Highlights from the HEAO-1 survey of cataclysmic variable stars

Details Highlights from the HEAO-1 survey of cataclysmic variable stars Highlights from the HEAO-1 survey of cataclysmic variable stars

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979stia...8021985c&link_type=abstract

American Association of Variable Star Observers, Journal, vol. 7, Fall-Winter 1978-1979, p. 57-63.

Astronomy and Astrophysics

Astronomy

Heao 1, Variable Stars, X Ray Astronomy, X Ray Stars, Dwarf Stars, Energetic Particles, Gamma Rays, Light Curve, Visual Observation, X Ray Imagery, X Ray Sources

Scientific paper

A survey of the X-ray properties of approximately 150 cataclysmic variable stars was conducted using the High Energy Astronomical Observatory, HEAO-1. U Geminorum was discovered to be emitting an intense soft X-ray flux and a weak hard X-ray flux during an optical outburst. Hard X-ray flickering was discovered from SS Cygni during optical quiescence. EX Hydrae, and possibly AY Lyrae, were detected in the soft X-ray band while in their quiescent states. Most of the cataclysmic variables evidenced no X-ray emission, including approximately 20 dwarf novae which were observed by HEAO-1 during optical outbursts. Finally, soft X-ray pulsations were discovered from SS Cyg and U Gem.

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