Radio triangulation of the radio signatures of a CME-CME interaction

0453201 - ÚFA 2016 BE eng A - Abstrakt
Magdalenic, J. - Temmer, M. - Krupař, Vratislav - Marqué, C. - Veronig, A. - Vrsnak, B.
Radio triangulation of the radio signatures of a CME-CME interaction.
12th European Space Weather Week. Ostende: STCE, 2015.
[European Space Weather Week /12./. 23.11.2015-27.11.2015, Ostende]
Institucionální podpora: RVO:68378289
Klíčová slova: coronal mass ejection (CME) * radio emission
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://www.stce.be/esww12/program/session_details.php?nr=13#

We present a study of the radio emission associated with the complex interaction of two coronal mass ejections (CMEs), successively launched from the same active region (NOAA AR 11158), on February 14 and February 15, 2011. The continuum-like emission patch has a particular morphology and might be considered either as a continuation of the decametric type II radio emission associated with the second CME, either as a continuation of the type III radio bursts associated with a flare from NOAA AR 11158. This ambiguity complicates the question on the possible origin of the continuum-like emission. In this work, we make us of a radio triangulation technique presented by Magdalenic et al., (2014) to obtain the 3D source positions of the continuum-like emission. Comparing the location of this radio emission, with the positions of the structures of the interacting CMEs, brings important information on the possible origin of the continuum-like emission.The first results indicate that the continuum-like radio emission might be a consequence of the interaction between the shock driven by the second CME and the streamer-like, post-eruption current sheet formed behind the first CME, as suggested by Temmer et al., (2014).
Trvalý link: http://hdl.handle.net/11104/0254064