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Black Holes and X-ray Binaries

Published online by Cambridge University Press:  25 April 2016

N. V. Vidal ,
D. T. Wickramasinghe  and
M. S. Bessell
N. V. Vidal
Affiliation:
Mount Stromlo and Siding Spring Observatory, Research School of Physical Sciences, Australian National University
D. T. Wickramasinghe
Affiliation:
Mount Stromlo and Siding Spring Observatory, Research School of Physical Sciences, Australian National University
M. S. Bessell
Affiliation:
Mount Stromlo and Siding Spring Observatory, Research School of Physical Sciences, Australian National University
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Extract

Zeldovich and Guseynov suggested that neutron stars and collapsed stars (‘Black holes’) may be found as highly evolved companions of single lined spectroscopic binaries. They pointed out that the detection of X-rays or γ-rays from such a system would constitute positive evidence for the highly evolved nature of the companion. Trimble and Thorne searched through the catalogue of orbital elements of spectroscopic binaries (Batten) and found a few systems which were single line spectroscopic binaries with companions of mass M2 ≥ (1.4 M⊙, M1), where M1 is the primary mass. None of these has, however been identified with an X-ray source and other explanations such as multiple systems could not be ruled out. The alternative procedure, namely the identification of galactic X-ray sources with spectroscopic binaries is clearly more rewarding from the view point of searching for black holes and neutron stars. In particular, a high mass secondary which could be identified with a black hole is more likely to be discovered as a companion of an X-ray binary with a massive primary such as a blue supergiant.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 4 , October 1973 , pp. 190 - 191
Copyright
Copyright © Astronomical Society of Australia 1973

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References

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