Multi-wavelength study of a strong impulsive solar limb flare on 2002 August 3

Abstract: We made a detailed study of the impulsive solar flare of GOES class X1.0 which occurred near the west limb on 2002 August 3, peak time 19:07UT. There is particularly good data coverage of this event, with simultaneous observations in EUV, soft and hard X-rays available. We used TRACE 171Å images to study the morphology and evolution of this event. Soft X-ray spectra in the wavelength range 3.34–6.05Å measured by the RESIK Bragg crystal spectrometer on CORONAS-F were used for determination of the evolution of the flare plasma temperature. Data from the RHESSI instrument were used to investigate properties of the higher-temperature plasma during the flare. [Copyright &y& Elsevier]