Energy release from hadron-quark phase transition in neutron stars and the axial $w$-mode of gravitational waves

Abstract

Describing the hyperonic and quark phases of neutron stars with an isospin- and momentum-dependent effective interaction for the baryon octet and the MIT bag model, respectively, and using the Gibbs conditions to construct the mixed phase, we study the energy release due to the hadron-quark phase transition. Moreover, the frequency and damping time of the first axial $w$-mode of gravitational waves are studied for both hyperonic and hybrid stars. We find that the energy release is much more sensitive to the bag constant than the density dependence of the nuclear symmetry energy. Also, the frequency of the $w$-mode is found to be significantly different with or without the hadron-quark phase transition and depends strongly on the value of the bag constant. Effects of the density dependence of the nuclear symmetry energy become, however, important for large values of the bag constant that lead to higher hadron-quark transition densities.

17 pages including 7 figures

References in corpus (9)

• Cold Quark Matter
• Nuclear symmetry energy and its density slope at normal density extracted from global nucleon optical potentials
• Locating the inner edge of neutron star crust using terrestrial nuclear laboratory data
• Quark deconfinement transition in hyperonic matter
• Imprints of the QCD Phase Transition on the Spectrum of Gravitational Waves
• Constraining properties of rapidly rotating neutron stars using data from heavy-ion collisions
• Imprints of the nuclear symmetry energy on gravitational waves from the axial w-modes of neutron stars
• Quark matter imprint on Gravitational Waves from oscillating stars
• Gravitational wave background from neutron star phase transition

Cited by in corpus (6)

• GW170817 implications on the frequency and damping time of f-mode oscillations of neutron stars
• Constraining nuclear parameters using Gravitational waves from f-mode Oscillations in Neutron Stars
• Relativistic hybrid stars with sequential first-order phase transitions in light of multimessenger constraints
• Probing hadron-quark phase transition in twin stars using $f$-modes
• Spin-down induced quark-hadron phase transition in cold isolated neutron stars
• Influence of hyperon-hyperon interaction on the properties of neutron stars