Analysis of Type II radio burst relationship with CME driven shocks

Type II radio bursts are known to be the signatures of coronal shocks. In this paper we examine relationship between 129 type in frequency range 35 – 450 MHz observed at Culgooora observatory during May 2002 October 2015 and associated CMEs. We apply Newkirk (1961) density model determine formation height IIs. find that 109/129 cases, were preceded/ succeeded by The CME events which is above burst source categorized as group I (91/129 cases). 91% also with flares 58% these originate decaying phase flare. correlation speed shock for limb 0.33.The IIs below (18/129 driven could have been exciter bursts.88% 62% rising 0.96. 20/129 cases our data set, not III. 90% flares. 77% originating Poor temporal association (9/69 cases) X class period. Our results suggest inspite metric bursts, majority shocks (84%) successful exciting 35-450 domain. temporally correlated CMEs likely excited (type > height) events. case supposedly < ,majority them