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A Critique of the Polarimetric Evidence on the Nature of CBS

Published online by Cambridge University Press:  14 August 2015

J.F.L. Simmons ,
C. Aspin  and
J. C. Brown
J.F.L. Simmons
Affiliation:
Dept. of Astronomy, University of Glasgow
C. Aspin
Affiliation:
Dept. of Astronomy, University of Glasgow
J. C. Brown
Affiliation:
Dept. of Astronomy, University of Glasgow

Abstract

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Determination of the values and confidence intervals for physical parameters and the orbital inclination of binaries from polarimetry is critically discussed. A new method based on X2 best fitting and incorporating constraints imposed by the canonical model is developed and applied to polarimetric data for Cygnus X-1. Whereas the X2 best fitting procedure yields an inclination of |i| = 79° for Cygnus X-1, the level of noise, and the model dependency of the parameter determination give rise to a very broad confidence interval around this value. Our method also indicates the accuracy of the polarimetric measurements necessary for more precise parameter determinations.

Type
VI. X-Ray Binaries
Information
Symposium - International Astronomical Union , Volume 88: Close Binary Stars: Observations and Interpretation , 1980 , pp. 343 - 345
Copyright
Copyright © Reidel 1980 

References

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