ICME propagation analysis using STEREO/WAVES observations

0503963 - ÚFA 2020 DE eng A - Abstrakt
Krupař, Vratislav - Maksimovic, M. - Szabo, A. - Santolík, Ondřej - Krupařová, Oksana
ICME propagation analysis using STEREO/WAVES observations.
Geophysical Research Abstracts. Vol. 21. Göttingen: European Geosciences Union, 2019. EGU2019-11158.
[EGU General Assembly 2019. 07.04.2019-12.04.2019, Vienna]
Institucionální podpora: RVO:68378289
Klíčová slova: space weather forecasting * interplanetary coronal mass ejections (ICMEs) * radio burst tracking * radio waves
Obor OECD: Fluids and plasma physics (including surface physics)
https://meetingorganizer.copernicus.org/EGU2019/EGU2019-11158.pdf

Interplanetary coronal mass ejections (ICMEs) are the primary cause of the most severe and disruptive space weather events at Earth. Their propagation and evolution from the Sun to Earth is still poorly understood making the accurate forecasting of their arrival impossible. Type II radio bursts are generated by beams of suprathermal electrons accelerated at shock waves ahead of ICMEs. However, propagation of radio waves in the solar wind is strongly affected by random electron density fluctuations, which result in radio sources to be apparently shifted further from the Sun. Here, we present several examples of ICME propagation analysis using radio triangulation of type II radio bursts observed by STEREO/WAVES. We applied a new wave vector correction based on the Monte Carlo simulation technique of refraction and scattering of radio waves in the solar wind. We demonstrate a possible application of type II radio burst tracking in space weather forecasting.
Trvalý link: http://hdl.handle.net/11104/0295715