Solar flare hard X-rays measured by spectrometer 'IRIS': spectral and temporal characteristics

摘要

Sub-second time structure of hard X-rays observed during solar flares by spectrometer "IRIS" on a board of CORONAS satellite are discussed. The burst duration of 80ms and FWHM about 30ms are recorded in powerful flaie of August 20, 2002 year at 0828:16,77 UT A confidence level of this peak is 6a.