Rapidly evolving light curves of Low Mass X-Ray Binaries

Details Rapidly evolving light curves of Low Mass X-Ray Binaries Rapidly evolving light curves of Low Mass X-Ray Binaries

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rmxac..20..211m&link_type=abstract

Compact Binaries in the Galaxy and Beyond, Proceedings of the conference held 17-22 November, 2003 in La Paz, Baja California Su

Astronomy and Astrophysics

Astronomy

4

Binaries: Close, Stars: Neutron, X-Rays: Binaries, X-Rays: Bursts

Scientific paper

A few Galactic Low Mass X-Ray Binaries (LMXBs) have shown drastically evolving X-ray and/or optical orbital light curves. In two short-period LMXBs, MS 1603+2600 (= UW CrB, P[orb] = 111 min) and 4U 1916-053 (see e.g. Homer et al. 2001), the variations in the light curve morphology seem to be repeating in a periodic manner. We present first results of a photometric monitoring campaign of MS 1603+2600, showing evidence of a 5-day superorbital period in this yet unclassified source. The observations also unraveled optical flares, reminiscent of type I bursts, suggesting a neutron star primary.

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