Email this article On the Source of Sub-Terahertz Radiation of the Solar Flare on April 2, 2017
- Authors: Morgachev A.S.1,2, Tsap Y.T.1,3, Smirnova V.V.1,4, Motorina G.G.1,5
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Affiliations:
- Central Astronomical Observatory at Pulkovo, Russian Academy of Sciences
- Lobachevsky State University of Nizhny Novgorod
- Crimean Astronomical Observatory, Russian Academy of Sciences
- University of Turku
- Astronomical Institute of the Czech Academy of Sciences
- Issue: Vol 59, No 8 (2019)
- Pages: 1114-1120
- Section: Article
- URL: https://journals.rcsi.science/0016-7932/article/view/158008
- DOI: https://doi.org/10.1134/S0016793219080140
- ID: 158008
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Abstract
The study analyzes the millimeter emission of a solar flare on April 2, 2017, observed by the Bauman Moscow State Technical University telescope RT-7.5. Based on the flare atmosphere model proposed by Machado et al. (1980) we inferred the emission contribution function of the source and determined its main characteristics. The results show that the subterahertz emission is formed in a thin, chromospheric layer with a thickness of about 10 km with a plasma temperature of ~105 K. The proposed homogeneous model of the layer makes it possible to explain the observed spectral features. The obtained results suggest the chromospheric source heating with heat fluxes generated in the overlying flare areas.
About the authors
A. S. Morgachev
Central Astronomical Observatory at Pulkovo, Russian Academy of Sciences; Lobachevsky State University of Nizhny Novgorod
Author for correspondence.
Email: a.s.morgachev@mail.ru
Russian Federation, St. Petersburg, 196140; Nizhny Novgorod, 603950
Yu. T. Tsap
Central Astronomical Observatory at Pulkovo, Russian Academy of Sciences; Crimean Astronomical Observatory, Russian Academy of Sciences
Email: a.s.morgachev@mail.ru
Russian Federation, St. Petersburg, 196140; Nauchny, 298409
V. V. Smirnova
Central Astronomical Observatory at Pulkovo, Russian Academy of Sciences; University of Turku
Email: a.s.morgachev@mail.ru
Russian Federation, St. Petersburg, 196140; Turku, 20500
G. G. Motorina
Central Astronomical Observatory at Pulkovo, Russian Academy of Sciences; Astronomical Institute of the Czech Academy of Sciences
Email: a.s.morgachev@mail.ru
Russian Federation, St. Petersburg, 196140; Ondrejov, 251 65
