Advertisement

The Distribution and the Projected Density of Stars around a Black Hole in the Centre of a Globular Cluster

  • Guang Zhong Xie

Abstract

One of the astrophysical topics of great interest is the black hole. Already two middle mass (~ 1 M) black holes, in Cygnus and Vela, are well established. For example the compact X-ray source in Cyganus has a lower mass limit of about 5. Now the upper mass-limits for compact stars are well below this value: (i) the Chandrasekhar limit for white dwarfs and cold neutron stars ~ 1.4 M; (ii) the Oppenbeimer-Volkoff limit for hot neutron stars with no other interactions considered ~ 2.2 M; and (iii) the Fang-Ruffini limit for neutron stars under the most general conditionsu ~ 3.2 M. Thus Cygnus Xl is probably a black hole*.

Keywords

Black Hole Neutron Star Globular Cluster Compact Star Particle Number Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    P.J.E.Peebles, Ap. J., 178, 370 (1972).CrossRefGoogle Scholar
  2. 2.
    J.N.Bachall and R.A.Wolf, Ap. J., 209, 214 (1976).CrossRefGoogle Scholar
  3. 3.
    J.M.Huntey and W.C.Saclaw, Ap. J., 199, 328 (1975).CrossRefGoogle Scholar
  4. 4.
    P.J.Yong, Ap. J., 221, 721 (1978).CrossRefGoogle Scholar
  5. 5.
    W.L.W.Sangent, P.J.Yong, Ap. J., 221731 (1978).CrossRefGoogle Scholar
  6. 6.
    S.Weinberg, Gravitation and Cosmology (1972).Google Scholar
  7. 7.
    K.Suffern, Aust. J. Phys., 27, 93 (1974).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • Guang Zhong Xie
    • 1
  1. 1.Yunna ObservatoryAcademy Sinica of ChinaChina

Personalised recommendations