Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jrasc..84..191p&link_type=abstract
Journal of the Royal Astronomical Society of Canada (ISSN 0035-872X), vol. 84, June 1990, p. 191-198. Research supported by NSER
Astronomy and Astrophysics
Astronomy
Black Holes (Astronomy), Gravitational Collapse, Space-Time Functions, Astronomical Models, Electric Charge, Stellar Rotation
Scientific paper
The gravitational collapse of a charged, spherical star does not terminate in an infinite concentration of matter as would the collapse of an uncharged, spherical star. Rather, the star's radius decreases to a minimum value and then increases as the star emerges into a new universe. The presence in the collapse of aspherical perturbations (in the form of gravitational radiation) demolishes this picture completely; the radiation falling into the black hole at late times becomes infinitely focused and blueshifted and hence provokes the formation of a new singularity which seals off the black hole tunnel. As in the Schwarzschild picture, the generic collapse of a charged star stops at a singularity which is not avoidable by any observer falling into the hole. Relevance of this result to uncharged, rotating black holes is discussed.
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