On privileged stationary observers in the Kerr-de Sitter geometry

@inproceedings{43210,
   author = {Petrásek, Martin and Hledík, Stanislav},
   address = {Opava},
   booktitle = {Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars},
   keywords = {Black hole, Kerr geometry, Kerr-de Sitter geometry, stationary observers},
   language = {eng},
   location = {Opava},
   isbn = {978-80-7248-419-5},
   pages = {193-200},
   publisher = {Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky},
   title = {On privileged stationary observers in the Kerr-de Sitter geometry},
   year = {2007}
}

TY  - JOUR
ID  - 43210
AU  - Petrásek, Martin - Hledík, Stanislav
PY  - 2007
TI  - On privileged stationary observers in the Kerr-de Sitter geometry
PB  - Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
CY  - Opava
SN  - 9788072484195
KW  - Black hole, Kerr geometry, Kerr-de Sitter geometry, stationary observers
N2  - We focus on main differences between stationary frames in the Kerr geometry and the Kerr-de Sitter geometry. This comparison leads to new solutions on the symmetry axis and in the equatorial plane. This solution can clearly be described and physically interpreted. The most interesting is the case of freely falling stationary observers on the symmetry axis. We found a solution which can show that rotating supermassive black holes (not necessary fast rotating) could differ in a certain way from the same bodies for which the present value of the cosmological constant is not included. We show that an interesting family of "freely falling stationary observers" can be found.
ER  - 

PETRÁSEK, Martin and Stanislav HLEDÍK. On privileged stationary observers in the Kerr-de Sitter geometry. In \textit{Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars}. Opava: Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky, 2007, p.~193-200. ISBN~978-80-7248-419-5.