Pulsations of non-thermal emissions from the solar flare of November 5, 1992 and the trap-plus-precipitation model |
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Authors: | T B Goldvarg Yu T Tsap Yu G Kopylova A V Stepanov |
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Institution: | 11131. Kalmyk State University, Elista, Russia 21131. Crimean Astrophysical Observatory, Scientific Research Institute, Nauchnyi, Crimea, Ukraine, 98409 31131. Main Astronomical Observatory, Russian Academy of Sciences, Pulkovo, Russia
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Abstract: | The fine structure of the time variations of microwave and hard X-ray emissions from the solar flare of November 5, 1992 was analyzed. On the basis of the wavelet analysis, pulsations of intensity with a period of about 6 s were revealed in both the data sets. The observed time delay between the coronal plasma emission measure maximum and the temperature maximum is consistent with the concept of chromospheric evaporation. The anticorrelation observed between the time profiles of the microwave and hard X-ray emissions and the nature of the time delays between the peaks are associated with the excitation of radial fast magneto-acoustic oscillations in the flare loop (a coronal trap). Consequences of the obtained results are discussed. |
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