# Constraining color flavor locked strange stars in the gravitational wave era

## TL;DR

This paper analyzes the non-radial pulsations of color flavor locked strange stars, showing their gravitational wave signatures can help constrain their internal equation of state and determine stellar parameters.

## Contribution

It provides a detailed relativistic analysis of the fundamental pulsation mode and derives empirical relations linking observable frequencies and damping times to stellar properties.

## Key findings

- Color flavor locked strange stars emit detectable gravitational waves.
- Empirical relations accurately connect oscillation frequency and damping time to stellar density and compactness.
- Observations can constrain the equation of state and determine star mass and radius.

## Abstract

We perform a detailed analysis of the fundamental mode of non-radial pulsations of color flavor locked strange stars. Solving the general relativistic equations for non-radial pulsations for an equation of state derived within the MIT bag model, we calculate the frequency and the gravitational damping time of the fundamental mode for all the parametrizations of the equation of state that lead to self-bound matter. Our results show that color flavor locked strange stars can emit gravitational radiation in the optimal range for present gravitational wave detectors and that it is possible to constrain the equation of state's parameters if the fundamental oscillation mode is observed and the stellar mass is determined. We also show that the $f$-mode frequency can be fitted as a function of the square root of the average stellar density $\sqrt{M/R^3}$ by a single linear relation that fits quite accurately the results for all parametrizations of the equation of state. All results for the damping time can also be fitted as a function of the compactness $M/R$ by a single empirical relation. Therefore, if a given compact object is identified as a color flavor locked strange star these two relations could be used to determine the mass and the radius from the knowledge of the frequency and the damping time of gravitational waves from the $f$ mode.