000004091 001__ 4091
000004091 005__ 20190204125927.0
000004091 037__ $$aPOSTER-2019-0074
000004091 100__ $$aKrupar, V.
000004091 245__ $$aInterplanetary type II radio bursts: STEREO observations and Monte Carlo Simulations
000004091 260__ $$c2018
000004091 269__ $$c2018-04-09
000004091 520__ $$aCoronal mass ejections (CMEs) are responsible for most severe space weather events such as solar energetic particle events and geomagnetic storms at Earth. Type II radio bursts are slow drifting emissions produced by beams of suprathermal electrons accelerated at CME-driven MHD shock waves propagating through the corona and interplanetary medium. Here, we report a statistical study of 153 interplanetary type II radio bursts observed by the two STEREO spacecraft between March 2008 and August 2014. The shock associated radio emission was compared with CMEs from the HELCATS (Heliospheric Cataloguing, Analysis and Techniques Service) catalogue. We found that fast CMEs are statistically more likely to be associated with the interplanetary type II radio bursts. We have correlated frequency drifts with white-light observations in order to localize radio sources with a respect to a CME geometry. Our results suggest that interplanetary type II bursts are more likely to have a source region situated close to CME flanks than close to the CME nose. Finally, we performed Monte Carlo simulations to study a role of propagation on a visibility of interplanetary type II radio bursts.
000004091 536__ $$aBRAIN.be/$$cCCSOM/$$fCCSOM
000004091 594__ $$aSTCE
000004091 700__ $$aEastwood, J. P.
000004091 700__ $$aMagdalenic, J. 
000004091 700__ $$aGopalswamy, N.
000004091 700__ $$aKruparova, O. 
000004091 700__ $$aSzabo, A.
000004091 773__ $$t20th EGU General Assembly, held 08-14 April, 2018, Vienna, Austria
000004091 8560_ $$fjasmina.magdalenic@observatoire.be
000004091 980__ $$aCPOSTER