Statistical Survey of Coronal Mass Ejections and Interplanetary Type II Bursts

0511797 - ÚFA 2020 RIV US eng J - Článek v odborném periodiku
Krupař, Vratislav - Magdalenic, J. - Eastwood, J. P. - Gopalswamy, N. - Krupařová, Oksana - Szabo, A. - Němec, F.
Statistical Survey of Coronal Mass Ejections and Interplanetary Type II Bursts.
Astrophysical Journal. Roč. 882, č. 2 (2019), č. článku 92. ISSN 0004-637X. E-ISSN 1538-4357
Grant CEP: GA ČR(CZ) GJ17-06818Y; GA ČR(CZ) GA17-06065S
Grant ostatní: AV ČR(CZ) AP1401
Program: Akademická prémie - Praemium Academiae
Institucionální podpora: RVO:68378289
Klíčová slova: solar-terrestrial relations * Sun: coronal mass ejections (CMEs) * Sun: radio radiation
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 5.746, rok: 2019
Způsob publikování: Open access
https://iopscience.iop.org/article/10.3847/1538-4357/ab3345

Coronal 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 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 2008 March and 2014 August. The shock associated radio emission was compared with CME parameters included in the Heliospheric Cataloguing, Analysis and Techniques Service catalog. We found that faster CMEs are statistically more likely to be associated with the interplanetary type II radio bursts. We correlate frequency drifts of interplanetary type II bursts with white-light observations. to localize radio sources with respect to CMEs. Our results suggest that interplanetary type II bursts are more likely to have a source region situated closer to CME flanks than. CME leading edge regions.
Trvalý link: http://hdl.handle.net/11104/0302046