Work

Exploring the accelerating black holes from the observations of quasi-periodic oscillations in X-ray binaries

Year: 2026

Type: article

Abstract: Black holes in dense astrophysical environments, such as globular clusters or in the vicinity of other massive objects, may possess accelerations. Such acceleration would modulate the characteristics of the quasi-periodic oscillations (QPOs) observed in X-ray black hole binaries. In this paper, we explore the influence of spin-aligned acceleration of a black hole on QPOs observed in X-ray binaries. For this purpose, we compute the fundamental frequencies arising from the motion of test particles around an accelerating (spin-aligned) black hole and apply the relativistic precession, parametric resonance, and forced resonance models to establish their correspondence with several observed QPOs of X-ray binaries (GRO J1655-40, XTE J1550-564, XTE J1859+226, GRS 1915+105, H1743-322, M82 X-1, and Sgr A $$^{*}$$ ∗ ). We then employ the Bayesian Markov-Chain Monte Carlo method to constrain the black hole parameters. Our results show no evidence for spin-aligned acceleration in any of the analyzed sources, suggesting that most of these X-ray binaries reside in isolated environments and therefore experience only small perturbations to the background spacetime geometries.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-026-15815-9

Authors: Hamza Rehman, Saddam Hussain, G. Abbas, Tao Zhu

Institutions: Khazar University, Zhejiang University of Technology, Islamia University of Bahawalpur

Language: English

Topic: Astrophysical Phenomena and Observations

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, National Key Research and Development Program of China, Natural Science Foundation of Zhejiang Province