Gravitational Field of Radiating Cosmic String

TL;DR

This paper derives exact solutions to Einstein's equations for a radiating cosmic string, analyzing how outgoing radiation influences the spacetime structure and the back reaction effects on the string.

Contribution

It presents a new class of exact solutions for a radiating cosmic string, incorporating outgoing radiation into the spacetime geometry.

Findings

Radiation affects the spacetime around cosmic strings.

Exact solutions illustrate the back reaction effects.

Model can be used to study cosmic string evolution with radiation.

Abstract

We examine the Einstein equation with the energy-momentum tensors which correspond to an infinite line string of finite radius plus an outgoing radiation field. It is used to see the effect of the radiation field on the spacetime of a cosmic string. We make some assumptions about the metric coefficients and find a class of exact solution. The result can be applied to study the back reaction on a radiating cosmic string.