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Accretion disks around a static black hole in f(R) gravity

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Abstract

We provide a description of a thin accretion disk for a static spherically symmetric black holes in f(R) gravity. In this regard, we first study the horizons of black holes in f(R) gravity. The equation of motion and effective potential are also computed which eventually leads to possible existence of innermost circular orbits of accretion disk. We derive the specific energy, specific angular momentum and angular velocity of the particles moving in circular orbits also. A comparative study of various parameters is also presented. The locations of the event horizon, cosmological horizon, innermost and outermost stable circular orbits are also pointed out.

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Authors and Affiliations

  1. Faculty of Technology and Mining, Yasouj University, Choram, 75761-59836, Iran

    Saheb Soroushfar

  2. Department of Physics, K.L.S. College, Nawada, A Constituent Unit of Magadh University, Bodh-Gaya, 805110, India

    Sudhaker Upadhyay

  3. Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, Maharashtra, 411007, India

    Sudhaker Upadhyay

Authors
  1. Saheb Soroushfar
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  2. Sudhaker Upadhyay
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Correspondence to Sudhaker Upadhyay.

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Soroushfar, S., Upadhyay, S. Accretion disks around a static black hole in f(R) gravity. Eur. Phys. J. Plus 135, 338 (2020). https://doi.org/10.1140/epjp/s13360-020-00329-4

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  • DOI: https://doi.org/10.1140/epjp/s13360-020-00329-4

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