On non-monotonic orbital velocity profiles around rapidly rotating Kerr-(anti)de Sitter black holes: acomment to the recently published results
arXiv:0709.0803
Abstract
Critical discussion of the recently published results [Muller, A. and Aschenbach, B. 2007 Class. Quantum Grav. 24, p. 2637; arXiv:0704.3963] on the non-monotonic orbital velocity profiles of the Keplerian motion of test particles and l = const motion of test perfect fluid around K(a)dS black holes is given, and the discrepancies concerned the existence of the non-monotonicity in dependence of the spacetime parameters are corrected. Moreover a new non-monotonic behaviour of the Keplerian orbital velocity in the Kerr-antide Sitter spacetimes is highlighted.
arXiv comment10 pages, 4 figures, submitted to Classical and Quantum Gravity
References in corpus (4)
- Equatorial circular orbits in the Kerr-de Sitter spacetimes
- Measuring mass and angular momentum of black holes with high-frequency quasi-periodic oscillations
- The Aschenbach effect: unexpected topology changes in motion of particles and fluids orbiting rapidly rotating Kerr black holes
- Non-monotonic orbital velocity profiles around rapidly rotating Kerr-(anti-)de Sitter black holes