Radio triangulation of solar radio emissions associated with the 2012 July 23 CME

0474188 - ÚFA 2018 DE eng A - Abstrakt
Krupař, Vratislav - Krupařová, Oksana - Santolík, Ondřej - Bothmer, V. - Mrotzek, N. - Eastwood, J. P.
Radio triangulation of solar radio emissions associated with the 2012 July 23 CME.
Geophysical Research Abstracts. Göttingen: European Geosciences Union, 2017. EGU2017-8836. ISSN 1607-7962.
[EGU General Assembly 2017. 23.04.2017-28.04.2017, Vienna]
Institucionální podpora: RVO:68378289
Klíčová slova: coronal mass ejections * interplanetary radio emissions
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://meetingorganizer.copernicus.org/EGU2017/EGU2017-8836.pdf

Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic
storms if Earth directed. The backside CME from 2012 July 23 belongs among historical extreme solar events due
to associated solar energetic particle fluxes and the CME-driven shock speed above 2000 kms−1
. Here, we focus
on analysis of associated interplanetary (IP) radio emissions. The frequency drift of the IP type II burst provides
us with a reasonable speed of the CME-driven shock. We have successfully applied a radio direction-finding
technique to IP type II and type III bursts observed by the two identical radio receivers aboard the two STEREO
spacecraft. The radio triangulation technique allows us to localize radio sources in the IP medium. The obtained
locations of the type II and type III bursts are in a very good agreement with the CME direction. We demonstrate
the complementarity between radio triangulation and 3D reconstruction techniques for space weather applications.
Trvalý link: http://hdl.handle.net/11104/0271297