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Abstract
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Regular black holes are crucially important as approaches to solving the singularity
problem, and in this paper, the accretion disk of Bardeen and Hayward models has been
studied. For this purpose, we calculated the physical properties of black holes, including
radiant energy, luminosity derivative, temperature, and conversion efficiency of accretion
mass into radiation. The obtained results show that the nonzero-free parameters of
regular black holes cause the radius of the innermost stable circular orbit of the disk
to shift to smaller values. As a result of this displacement, we saw an increase in the
profiles of radiant energy, luminosity derivative, and temperature. We also find that
Bardeen and Hayward’s black holes are more efficient in converting mass to radiation
than Schwarzschild. Finally, we compared the free parameter of these two black holes
with the spin of the rotating black hole and found that the Bardeen and Hayward black
holes can mimic the slowly rotating Kerr black hole.
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