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

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.