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arXiv · 2305.12323

Constraints on the rotating self-dual black hole with quasi-periodic oscillations

Cheng Liu·Haiguang Xu·Hoongwah Siew·Tao Zhu·Qiang Wu·Yuanyuan Zhao
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Abstract

An impressive feature of loop quantum gravity (LQG) is that it can elegantly resolve both the big bang and black hole singularities. By using the Newman-Janis algorithm, a regular and effective rotating self-dual black hole(SDBH) metric could be constructed, which alters the Kerr geometry with a polymeric function $P$ from the quantum effects of LQG geometry. In this paper, we investigate its impact on the frequency characteristics of the X-ray quasi-periodic oscillations(QPOs) from 5 X-ray binaries and contrast it with the existing results of the orbital, periastron precession and nodal precession frequencies within the relativistic precession model. We apply a Monte Carlo Markov Chain (MCMC) simulation to examine the possible LQG effects on the X-ray QPOs. We found that the best constraint result for the rotating self-dual geometry from LQG came from the QPOs of X-ray binary GRO J1655-40, which establish an upper bound on the polymeric function $P$ less than $6.17\times 10^{-3}$ at 95\% confidence level. This bound leads to a restriction on the polymeric parameter $\delta$ of LQG to be 0.67.

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Cheng Liu, Haiguang Xu, Hoongwah Siew, Tao Zhu, Qiang Wu, Yuanyuan Zhao. 2023-05-21. Constraints on the rotating self-dual black hole with quasi-periodic oscillations. https://doi.org/10.1088/1475-7516%2F2023%2F11%2F096

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