Can I read Research on High-frequency Quasi-periodic Oscillations in Black Bounce-type Spacetime on EtoBox?

Research on High-frequency Quasi-periodic Oscillations in Black Bounce-type Spacetime by Lu, Jianbo; Yang, Shining; Zhang, Yuying; Yang, Liu; Xu, Mou is a scholarly article available to read on EtoBox.

What is Research on High-frequency Quasi-periodic Oscillations in Black Bounce-type Spacetime about?

This paper investigates the high frequency quasi-periodic oscillations (HFQPOs) phenomenon around the black bounce-type (BBT) spacetime using the resonance models. We calculated the location of the innermost stable circular orbit (ISCO) for different types of celestial bodies, and derived the expression for the epicyclic frequencies of test particles. The results show that the BBT spacetime possesses unique observational characteristics, where the ordering of epicyclic frequencies varies with the regularization parameter $a$, enabling the excitation of low-order resonances and producing stronger observational signals. Using parametric and forced resonance models, we compared theoretical results with the observed 3:2 twin-peak HFQPOs in microquasars (GRO 1655-40, XTE 1550-564, GRS $1915+105$ ), analyzed the formation mechanisms of HFQPOs, constrained the parameters of the BBT model, and explored the possible types of celestial objects corresponding to microquasars. The study indicates that, certain parametric resonance conditions (e.g., $n=1, 2$) lead to traversable wormhole models in BBT that closely align with observations. And forced resonance corresponding to BH or wormhole mode

Author

Lu, Jianbo; Yang, Shining; Zhang, Yuying; Yang, Liu; Xu, Mou

Published

2024

Language

EN