The stochastic gravitational wave background from magnetars

TL;DR

This paper models the stochastic gravitational wave background generated by magnetars, considering their magnetic field-induced deformations, to understand how gravitational wave observations can inform magnetar physics.

Contribution

It introduces a new framework for estimating the stochastic gravitational wave background from all magnetars in the universe, incorporating various magnetic field configurations.

Findings

Estimates the gravitational wave background from magnetars based on magnetic deformation models.

Shows how gravitational wave observations can constrain magnetar magnetic field configurations.

Provides a method to connect gravitational wave data with magnetar physical properties.

Abstract

Magnetars have already been a potential candidate as gravitational wave sources that could be detected by current and future terrestrial as well as ground based gravitational wave detectors. In this article, we focus on the gravitational wave emission from the distorted rotating neutron stars. The deformation is assumed to be symmetric around an axis that is perpendicular to the rotation axis. The form is applied in the context of a neutron star whose magnetic field has been deformed on its own. By introducing the effects from all magnetars in the Universe, based on various proposed magnetic field configurations, such as poloidal, toroidal; stochastic gravitational wave background (SGWB) can be generated. We choose to figure out exactly how the observations of the stochastic gravitational-wave background should be used to understand much more about physics correlated with the magnetar behaviour, based on the restriction on the eccentricity of the magnetar.