Shearfree Spherically Symmetric Fluid Models

TL;DR

This paper develops five exact shearfree, spherically symmetric fluid models of gravitational collapse, analyzing conditions on mass and pressure, with some models satisfying Darmois junction conditions.

Contribution

It introduces five new exact analytical models of shearfree spherically symmetric collapsing fluids, exploring different conditions on mass function and pressure.

Findings

Five exact models of shearfree collapse derived

Some models satisfy Darmois junction conditions

Models provide insights into gravitational collapse dynamics

Abstract

We try to find some exact analytical models of spherically symmetric spacetime of collapsing fluid under shearfree condition. We consider two types of solutions: one is to impose a condition on the mass function while the other is to restrict the pressure. We obtain totally of five exact models, and some of them satisfy the Darmois conditions.