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Thin accretion disk signatures in hybrid metric-Palatini gravity

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arxiv 2308.02375 v3 pith:IC3R23I6 submitted 2023-08-04 gr-qc

classification gr-qc
keywords accretionblackgravityhybridmetric-palatiniarounddiskdisks
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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.

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  1. Novel electrically charged wormhole, black hole and black bounce exact solutions in hybrid metric-Palatini gravity

    gr-qc 2024-12 conditional novelty 5.0 of 10

    Exact charged solutions in hybrid metric-Palatini gravity with zero scalar potential produce traversable wormholes, double-horizon black holes, black bounces, and infinite-horizon spacetimes.

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