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[76.06] X-ray and radio observations of the 20 February 2002 solar flare

N.R. Vilmer (LESIA- Observatoire de Paris- France), S. Krucker, R.P. Lin (Space Sciences Laboratory, University of California, Berkeley), R.A. Schwartz (NASA-GSFC), A. Klassen (Astrophysikalisches Institut Potsdam (AIP)- Germany), RHESSI Team

The GOES C7.5 flare on 20 February 2002 at ~11:06 UT was simultaneously observed at X-ray wavelengths by RHESSI and at metric/decimetric wavelengths by the Nançay radioheliograph (NRH). We shall present a first comparison of the time evolution of X-ray images in different energy bands observed with RHESSI and of the time evolution of images of the radio emission sites at 5 frequencies in the 150-450 MHz range observed by the NRH. The identification of the different radio spectral features is provided by the Tremsdorf radiospectrograph. We shall also investigate whether the evolution in space and time of the X-ray sources are related to any spectral evolution.

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.