Were all white holes in the early Universe converted into black holes

Journal Article · Mon Jul 15 00:00:00 EDT 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.44.325· OSTI ID:5597484

Dey, T K; Banerji, S ^[1]

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1. Department of Physics, The University of Burdwan, Burdwan 713104, India (IN)

It has been claimed that in the early Universe any white hole must have been converted to a black hole. But taking the simple case of an expanding homogeneous dust sphere colliding with a homogeneous spherical shell of dust which are mutually noninteracting, we find that the mean motion of the combined system will be expanding or contracting to a distant observer according as the combined radius at the instant of collision is less than or greater than the Schwarzschild radius.

• OSTI ID: 5597484
• Journal Information: Physical Review, D (Particles Fields); (USA), Vol. 44:2; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
UNIVERSE
WHITE HOLES
STAR EVOLUTION
BLACK HOLES
BOUNDARY CONDITIONS
COSMIC DUST
METRICS
SCHWARZSCHILD RADIUS
DUSTS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources