RELATIONSHIP OF THE PROTON FLUX INTENSITY WITH RELATIVE DISTANCE BETWEEN HARMONICS OF TYPE II RADIO BURSTS IN THE RANGE 25-180 МHZ

Анотація

In this work, the relative distance be-
tween the harmonics of type II radio bursts and its rela-
tionship with the intensity of the proton flux with an ener-
gy > 30 MeV are studied.
The studied sample contains 112 solar proton events (SPE)
for the period from 24-11-2000 to 20-12-2014 years, accom-
panied by type II radio bursts in the range of 25-180 MHz.
For analysis, we used the original recordings of the dy-
namic spectrum in the range of 25-180 MHz from the So-
lar Radio spectrograph (SRS), as well as the original re-
cordings of the proton flux intensity with an energy > 1-
100 MeV according to GOES data.
A comparative analysis showed that for the vast majori-
ty of solar proton events, the relative distance between the
harmonics of a type II burst varies over time over a wide
range. Moreover, each event is characterized by a gradual
decrease in the relative distance to the minimum value
with subsequent increase.
In this work, we also studied the relationship between
the proton flux intensity of solar cosmic rays (SCR) and
the relative distance between the harmonics of type II ra-
dio bursts at a given time. A comparative analysis showed
that there is a fairly strong relationship between the proton
flux intensity with an energy > 30 MeV and the frequency
f 1 at the fundamental harmonic, at which the minimum
value of the relative distance between the harmonics of the
type II burst is observed. It was shown that the lower the
frequency f 1 at the fundamental harmonic, the higher the
intensity of the proton flux.