Testing the black hole no-hair theorem at the galactic center: Perturbing effects of stars in the surrounding cluster
arXiv:1106.5056 · doi:10.1088/0264-9381/28/22/225029
Abstract
Observations of the precessing orbits of stars very near the massive black hole in the galactic center could provide measurements of the spin and quadrupole moment of the hole and thereby test the no-hair theorem of general relativity. Since the galactic center is likely to be populated by a distribution of stars and small black holes, their gravitational interactions will perturb the orbit of any given star. We estimate the effects of such perturbations using analytic orbital perturbation theory, and show that for a range of possible stellar distributions, and for an observed star sufficiently close to the black hole, the relativistic spin and quadrupole effects will be larger than the effects of stellar cluster perturbations. Our results are consistent those from recent numerical N-body simulations by Merritt et al.
17 pages, 2 figures, submitted to Classical and Quantum Gravity
References in corpus (3)
Cited by in corpus (49)
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