Accretion in a Hybrid Metric-Palatini f(R)-Gravity onto Spherically Symmetric Black Holes

Abstract

In this work, accretion onto spherically symmetric black hole in hybrid metric-Palatini \(f(R)\)-gravity was studied within the framework of the Novikov–Thorn model. The average energy flux from the disk surface was numerically obtained for two cases: \(V = 0\) and \(V = - \frac{{{{\mu }^{2}}}}{2}{{\phi }^{2}} + \frac{\zeta }{4}{{\phi }^{4}}\). We also note that in each considered case, the prediction of the theory for this quantity are compared with similar result for the Schwarzschild black hole.