Generalized Vaidya Solutions

TL;DR

This paper introduces a broad class of spherically symmetric solutions to Einstein's equations, encompassing many known solutions like Vaidya, monopole, de Sitter, and charged cases, thus unifying various models of Type II fluid.

Contribution

It presents a generalized family of solutions to Einstein's equations that unify and extend many existing spherically symmetric solutions involving Type II fluid.

Findings

Includes most known solutions as special cases

Provides a unified framework for spherically symmetric solutions

Enhances understanding of Einstein field equations with Type II fluid

Abstract

A large family of solutions, representing, in general, spherically symmetric Type II fluid, is presented, which includes most of the known solutions to the Einstein field equations, such as, the monopole-de Sitter-charged Vaidya ones.