Collaborative analysis of solar maximum mission, Venera, and Prognoz solar x ray bursts

摘要

One of the prime objectives of this investigation was to compare SMM-HXRBS data with Venera data for the same solar flare X-ray events in order to search for rapid fluctuations in the time histories and to establish limits for the anisotropy of the X-ray emission. The latter objective was to be carried out for those solar events for which the HXRBS/Sun/Venera angle was relatively large. In order to accomplish these objectives, a careful cross-calibration of the HXRBS and Venera detectors was required. Such a cross-calibration should be carried out on a number of solar flare events satisfying two criteria: the events should be those for which the HXRBS/Sun/Venera angles were small, so that the effects of anisotropic emission (if any) could be assumed to be negligible; and the events should display a rather wide range of energy spectra, so that any systematic effects in the comparison procedure could be identified. A cross-calibration was first attempted for the event of February 5, 1982; this flare satisfied the second criterion above, but not the first.