X-Ray bursts from solar flares behind the limb

Autor: Roy, J.-René, Datlowe, Dayton W.
Zdroj: Solar Physics; January 1975, Vol. 40 Issue: 1 p165-182, 18p
Abstrakt: From the UCSD OSO-7 X-ray experiment data, we have identified 54 X-ray bursts with 5.1–6.6 keV flux greater than 103 photon cm-2 keV-1 which were not accompanied by visible Ha flare on the solar disk. By studying OSO-5 X-ray spectroheliograms, Ha activity at the limb and the emergence and disappearance of sunspot groups at the limb, we found 17 active centers as likely seats of the X-ray bursts beyond the limb. We present the analysis of 37 X-ray bursts and their physical parameters. We compare our results with those published by Datlowe et al. (1974a, b) for disk events.
Databáze: Supplemental Index