Počet záznamů: 1
Interplanetary type II radio bursts: STEREO observations and Monte Carlo Simulations
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SYSNO ASEP 0491089 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Interplanetary type II radio bursts: STEREO observations and Monte Carlo Simulations Tvůrce(i) Krupař, Vratislav (UFA-U) RID, ORCID
Eastwood, J. P. (GB)
Magdalenic, J. (BE)
Gopalswamy, N. (US)
Krupařová, Oksana (UFA-U) RID, ORCID
Szabo, A. (US)Celkový počet autorů 6 Zdroj.dok. Geophysical Research Abstracts, EGU General Assembly 2018, Vol. 20. - Göttingen : European Geosciences Union, 2018
EGU2018-4367-1Poč.str. 1 s. Forma vydání Online - E Akce EGU General Assembly 2018 Datum konání 08.04.2018 - 13.04.2018 Místo konání Vienna Země AT - Rakousko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova coronal mass ejections ; radio bursts emissions ; energetic particle ; Monte Carlo simulations Vědní obor RIV DG - Vědy o atmosféře, meteorologie Obor OECD Fluids and plasma physics (including surface physics) Institucionální podpora UFA-U - RVO:68378289 Anotace 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 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.Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2019
Počet záznamů: 1