Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-04-14
Mod.Phys.Lett.A20:561,2005
Astronomy and Astrophysics
Astrophysics
15 pages, 4 figures, invited paper
Scientific paper
10.1142/S0217732305016865
Surprisingly, the relict cosmological constant has a crucial influence on properties of accretion discs orbiting black holes in quasars and active galactic nuclei. We show it by considering basic properties of both the geometrically thin and thick accretion discs in the Kerr-de Sitter black-hole (naked-singularity) spacetimes. Both thin and thick discs must have an outer edge allowing outflow of matter into the outer space, located nearby the so called static radius, where the gravitational attraction of a black hole is balanced by the cosmological repulsion. Jets produced by thick discs can be significantly collimated after crossing the static radius. Extension of discs in quasars is comparable with extension of the associated galaxies, indicating a possibility that the relict cosmological constant puts an upper limit on extension of galaxies.
No associations
LandOfFree
Influence of the relict cosmological constant on accretion discs 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 Influence of the relict cosmological constant on accretion discs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Influence of the relict cosmological constant on accretion discs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-652314