Oscilaciones de estrellas h\'ibridas utilizando la aproximaci\'on de Cowling

TL;DR

This paper investigates the oscillation frequencies of hybrid stars with quark cores using the Cowling approximation, highlighting the impact of phase transitions on g modes.

Contribution

It provides oscillation mode frequencies for hybrid stars with various equations of state within the Cowling approximation, emphasizing the role of phase transitions.

Findings

g modes appear only with sharp phase transitions

Oscillation frequencies vary with different equations of state

Hybrid stars exhibit distinct oscillation signatures

Abstract

Within the framework of the Cowling approximation, we present the frequencies of the f (fundamental), p 1 (first pressure) and g (gravitational) of quadrupolar oscillation modes of compact objects constructed using different equations of state. Special attention will be put in hybrid stars, formed by a quark core and a hadronic envelope. In this context, g modes are only present if a sharp first order phase transition occurs between hadronic and quark phases.