Quasi-periodic oscillations in rotating and deformed space-times
Boshkayev K. Konysbayev T. Kurmanov Y. Muccino M. Quevedo H.
1 July 2024Oxford University Press
Monthly Notices of the Royal Astronomical Society
2024#531Issue 43876 - 3887 pp.
Quasi-periodic oscillation (QPOs) analysis is important for understanding the dynamical behaviour of many astrophysical objects during transient events such as gamma-ray bursts, solar flares, magnetar flares, and fast radio bursts. In this paper, we analyse QPO data in low-mass X-ray binary (LMXB) systems, using the Lense-Thirring, Kerr, and approximate Zipoy-Voorhees metrics. We demonstrate that the inclusion of spin and quadrupole parameters modifies the well-established results for the fundamental frequencies in the Schwarzschild space-time. We interpret the QPO data within the framework of the standard relativistic precession model, allowing us to infer the values of the mass, spin, and quadrupole parameters of neutron stars in LMXBs. We explore recent QPO data sets from eight distinct LMXBs, assess their optimal parameters, and compare our findings with results in the existing literature. Finally, we discuss the astrophysical implications of our findings.
accretion, accretion discs , gravitation , stars: black holes , stars: neutron , X-rays: binaries
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National Nanotechnology Laboratory of Open Type, Almaty, 050040, Kazakhstan
Al-Farabi Kazakh National University, Al-Farabi avenue 71, Almaty, 050040, Kazakhstan
Institute of Nuclear Physics, Ibra gimova 1, Almaty, 050032, Kazakhstan
International Engineering Technological University, 93G/5 Al-Farabi avenue, Almaty, 050060, Kazakhstan
Università di Camerino, Via Madonna delle Carceri 9, Camerino, I-62032, Italy
Instituto de Ciencias Nucleares, Universidad Nacional Autònoma de Mèxico, Mexico
Dipartimento di Fisica and Icra, Università di Roma La Sapienza, Roma, Italy
National Nanotechnology Laboratory of Open Type
Al-Farabi Kazakh National University
Institute of Nuclear Physics
International Engineering Technological University
Università di Camerino
Instituto de Ciencias Nucleares
Dipartimento di Fisica and Icra
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