# Gravitational Collapse : The Role of General Relativity 1

@inproceedings{Penrose2002GravitationalC, title={Gravitational Collapse : The Role of General Relativity 1}, author={Roger Penrose}, year={2002} }

Stars whose masses are of the same order as that of the sun (M ) can find a final equilibrium state either as a white dwarf or, apparently, (after collapse and ejection of material) as a neutron star. These matters have been nicely discussed in the lectures of Hewish and Salpeter. But, as they have pointed out, for larger masses no such equilibrium state appears to be possible. Indeed, many stars are observed to have masses which are much larger than M —so large that it seems exceedingly…

## 545 Citations

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## References

SHOWING 1-6 OF 6 REFERENCES

Newman: personal communication

- 1969

The correct page number is 662

- Misner:Phys. Rev. Lett.,
- 1969

Ellis: Astrophys

- Journ., 152,
- 1968

Misner: personal communication

- 1968

Ya

- B. Zel’dovich and I. D. Novikov: Žurn.Ėksp. Teor, Fiz . 49, 170 (1965). English trans., Sov. Phys. JETP, 22, 122
- 1966

in:Albert Einstein Philosopher Scientist, edited by P. A

- Schilpp (New York,
- 1959