Studying the optical depth behavior of parametrized deceleration parameter in non-flat universe

Abstract

In this work, we have assumed the non-flat FRW model of the universe. We probed the optical depth behavior of a few cosmological models, including the deceleration parameter’s parametrized form. We have considered ten such models and carried out a qualitative analysis graphically. We found that these particular lensing phenomena depend greatly on the various parametrization forms of deceleration parameter in the cosmological models. Then we compared these models to each other as well as with [Formula: see text]CDM model.