Other
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994phrvd..49.5135l&link_type=abstract
Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 49, Issue 10, 15 May 1994, pp.5135-5143
Other
63
Exact Solutions, Black Holes
Scientific paper
The formalism for superposing two axially symmetric exact solutions of Einstein field equations, namely, a black hole and a thin disk, is presented. Three different families of disks are analyzed. The most important family gives the first known exact solution for a black hole surrounded by a realistic heavy disk of matter. This family is the last to be analyzed. The matter of the disks is made of counterrotating particles with as many particles rotating to one side as to the other in such a way that the net angular momentum is zero and the disk is static. The first family consists of peculiar disks, in the sense that they are generated by two opposite dipoles. The particles of the disk have no pressure or centrifugal support. However, when there is a central black hole, centrifugal balance in the form of counterrotation appears. The second family is formed by disks of finite extent, the Morgan and Morgan disks. Within this family there are three parameters to play with: the black hole and disk masses, and the disk radius. These two families develop regions where matter moves with velocities greater than the velocity of light. The second family includes the remarkable configuration of a black hole surrounded by a disk made of tachyonic matter up the edge, which is at the photonic orbit. In addition some configurations have regions where the energy density is negative in violation of the weak energy condition. This is the analogue of the strut that holds two particles apart in Weyl solutions, and which has a negative energy density. The last family admits configurations which do not contain tachyonic regions and so has greater physical relevance. The disks of this family have an inner edge and a well-defined behavior at infinity. In the limit of a negligible disk mass one obtains the solution for an accretion (test-particle) disk.
Lemos José P. S.
Letelier Patricio S.
No associations
LandOfFree
Exact general relativistic thin disks around black holes 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 Exact general relativistic thin disks around black holes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exact general relativistic thin disks around black holes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1680911