Abstract Title: *
Hard X-ray diagnostic of proton-producing solar flares compared to other emission signatures

Authors: *
Miteva, R. (1), Koleva, K. (2), Dechev, M. (2), Veronig, A. (3), Kozarev, K. (2), Temmer, T. (3),
P. Duchlev (2), K. Dissauer (3)

(1) Space Research and Technology Institute, Bulgarian
Academy of Sciences 
(2) Institute of Astronomy with National Astronomical Observatory,
Bulgarian Academy of Sciences 
(3) Institute of Physics-IGAM, University of Graz

Institution: *
Space Research and Technology Institute - Bulgarian Academy of Sciences

Preferred format: *
Oral

Abstract Text: *
The study presents preliminary results on analyzing hard X-ray (HXR) emission of solar flares
which are accompanied with in situ protons. For this purpose, data from the RHESSI satellite
has been used. The instrument observes energies from few to 100s MeV with 4 second time
resolution. Since the spacecraft launch in 2002, we selected well observed proton-related flares
(onset to rise phase of HXR emission) for further detailed analysis. Standard procedure for
spectral analysis is employed. The results are compared with the emission signatures in soft
X-ray, EUV and radio wavelengths. Preliminary results are outlined and discussed.