HELCATS: Statistical results on interplanetary type II bursts observed by STEREO/Waves

0471712 - ÚFA 2017 US eng A - Abstrakt
Krupař, Vratislav - Eastwood, J. P. - Magdalenic, J. - Gopalswamy, N. - Bisi, M. M. - Davies, J. A. - Harrison, R. A. - Barnes, D.
HELCATS: Statistical results on interplanetary type II bursts observed by STEREO/Waves.
AGU Fall Meeting. San Francisco: American Geophysical Union, 2016. SH11C-2246.
[AGU Fall Meeting 2016. 12.12.2016-16.12.2016, San Francisco]
Institucionální podpora: RVO:68378289
Klíčová slova: HELCATS * type II radio burst * shock waves * coronal mass ejections
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
https://agu.confex.com/agu/fm16/meetingapp.cgi/Paper/168702

Heliospheric Cataloguing, Analysis and Techniques Service (HELCATS) is a project of the European Union's Seventh Framework Programme. The current version of the HELCATS manually-generated Coronal Mass Ejection (CME) catalogue contains more than 1,300 CMEs observed between 2007 and 2014. CMEs are sometimes associated with the so called type II bursts which are considered to be radio signatures of fast electrons accelerated at the CME-driven shock front. We present statistical results on 153 type II bursts associated with manually-identified CMEs in the HELCATS catalogue. We found that faster CMEs are more likely to produce radio emissions. By comparing frequency drifts with white-light observations we calculated angular deviations of type II burst propagation directions from radial. Our results confirm that type II bursts statistically arise from CME flanks. We also discuss the use of interplanetary radio emission in the context of space weather forecasting.


Trvalý link: http://hdl.handle.net/11104/0269265