Coordinated RHESSI/CDS/TRACE/H$\alpha$ observations of chromspheric evaporation in an M-class flare

A. Veronig$^1$, J. Rybak$^2$, M. Temmer$^3$, S. Stoiser$^1$, B. Vrsnak$^3$, W. Otruba$^4$

$^1$Institute of Physics, University of Graz, Universitatsplatz 5, A-8010, Graz, Austria
$^2$ Astronomical Institute, Slovak Academy of Sciences, Slovak Republic
$^3$Hvar Observatory, Faculty of Geodesy, Kaciceva 26, HR-10000 Zagreb, Croatia
$^4$Kanzelhohe Observatory, Institute of Physics, University of Graz, Austria

Coordinated RHESSI/CDS/TRACE/H-alpha observations of chromspheric evaporation in an M-class flare abstract: We study a two-ribbon flare and associated filament eruption that was observed during a coordinated JOP campaign including high-cadence TRACE 171, CDS/SoHO, RHESSI and H-alpha observations from Hvar and Kanzelhohe observatories. During one of the hard X-ray bursts, the CDS slit was located on the site of energy deposition. In chromospheric spectral lines, upflow velocities up to 100 km/s were observed indicative of chromospheric evparation. The CDS spectroscopic results will be compared with the electron and energy fluxes derived from RHESSI hard X-ray spectra.