# Gravitational wave signatures of dark matter cores in binary neutron star mergers by using numerical simulations

## TL;DR

This paper uses numerical simulations to identify gravitational wave signatures of dark matter cores inside neutron stars during mergers, potentially enabling constraints on dark matter content through gravitational wave observations.

## Contribution

It introduces the first detailed numerical analysis of gravitational waves from neutron star mergers with dark matter cores, highlighting distinguishable post-merger features.

## Key findings

- Detection of a strong m=1 mode in post-merger waveforms
- Dark matter cores produce unique gravitational wave imprints
- Potential to constrain dark matter content in neutron stars

## Abstract

Recent detections by the gravitational wave facilities LIGO/Virgo have opened a window to study the internal structure of neutron stars through the gravitational waves emitted during their coalescence. In this work we explore, through numerical simulations, the gravitational radiation produced by the merger of binary neutron stars with dark matter particles trapped on their interior, focusing on distinguishable imprints produced by these dark matter cores. Our results reveal the presence of a strong m = 1 mode in the waveforms during the post-merger stage, together with other relevant features. Comparison of our results with observations might allow us to constraint the amount of dark matter in the interior of neutron star.