Observations of type II and III solar bursts indicated that white type III bursts mane appear at any altitude, from the vary lov corona into interplanetary space, type II solar bursts do not act the same way. This work focuses on recent observations in the radio region on the low frequency region from 45 MHz to 870 MHz. Our analysis employed the accuracy of the daily solar burst measurements of e-CALLISTRO network. It was found solar burst type II exploded uite minimum with 1-2 events from 2006 − 2010. However, the data 2011 for solar burst type II increased drastically with 16 events has been recordered. The occurencess of Coronal Mass Ejections (CMEs) events are also increasing up to four times in 2011. Most of both events can be observed in the range of 150 MHz till 500 MHz. Overcall, we can say that the range of photon energy for solar burst type III is between 7.737 x 10-7 eV to 1.596 x 10-6 eV. In the case of solar burst type II, the distribution of energy is much smaller with 1.596 x 10-6 eV to 6.906 x 10-6 eV. Detailed investigatoin of solar burst will be cocern the 2011 data seem to a significant tend for both types. We showed that the increasing of both solar burst events via years implies directing an increasing of solar activities including sunspot number, solar fare and Coronal Mass Ejections (CMEs) events. It is expected that both types will increase gradually in the beginning of 2014.
International Letters of Chemistry, Physics and Astronomy (Volume 37)
Z. S. Hamidi et al., "Occurrences Rate of Type II and III Solar Radio Bursts at Low Frequency Radio Region 45-870 Mhz", International Letters of Chemistry, Physics and Astronomy, Vol. 37, pp. 103-112, 2014