Beesham A, Vaidya Collapse with Nonzero Radial Pressure.pdf (333.21 kB)
Vaidya collapse with nonzero radial pressure and charge
journal contribution
posted on 2022-01-05, 11:45 authored by Aroonkumar BeeshamThe cosmic censorship hypothesis is regarded as one of the most important unsolved
problems in classical general relativity; viz., will generic gravitational collapse of a star after it has
exhausted its nuclear fuel lead to black holes only, under reasonable physical conditions. We discuss
the collapse of a fluid with nonzero radial pressure within the context of the Vaidya spacetime
considering a decaying cosmological parameter as well as nonzero charge. Previously, a similar
analysis was done, but without considering charge. A decaying cosmological parameter may also
be associated with dark energy. We found that both black holes and naked singularities can form,
depending upon the initial conditions. Hence, charge does not restore the validity of the hypothesis.
This provides another example of the violation of the cosmic censorship hypothesis. We also discuss
some radiating rotating solutions, arriving at the same conclusion.