Statistics – Computation
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.131..701p&link_type=abstract
(IAU, Colloquium on Cataclysmic Variables. Recent Multi-Frequency Observations and Theoretical Developments, 93rd, Bamberg, West
Statistics
Computation
Accretion Disks, Binary Stars, Computational Astrophysics, Light Curve, Radiant Heating, X Ray Sources
Scientific paper
After accounting for the influence of an accretion disk, a reliable X-ray heating light curve of the binary X-ray source 4U2129+47/V1727 Cyg is produced. It is noted that a more elaborate accretion disk model is needed to account for the present V-shaped minimum and overall asymmetry in the light curve. Based on certain assumptions, a mass ratio of the compact object of 0.93 solar masses is derived, and from the adopted mass and disk parameters, predictions for the velocities of the companion star and the outer edge of the disk are made, in agreement with previous values. From the distance estimate, an X-ray albedo of 0.5 is obtained.
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