What question did this study set out to answer?

The aim is to investigate how scalar hair affects the dynamics of test particles in black holes and their implications for orbital stability.

Orbital dynamics and frequency spectra around a black hole with scalar hair

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Examines orbital behavior in black holes with scalar hair, revealing insights into stability and potential observations.

The aim is to investigate how scalar hair affects the dynamics of test particles in black holes and their implications for orbital stability.
Developed a framework expanding the Schwarzschild solution with scalar-tensor modifications.
Calculated conserved quantities such as energy and angular momentum through integration techniques.
Conducted numerical simulations of particle trajectories and analyzed orbital frequencies.
Examined the stability of circular orbits and the characteristics of innermost stable circular orbits (ISCOs).
Increasing scalar charge and coupling constants deepens the effective potential and reduces ISCO radii.
Lower angular momentum is needed for stable orbits in the presence of scalar hair.
Simulated orbits are broader and more distinct than those predicted by the Schwarzschild model.
Frequency of periastron precession decreases with increasing scalar hair, suggesting observable effects in quasi-periodic oscillations.

Zulqarnain et al. (2026) studied this question.

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