A brief study of dark energy accretion onto Schwarzschild black hole: Biswas-Roy-Biswas–type redshift parameterization is chosen

Abstract In this letter, we have considered accretion of a particular type of dark energy model onto a Schwarzschild-type black hole. Before using the model, the free parameters of the dark energy model have been constrained with differential ages data. A narrow peak on top of a wide plateau in two parameters’ distributions indicates a well-defined best-fit value embedded within a broad region of near-degenerate solutions. This means that the data strongly favour one specific parameter value but also permit a wide range with comparable likelihood. Physically, it reflects that the dark energy dynamics are locally constrained yet globally insensitive to small parameter variations. An increasing since z = 3 signifies that black holes have continuously grown through accretion and mergers within the standard hierarchical formation scenario. The precise rate of this growth depends on the radiative efficiency ϵ , the effective accretion parameter , and the cumulative impact of merger events.