Main parameters of neutron stars from quasi-periodic oscillations in low mass X-ray binaries [HEAP]

http://arxiv.org/abs/1604.02398


We investigate the kilohertz quasi-periodic oscillations of low-mass X-ray binaries within the Hartle-Thorne spacetime. On the basis the relativistic precession model we extract the total mass $M$, angular momentum $J$, and quadrupole moment $Q$ of a compact object in a low-mass X-ray binary by analyzing the data of the Z -source GX 5-1. In view of the recent neutron star model we compute the radius, angular velocity and other parameters of this source by imposing the observational and theoretical constraints on the mass-radius relation.

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K. Boshkayev, J. Rueda and M. Muccino
Mon, 11 Apr 16
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Comments: 8 pages, 5 figures, submitted to the Proceedings of the Fourteenth Marcel Grossman Meeting on General Relativity