93 GHz. This constitutes a new independent confirmation of the presence of a subterahertz flare component, the appearance of which may be associated with the thermal radiation of the hot plasma at the base of flare loops.
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Smirnova, V.V., Nagnibeda, V.G., Ryzhov, V.S. et al. Observations of subterahertz radiation of solar flares with an RT-7.5 radiotelescope. Geomagn. Aeron. 53, 997–999 (2013). https://doi.org/10.1134/S0016793213080239
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DOI: https://doi.org/10.1134/S0016793213080239