Thin accretion disk signatures in hybrid metric-Palatini gravity

Dyadina, Polina; Avdeev, Nikita

doi:10.1140/epjc/s10052-024-12465-7

Thin accretion disk signatures in hybrid metric-Palatini gravity

Aug 4, 2023

21 pages

Published in:

Eur.Phys.J.C 84 (2024) 1, 103,
Eur.Phys.J.C 84 (2024) 103

Published: Jan 30, 2024

e-Print:

2308.02375 [gr-qc]

DOI:

10.1140/epjc/s10052-024-12465-7

View in:

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Abstract: (Springer)

In the present work, accretion onto a static spherically symmetric black hole in the hybrid metric-Palatini gravity is considered. The Novikov–Thorne model for a relativistic thin accretion disk is used. The energy flux, temperature distribution, emission spectrum and energy conversion efficiency of accretion disks around such black holes are numerically calculated. A comparison with the results for a Schwarzschild black hole is made and conclusions about the viability of the model are drawn. As a result, it is obtained that the accretion disks around black holes in hybrid metric-Palatini gravity are colder and less luminous than in general relativity.

Note:

21 pages, 14 figures

energy: flux
emission: spectrum
symmetry: rotation
black hole: Schwarzschild
accretion
hybrid
temperature
general relativity
efficiency
signature

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