Multi-wavelength study of coronal waves associated with the CME-flare event of 24 December 1996

J. Magdalenic$^1$, B. Vrsnak$^1$, S. Pohjolainen$^2$, M. Temmer$^1$, N. Lehtinen$^2$, H. Aurass$^3$

$^1$Hvar Observatory, Faculty of Geodesy, Kaciceva 26, HR-10000 Zagreb, Croatia
$^2$Tourla Observatory, University of Turku, Finland
$^3$Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany

The CMEs play important role in formation of the coronal waves; however it is still an open question if all coronal shocks are CME driven. We present the multi-wavelength case study of the CME-flare event recorded on 24 December 1996. Analysis of the shock wave signatures (type II radio bursts), and the kinematics of the CME expansion show that the shock waves on 24 December 1996 are not CME-driven. It seems, at least in this case, that the presence of the CME does not necessarily imply the shock was launched and driven by the CME; however the presence of the CME might be the necessary condition.