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Rapidly Evolving Light Curves of Low Mass X-Ray Binaries

Published online by Cambridge University Press:  22 February 2018

P. Muhli ,
P. J. Hakala ,
L. Hjalmarsdotter ,
D. C. Hannikainen  and
J. Schultz
P. Muhli
Affiliation:
Observatory, P.O.Box 14, FIN-00014 University Helsinki, Finland ([email protected])
P. J. Hakala
Affiliation:
Observatory, P.O.Box 14, FIN-00014 University Helsinki, Finland ([email protected])
L. Hjalmarsdotter
Affiliation:
Observatory, P.O.Box 14, FIN-00014 University Helsinki, Finland ([email protected])
D. C. Hannikainen
Affiliation:
Observatory, P.O.Box 14, FIN-00014 University Helsinki, Finland ([email protected])
J. Schultz
Affiliation:
Observatory, P.O.Box 14, FIN-00014 University Helsinki, Finland ([email protected])

Extract

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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, Porb = 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.

Type
The Contributed Papers
Information
International Astronomical Union Colloquium , Volume 194: Compact binaries in the galaxy and beyond , 2004 , pp. 211
Copyright
Copyright © Instituto de astronomia/revista mexicana de astronomίa y astrofίsica 2004

References

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