Abstracts submitted by Jasmina Magdalenic
Multi-wavelength study of coronal waves associated with a CME-flare event
J. Magdalenic [1], B.Vrsnak [1], S. Pohjolainen [2], M.Temmer [1], H. Aurass [3]
[1]Hvar Observatory, Faculty of Geodesy, Croatia; [2]Tourla Observatory, University of Turku, Finland; [3]Astrophysical Institute Potsdam, Germany
We present the multi-wavelength study of the CME-flare event recorded on 24 December 1996. The kinematics and evolution of the shock wave signatures - type II radio burst, and the EIT-wave are analysed and compared with the CME evolution and kinematics.
In the study we employ dynamic spectra, position of the NRH radio sources and LASCO-C1 observations, which altogether represents an outstanding set of observations for a detailed analysis of this limb CME-flare event.
The obtained velocity of the shock wave is significantly higher than the CME velocity (1100 and 230 km/s, respectively). Moreover, since CME kinematics shows that the main acceleration phase of the CME happens 10-20 min after the shock wave was lunched, we conclude that the shock wave on 24 December 1996 is not CME-driven. On the other hand, the shock wave was probably ignited by the flare since it was closely associated with the flare impulsive phase.
However, the second shock wave that occurred 9 min after the first shock might have been driven by the CME. |
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