Investigation of the statistical properties of solar radio burst type II and III

Abstract

Significant statistical solar radio bursts type II and III data obtained with the CALLISTO (Compound Astronomical Low-frequency, Low-cost Instrument for Spectroscopy Transportable Observatories) spectrometer which has been operated between 2006 and 2011 is being reviewed and analyzed. A basic reason for our interest in analysed the statistic of solar burst is to relate the solar burst data with phenomena of the Sun. This work presents the first step toward an analytical model of statistics of solar radio burst information of average events as something crucial to the acceleration mechanism. This study is focused less than 1000 MHz with 35 sites all over the world to achieve 24 hours solar observing. Overall, II (25 events) and III (276 events) were recorded by the CALLISTO instrument in the period of 2006–2011 respectively. The solar burst type II explodes at a quite minimum with 1–2 events from 2006–2010. It has been found qualitatively that most of SRBT II is less than 400 MHz. This trend agrees with the energy of the burst not more than 1.5964 × 10–12 MeV. The results also found that this solar radio burst type III is the main type formed the maximum events until now. On the average, it can be said that the trends of SRBT III burst form the solar burst type II at (187–449) MHz beome a current range of solar radio bursts during CMEs events.