DIAGNOSTICS OF SOLAR PROTON EVENTS AND CORONAL SHOCK WAVES BY THE PARAMETERS OF SOLAR RADIO BURSTS OF TYPE II AND IV

This paper presents the results of a study of the relationship between solar cosmic rays (SCR) and coronal shock waves (CSW) with the parameters of solar microwave continuum radio bursts of type IV (μ–bursts), as well as with the parameters of type II radio bursts. A total of 349 solar proton events (SPE) were analyzed for the period from 03–02–1986 to 12–02–2018. For the analysis, we used original records of solar radio emission at 8 fixed frequencies in the range of 245–15400 MHz based on data from the Radio Solar Telescope Network (RSTN), original records of dynamic spectra from the SRS (Solar Radio Spectrograph) in the range of 25–180 MHz, tabular data for the velocity of coronal shock waves, as well as original records of the SCR proton flux intensity with proton energies E p in the range of >1–100 MeV based on data from the GOES series devices. It has been previously shown that for most proton events there is a strong relationship between the SCR proton flux and the parameters of type IV continuum microwave bursts, which indicates a dominant role of the SCR acceleration process in the flare region. However, as a result of recent detailed studies of the fine structure of type II radio bursts, a strong relationship was found between the intensity of the mid-relativistic SCR proton flux and certain parameters of type II radio bursts in the 25–180 MHz range. The presence of a strong relationship between the SCR proton flux and the parameters of type II radio bursts indicates an important role of SCR proton acceleration at the fronts of coronal shock waves. A fairly strong relationship was also found between the velocity of coronal shock waves and the parameters of type IV microwave bursts, which definitely indicates that coronal shock waves are associated with solar flares.