The long term X-ray behaviour of X 1705--440

Details The long term X-ray behaviour of X 1705--440 The long term X-ray behaviour of X 1705--440

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aspc..261..525p&link_type=abstract

The Physics of Cataclysmic Variables and Related Objects, ASP Conference Proceedings, Vol. 261. Edited by B. T. Gänsicke, K. Beu

Physics

Scientific paper

X 1705--440 is a neutron star X-ray transient which shows an unusually high degree of long term variability. We examine the lightcurve and compare it to a simple analytic form of the standard disc instability model, modified by irradiation. The X-ray lightcurve of X 1705--440 shows three clearly resolved decays which may be well modelled as an exponential followed by a linear decline. We use the decay rates to find a value for the disc radius. We hence find that a Roche lobe filling secondary must be evolved.

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