What question did this study set out to answer?

This research aims to understand how the parameters of Einstein–Gauss–Bonnet gravity influence the behavior of accretion disks around black holes.

Energetics of accretion disk around black holes in Einstein–Gauss–Bonnet gravity

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Investigating the effects of gravitational parameters on accretion disks and black hole properties, indicating modified gravity signatures.

This research aims to understand how the parameters of Einstein–Gauss–Bonnet gravity influence the behavior of accretion disks around black holes.
Analyzed a static, spherically symmetric black hole in Einstein–Gauss–Bonnet gravity.
Computed properties of the event horizon and innermost stable circular orbit.
Used the Novikov–Thorne thin disk model to evaluate flux, temperature, and spectrum of the accretion disk.
The parameters kappa and Q significantly affect the thermal properties of the accretion disk.
Changes in kappa and Q impact the radiation efficiency of the disk.
The effects of kappa and Q can mimic the spin effects seen in Kerr black holes, showing potential degeneracy.

Ergashov et al. (2026) studied this question.

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Investigating the effects of gravitational parameters on accretion disks and black hole properties, indicating modified gravity signatures.