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Issue A&A
Volume 448, Number 2, March III 2006
Page(s) 739 - 752
Section The Sun
DOI http://dx.doi.org/10.1051/0004-6361:20053740

A&A 448, 739-752 (2006)
DOI: 10.1051/0004-6361:20053740

Multi-wavelength study of coronal waves associated with the CME-flare event of 3 November 2003

B. Vrsnak1, A. Warmuth2, M. Temmer1, 3, A. Veronig3, J. Magdalenic1, A. Hillaris4 and M. Karlický5

1  Hvar Observatory, Faculty of Geodesy, Kaciceva 26, 10000 Zagreb, Croatia
    e-mail: bvrsnak@geodet.geof.hr
2  Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
3  Institute of Physics, University of Graz, Universitätsplatz 5, 8010 Graz, Austria
4  Department of Physics, University of Athens, 15784 Panepistimiopolis Zografos, Athens, Greece
5  Astronomical Institute of the Academy of Sciences of the Czech Republic, 25165 Ondrejov, Czech Republic

(Received 1 July 2005 / Accepted 30 September 2005)

Abstract
The large flare/CME event that occurred close to the west solar limb on 3 November 2003 launched a large-amplitude large-scale coronal wave that was observed in H$\alpha$ and Fe XII 195 Å spectral lines, as well as in the soft X-ray and radio wavelength ranges. The wave also excited a complex decimeter-to-hectometer type II radio burst, revealing the formation of coronal shock(s). The back-extrapolation of the motion of coronal wave signatures and the type II burst sources distinctly marks the impulsive phase of the flare (the hard X-ray peak, drifting microwave burst, and the highest type III burst activity), favoring a flare-ignited wave scenario. On the other hand, comparison of the kinematics of the CME expansion with the propagation of the optical wave signatures and type II burst sources shows a severe discrepancy in the CME-driven scenario. However, the CME is quite likely associated with the formation of an upper-coronal shock revealed by the decameter-hectometer type II burst. Finally, some six minutes after the launch of the first coronal wave, another coronal disturbance was launched, exciting an independent (weak) decimeter-meter range type II burst. The back-extrapolation of this radio emission marks the revival of the hard X-ray burst, and since there was no CME counterpart, it was clearly ignited by the new energy release in the flare.


Key words: Sun: flares -- Sun: coronal mass ejections (CMEs) -- Sun: corona -- shock waves -- magnetohydrodynamics (MHD)





© ESO 2006


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