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New class of naked singularities and their observational signatures

Sep 12, 2017

19 pages

Published in:

Phys.Rev.D 101 (2020) 4, 043005

Published: Feb 12, 2020

e-Print:

1709.03798 [gr-qc]

DOI:

10.1103/PhysRevD.101.043005

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Abstract: (APS)

By imposing suitable junction conditions on a spacelike hypersurface, we obtain a two-parameter family of possible static configurations from gravitational collapse. These exemplify a new class of naked singularities. We show that these admit a consistent description via a two-fluid model, one of which might be dust. We then study lensing and accretion disk properties of our solution and point out possible differences with black hole scenarios. The distinctive features of our solution compared to the existing naked singularity solutions in the literature are discussed.

Note:

Substantial modifications in the results. Present version is fully re-written, and the title is also changed. 24 pages, 10 figures

Astrophysics and astroparticle physics
gravitation: collapse
strong-energy condition: violation
Einstein equation: solution
singularity: formation
space-time: Robertson-Walker
trapped surface
Schwarzschild
space-time
cosmological model

References(60)

Figures(10)

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