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Solar radio bursts and acceleration of solar energy particles

Bulletin of the Crimean Astrophysical Observatory

Abstract

The correlation between the proton flux intensity I p with the energies E p > 1−100 MeV and radio burst parameters for 107 solar energetic events is considered using the observation data for 1989–2005 obtained with GOES and Wind satellites, as well as the Radio Solar Telescope Network (RSTN). It has been revealed that 73 and 77% of the events were accompanied by type-II radio bursts in the meter (m II, 25–299 MHz) and the decameter-hectometer (DH II, 20 kHz–14 MHz) wavelength ranges, respectively. The correlation coefficient between I p and the frequency drift velocity of the type-II bursts V II did not exceed 0.40. As V II increased, the intensity of I p increased for the m-II bursts and decreased for the DH-II bursts. Coronal shock waves accelerate protons more efficiently than interplanetary waves, and their contribution to acceleration increases with an increase in the particle energy E p . The acceleration of solar energetic particles in the region of the flare energy release is predominant.

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Correspondence to Yu. T. Tsap.

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Original Russian Text © Yu.T. Tsap, E.A. Isaeva, 2012, published in Izvestiya Krymskoi Astrofizicheskoi Observatorii, 2012, Vol. 108, pp. 79–87.

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Tsap, Y.T., Isaeva, E.A. Solar radio bursts and acceleration of solar energy particles. Bull.Crim. Astrophys. Observ. 108, 52–57 (2012). https://doi.org/10.3103/S0190271712010238

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  • DOI: https://doi.org/10.3103/S0190271712010238

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