What can we extract from quasi-periodic oscillations?
Abstract
In light of the relativistic precession model, we present here detailed analyses, extending the ones performed in the Schwarzschild and Kerr spacetimes. We consider the kilohertz quasi-periodic oscillations in the Hartle-Thorne spacetime, which describes the gravitational field of a rotating and deformed object. We derive the analytic formulas for the epicyclic frequencies in the Hartel-Thorne spacetime and by means of these frequencies we interpret the kilohertz quasi-periodic oscillations of low-mass X-ray binaries of the atoll and Z - sources, on the basis of the relativistic precession model. Particularly we perform analyzes for Z -source: GX 5-1. We show that the quasi-periodic oscillations data can provide information on the parameters, namely, the mass, angular momentum and quadrupole moment of the compact objects in the low-mass X-ray binaries.
Keywords
Cite
@article{arxiv.1412.8214,
title = {What can we extract from quasi-periodic oscillations?},
author = {Kuantay Boshkayev and Donato Bini and Jorge Rueda and Andrea Geralico and Marco Muccino and Ivan Siutsou},
journal= {arXiv preprint arXiv:1412.8214},
year = {2014}
}
Comments
8 pages, 11 figures. arXiv admin note: text overlap with arXiv:1008.0088, arXiv:1201.6071 by other authors