DECAMETER TYPE IV BURST WITH UNUSUAL HIGH POLARIZATION

Abstract

We present results of observations of Type IV burst with unusual high polarization equalled in maximum phase about 100%. This burst was registered both by URAN-2 and NDA radio telescopes on 13 July 2022. It continued for about 5 hours and consisted of sub-bursts with high frequency drift rates and had short durations. We associate it with the weak CME, which propagated in the East direction in the form of thread-like structure. Theoretical description of sub-burst in the plasma mechanism of radio emission allow explaining their high polarization, high drift rates and short durations.