Eur. Phys. J. Plus (2020) 135: 338
https://doi.org/10.1140/epjp/s13360-020-00329-4

Regular Article

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

¹ Faculty of Technology and Mining, Yasouj University, Choram, 75761-59836, Iran
² Department of Physics, K.L.S. College, Nawada, A Constituent Unit of Magadh University, Bodh-Gaya, 805110, India
³ Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, Maharashtra, 411007, India

^* e-mail: sudhakerupadhyay@gmail.com

Received: 18 December 2019
Accepted: 12 March 2020
Published online: 30 March 2020

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.