Subsecond pulses in microwave emission from the Sun

A.T. Altyntsev^†, N.S. Meshalkina^‡, S.V. Lesovoi^§, D.A. Zhdanov^*
Institute of Solar-Terrestrial Physics, Lermontova str. 125a, Irkutsk, 664033, Russian Federation

The current state of research on microwave subsecond pulses (SSPs) based on observations of radio-frequency radiation from solar flares with high temporal, spatial, and spectral resolutions is reviewed. It is shown that knowledge about the localization of SSP sources in the flare region, available with the help of large radio interferometers, radically affects the understanding of the nature of SSPs. Based on the unique observational material accumulated in radio observations over the past 30 years, the characteristics of SSPs have been studied, they have been classified according to their spectral characteristics, and the mechanisms of their generation have been determined.

Keywords: radio emission, microwave bursts, fine temporal structure
PACS: 96.60.−j
DOI: 10.3367/UFNe.2022.06.039205
URL: https://ufn.ru/en/articles/2023/7/c/
Web of Science

001097028100003
Scopus

2-s2.0-85182880758
ADS NASA

2023PhyU...66..691A
Citation: Altyntsev A T, Meshalkina N S, Lesovoi S V, Zhdanov D A "Subsecond pulses in microwave emission from the Sun" Phys. Usp. 66 691–703 (2023)

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Received: 16th, November 2021, revised: 18th, May 2022, accepted: 14th, June 2022

Оригинал: Алтынцев А Т, Мешалкина Н С, Лесовой С В, Жданов Д А «Cубсекундные импульсы в микроволновом излучении Солнца» УФН 193 737–750 (2023); DOI: 10.3367/UFNr.2022.06.039205

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