Long-Term Optical/X-ray Variability of CVs, LMXBs and BeX Sources

Details Long-Term Optical/X-ray Variability of CVs, LMXBs and BeX Sources Long-Term Optical/X-ray Variability of CVs, LMXBs and BeX Sources

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1314..303c&link_type=abstract

INTERNATIONAL CONFERENCE ON BINARIES: In celebration of Ron Webbink's 65th Birthday. AIP Conference Proceedings, Volume 1314, p

Computer Science

Databases

2

X-Ray Binary Stars, Brightness, White Dwarfs, Accretion Disks, X-Ray Binaries, Luminosity And Mass Functions, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Accretion And Accretion Disks

Scientific paper

The study of long-term variability of interacting binaries has been revolutionised at X-ray and optical wavelengths by RXTE's all-sky monitor, combined with ground-based wide-field optical monitoring of the Magellanic Clouds and galactic bulge regions. We present a summary of long-term, super-orbital X-ray modulations detected in luminous galactic X-ray binaries, with particular emphasis on the recently identified multi-year modulations which may be related to solar-cycle-like variations in the low-mass donor stars. The MACHO and OGLE databases of SMC optical monitoring have revealed long-term (200-3000 d) variations in BeX systems that we propose are a function of the formation and depletion of the rapidly-rotating Be star's equatorial disc. We compile a list of the 7 different types of super-orbital modulations now identified in interacting binaries, based on their observed characteristics and likely physical origin.

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