Abstract
Data for the period 1979–1982 on Coronal Mass Ejections (CME), observed by the SOLWIND white light coronagraph aboard the P78-1 satellite and on associated microwave bursts, are analyzed. It is shown that in events with coronal mass ejections a soft radio spectrum (maximum frequency f m ≤ 5–7 GHz) is mainly observed in the longest (duration d ≥ 5 min microwave bursts of moderate and strong intensities, i.e. for a combination of parameters typical of flares associated with large CMEs. It is supposed that in such events, both long duration and soft microwave bursts are caused by prolonged energy release at high coronal altitudes, when the magnetic field above the active region, strongly disturbed by the CME, relaxes via magnetic reconnection in vertical current sheets and the formation of a post-flare loop system.
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© 1994 Springer-Verlag
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Chertok, I.M., Gnezdilov, A.A. (1994). Frequency spectra of solar microwave bursts associated with coronal mass ejections. In: Belvedere, G., Rodonò, M., Simnett, G.M. (eds) Advances in Solar Physics. Lecture Notes in Physics, vol 432. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-58041-7_218
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DOI: https://doi.org/10.1007/3-540-58041-7_218
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