$f$-mode oscillations of hybrid stars with pasta construction

TL;DR

This paper studies the nonradial $f$-mode oscillations of hybrid neutron stars with pasta-phase transitions, confirming universal relations and discussing observational prospects in full general relativity.

Contribution

It introduces hybrid equations of state with pasta phases and verifies universal relations for these stars in full general relativity.

Findings

Universal relations hold for hybrid stars with pasta phases.

Confirmation of $f$-mode oscillation characteristics in hybrid stars.

Discussion of observational prospects for detecting these oscillations.

Abstract

We investigate nonradial $f$-mode oscillations of hybrid neutron stars in full general relativity, employing hybrid equations of state describing a nuclear outer core and a pasta-phase transition to a quark-matter core. The validity of various universal relations is confirmed for those stars. Prospects of observations are also discussed.