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Gravitational waves from extreme mass ratio inspirals in Kerr-MOG spacetimes

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arxiv 2408.10022 v1 pith:6ZB7ADOT submitted 2024-08-19 gr-qc hep-th

Xiongying Qiao , Zhong-Wu Xia , Qiyuan Pan , Hong Guo , Wei-Liang Qian , Jiliang Jing This is my paper · ORCID
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keywords gravitationalwaveformwaveformsemriextremeinspiralskerr-mogmass
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abstract

This work elaborates on a detailed analysis of the novel characteristics of gravitational waves (GWs) generated by extreme mass ratio inspirals (EMRIs) within the framework of modified gravity (MOG). Our study begins by exploring the geometrical and dynamical properties of the Kerr-MOG spacetime. We employ the numerical kludge (NK) method for waveform simulations and reveal that the parameter $\alpha$, representing deviations from general relativity (GR), significantly impacts the frequencies of geodesic orbits and, consequently, the EMRI waveforms. However, the waveform confusion problem remains mainly unresolved, posing a challenge in distinguishing between the underlying gravitational theories based on the observed EMRI waveforms. Notably, by incorporating the effects of radiation reaction, we observe a substantial reduction in the waveform overlap over time. This reduction could enhance our ability to discern between different waveforms over an extended period.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Extreme mass-ratio inspirals and extra dimensions: Insights from modified Teukolsky framework

    gr-qc 2025-07 conditional novelty 5.0 of 10

    A modified Teukolsky equation and the Dudley-Finley approximation give nearly the same LISA detectability bound for the braneworld tidal charge, with MTE mismatches growing faster for high-eccentricity EMRIs.

  2. Shadow constraints of charged black hole with scalar hair and gravitational waves from extreme mass ratio inspirals

    gr-qc 2025-06 conditional novelty 5.0 of 10

    EHT shadow data constrain the EMCS black hole charge and scalar hair to about 0.1 and 0.01 levels, while LISA EMRI waveforms could reach 0.01 and 0.0001 levels.

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