Chandrasekhar, black holes, and singularities

@article{Penrose1996ChandrasekharBH,
  title={Chandrasekhar, black holes, and singularities},
  author={Roger Penrose},
  journal={Journal of Astrophysics and Astronomy},
  year={1996},
  volume={17},
  pages={213-231}
}
  • R. Penrose
  • Published 1 December 1996
  • Physics
  • Journal of Astrophysics and Astronomy

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References

SHOWING 1-10 OF 68 REFERENCES

Two black holes attached to strings

An axisymmetric solution of the Einstein-Maxwell equations is found which represents the static placement of two charged black holes of equal mass (M) and opposite charge (±Q) with ∣Q∣ > M. The

Black holes in general relativity

It is assumed that the singularities which occur in gravitational collapse are not visible from outside but are hidden behind an event horizon. This means that one can still predict the future

The Large Scale Structure of Space-Time

TLDR
The theory of the causal structure of a general space-time is developed, and is used to study black holes and to prove a number of theorems establishing the inevitability of singualarities under certain conditions.

On the Nutku—Halil solution for colliding impulsive gravitational waves

The equations appropriate for space-times with two space-like Killing-vectors are set up, ab initio, and explicit expressions for the components of the Riemann, the Ricci, and the Einstein tensors in

On Massive neutron cores

It has been suggested that, when the pressure within stellar matter becomes high enough, a new phase consisting of neutrons will be formed. In this paper we study the gravitational equilibrium of

The singularities of gravitational collapse and cosmology

  • S. HawkingR. Penrose
  • Mathematics
    Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
  • 1970
A new theorem on space-time singularities is presented which largely incorporates and generalizes the previously known results. The theorem implies that space-time singularities are to be expected if

The gravitational perturbations of the Kerr black hole III. Further amplifications

  • S. Chandrasekhar
  • Mathematics
    Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
  • 1979
The present paper is devoted to an amplification of the solution of the Newman–Penrose equations considered in the two earlier papers of this series. The principal amplification consists in showing

On Continued Gravitational Contraction

When all thermonuclear sources of energy are exhausted a sufficiently heavy star will collapse. Unless fission due to rotation, the radiation of mass, or the blowing off of mass by radiation, reduce

Gravitational collapse and spacetime singularities

accompanied by a violent release of energy, possible in the form of gravitational radiation. The detailed mathematical discussion of such situations is difficult since the full complexity of general

The Kerr metric and stationary axisymmetric gravitational fields

  • S. Chandrasekhar
  • Physics
    Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
  • 1978
A treatment of Einstein’s equations governing vacuum gravitational fields which are stationary and axisymmetric is shown to divide itself into three parts: a part essentially concerned with a choice
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