Mathematics – Logic
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005gregr..37.1347s&link_type=abstract
General Relativity and Gravitation, Volume 37, Issue 8, pp.1347-1370
Mathematics
Logic
34
Cosmological Black Holes, Conformal Killing Horizons, Conformal Transformations, Einstein-De Sitter Universe
Scientific paper
As an example of a dynamical cosmological black hole, a spacetime that describes an expanding black hole in the asymptotic background of the Einstein-de Sitter universe is constructed. The black hole is primordial in the sense that it forms ab initio with the big bang singularity and its expanding event horizon is represented by a conformal Killing horizon. The metric representing the black hole spacetime is obtained by applying a time dependent conformal transformation on the Schwarzschild metric, such that the result is an exact solution with a matter content described by a two-fluid source. Physical quantities such as the surface gravity and other effects like perihelion precession, light bending and circular orbits are studied in this spacetime and compared to their counterparts in the gravitational field of the isolated Schwarzschild black hole. No changes in the structure of null geodesics are recorded, but significant differences are obtained for timelike geodesics, particularly an increase in the perihelion precession and the non-existence of circular timelike orbits. The solution is expressed in the Newman-Penrose formalism.
Dyer Charles C.
Sultana Joseph
No associations
LandOfFree
Cosmological black holes: A black hole in the Einstein-de Sitter universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cosmological black holes: A black hole in the Einstein-de Sitter universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmological black holes: A black hole in the Einstein-de Sitter universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-854348