Long-term periodicities in X-ray binaries

Details Long-term periodicities in X-ray binaries Long-term periodicities in X-ray binaries

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004nuphs.132..588c&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 132, p. 588-591.

Physics

Nuclear Physics

1

Scientific paper

A significant number of X-ray binaries are now known to exhibit long-term periodicities on timescales of ~10 - 100 days. Several physical mechanisms have been proposed that give rise to such periodicities, one of which is radiation-driven warping and precession of the accretion disk. Recent theoretical work predicts the stability to disk warping as a function of the mass ratio, binary radius, viscosity and accretion efficiency, and we confront this theory with observed longterm behaviour of a sample of neutron star X-ray Binaries. We find good agreement, establishing this mechanism observationally for the high-luminosity systems studied here.

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