- PII
- 10.31857/S001679402360028X-1
- DOI
- 10.31857/S001679402360028X
- Publication type
- Status
- Published
- Authors
- Volume/ Edition
- Volume 63 / Issue number 5
- Pages
- 561-569
- Abstract
- Based on observations at the RT-7.5 radio telescope of the Bauman Moscow State Technical University at a wavelength of 3.2 mm (93 GHz), along with other ground-based and space instruments (Siberian radioheliograph, Solar Dynamics Observatory (SDO), Metsähovi radio observatory), the origin of millimeter radiation from a solar flare was investigated for the SOL2022-05-04T08:45 X-ray class M 5.7 flare. An analysis of the time profiles of radiation in the X-ray and centimeter ranges showed that the millimeter emission source is not associated with hot (5 × 105–107 K) coronal plasma. This is also evidenced by the estimate of the sub-THz flux of radiating hot plasma according to the AIA/SDO data, which turned out to be much less than the observed values. Indications were obtained of the development of thermal instability in flare ultraviolet loops. The relationship between the millimeter emission of the flare and the heat source in the solar chromosphere has been substantiated.
- Keywords
- Date of publication
- 01.09.2023
- Year of publication
- 2023
- Number of purchasers
- 0
- Views
- 42
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