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Long-period pulsations of the thermal microwave emission of the solar flare of June 2, 2007 from data with high spatial resolution

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Abstract

Data from the Nobeyama Radioheliograph at 17 GHz with high spatial and temporal resolution are used to detect quasi-periodic pulsations with periods from 55 to 250 s in the thermal component of the microwave emission of a solar flare loop observed on June 2, 2007. Observed pulsations with periods of about 110–120 s are co-phased along the entire loop axis. The observed periodicity is most likely due to modulation of the radio emission by slow magnetoacoustic waves trapped in the filamentary flare loop.

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Correspondence to E. G. Kupriyanova.

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Original Russian Text © E.G. Kupriyanova, V.F. Melnikov, V.M. Puzynya, K. Shibasaki, H.S. Ji, 2014, published in Astronomicheskii Zhurnal, 2014, Vol. 91, No. 8, pp. 652–661.

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Kupriyanova, E.G., Melnikov, V.F., Puzynya, V.M. et al. Long-period pulsations of the thermal microwave emission of the solar flare of June 2, 2007 from data with high spatial resolution. Astron. Rep. 58, 573–577 (2014). https://doi.org/10.1134/S1063772914080022

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  • DOI: https://doi.org/10.1134/S1063772914080022

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