Abstract
view Abstract Citations (52) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The discovery of low-energy X-ray emission from U Geminorum. Mason, K. O. ; Lampton, M. ; Charles, P. ; Bowyer, S. Abstract Strong X-ray emission in the 0.15-0.5-keV band has been detected from U Gem during optical outburst. The peak flux observed in the 0.15-0.5-keV range is 3.2 x 10 to the -10th erg/sq cm per sec (about 3 x 10 to the 32nd erg/sec at 100 pc). No soft X-ray emission was detected during the quiescent optical phase at a level which is at least 100 times less than the peak outburst flux. During outburst, the soft X-ray source appears to be highly variable on a time scale of a few hours, but this variability is consistent with orbital dependence for the limited data sample available. The origin of the soft X-ray emission is discussed. Publication: The Astrophysical Journal Pub Date: December 1978 DOI: 10.1086/182847 Bibcode: 1978ApJ...226L.129M Keywords: Binary Stars; Novae; Satellite Observation; White Dwarf Stars; X Ray Sources; Heao 1; Spectral Energy Distribution; Ultraviolet Astronomy; Astrophysics; Dwarf Novae:X Rays; U Geminorum Stars:X Rays full text sources ADS | data products SIMBAD (2)
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