Pulsations of non-thermal emission from the solar flare of 5 November 1992 and trap-plus-precipitation model

  • T.B. Goldvarg Калмыцкий государственный университет, Элиста, Россия
  • Yu.T. Tsap Crimean Astrophysical Observatory
  • Yu.G. Kopylova Главная астрономическая обсерватория РАН, Пулково, Россия
  • A.V. Stepanov Главная астрономическая обсерватория РАН, Пулково, Россия


The fine structure of time variations of microwave and hard X-ray emissions from the solar flare of 5 November 1992 was analyzed. On the basis of the wavelet analysis, pulsations of intensity with the period of 6 seconds were revealed from both data sets. The observed time delay between the coronal plasma emission measure maximum and the temperature maximum is in good agreement with the concept of the chromospheric evaporation. The observed anticorrelation between time profiles of the microwave and hard X-ray emissions, peculiarities in time delays between the observed peaks seem to be related to excitation of fast magnetoacoustic oscillations in the flare loop (a coronal trap). Consequences of the obtained results are discussed.


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Goldvarg T., Tsap Y., Kopylova Y., Stepanov A., 2013. Izvestiya Krymskoi Astrofizicheskoi Observatorii, vol. 109, no. 1, pp. 138-147. Available at: https://jn.craocrimea.ru/index.php/izvcrao/article/view/313 (Accessed: 2December2020)
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