# Gravitational Wave Signatures of Highly Magnetized Neutron Stars

## TL;DR

This paper investigates how strong magnetic fields influence the gravitational wave signatures of neutron stars, focusing on their tidal deformability and quasi-normal modes, with implications for understanding their internal composition.

## Contribution

It provides new insights into the effects of magnetic fields on neutron star properties and gravitational wave signals, considering both nucleonic and hyperonic compositions.

## Key findings

- Magnetic fields significantly affect low-mass neutron star deformability.
- Nucleonic stars have lower fundamental mode frequencies than hyperonic stars.
- Star composition impacts the gravitational wave signatures more than magnetic field strength.

## Abstract

Motivated by the recent gravitational wave detection by the LIGO-VIRGO observatories, we study the Love number and dimensionless tidal polarizability of highly magnetized stars. We also investigate the fundamental quasi-normal mode of neutron stars subject to high magnetic fields. To perform our calculations we use the chaotic field approximation and consider both nucleonic and hyperonic stars. As far as the fundamental mode is concerned, we conclude that the role played by the constitution of the stars is far more relevant than the intensity of the magnetic field and if massive stars are considered, the ones constituted by nucleons only present frequencies somewhat lower than the ones with hyperonic cores, a feature that can be used to point out the real internal structure of neutron stars. Moreover, our studies clearly indicate that strong magnetic fields play a crucial role in the deformability of low mass neutron stars, with possible consequences on the interpretation of the detected gravitational waves signatures.