Gravitational radiation from collapsing magnetized dust

TL;DR

This paper investigates how magnetic fields affect gravitational waves emitted during the collapse of a dust sphere, revealing that magnetic field strength and distribution significantly influence the gravitational wave energy output.

Contribution

It provides new insights into the impact of magnetic fields on gravitational wave emission during dust collapse, highlighting the importance of magnetic field configurations.

Findings

Energy emission weakly depends on matter perturbations

Strong dependence of gravitational waves on magnetic field strength and distribution

Potential for gravitational wave output to vary by an order of magnitude

Abstract

In this article we study the influence of magnetic fields on the axial gravitational waves emitted during the collapse of a homogeneous dust sphere. We found that while the energy emitted depends weakly on the initial matter perturbations it has strong dependence on the strength and the distribution of the magnetic field perturbations. The gravitational wave output of such a collapse can be up to an order of magnitude larger or smaller calling for detailed numerical 3D studies of collapsing magnetized configurations.