Abstract
Cir X-l is one of the most puzzling X-ray binaries known. At times it is one of the brightest sources in the X-ray sky, while at other times it can be very weak. The source shows periodic radio flares which suggest an orbital period of 16.6 days (Nicolson et al. 1980). It was suspected to be a black hole an the basis of very fast fluctuations, which are like those in Cyg X-l. The detection of type I X-ray bursts by Tennant et al. 1986a, 1986b showed that it is a neutron star.
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© 1994 Springer Science+Business Media Dordrecht
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Oosterbroek, T., Van Der Klis, M., Kuulkers, E., Van Paradijs, J. (1994). Fast Timing Behaviour of Circinus X-1. In: Wamsteker, W., Longair, M.S., Kondo, Y. (eds) Frontiers of Space And Ground-Based Astronomy. Astrophysics and Space Science Library, vol 187. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0794-5_89
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DOI: https://doi.org/10.1007/978-94-011-0794-5_89
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