Spin-down of compact stars and energy release of a first-order phase transition

TL;DR

This paper investigates the energy release during a first-order deconfinement phase transition in spinning neutron stars, focusing on latent heat release and its impact on stellar heating.

Contribution

It models the energy release of a first-order phase transition in rotating hybrid stars with mixed phases, providing a self-consistent calculation of heating luminosity.

Findings

Quantifies latent heat release per baryon during phase transition

Calculates heating luminosity based on star rotation and EOS of mixed phase

Provides a framework for understanding energy release in spinning neutron stars

Abstract

The deconfinement phase transition from hadronic matter to quark matter can continuously occur during spins down of neutron stars. It will lead to the release of latent heat if the transition is the first-order one. We have investigated the energy release of such deconfinement phase transition for rotating hybrid stars model which include mixed phase of hadronic matter and quark matter. The release of latent heat per baryon is calculated through studying a randomly process of infinitesimal compressing. Finally, we can self-consistently get the heating luminosity of deconfinement phase transition by imputing the EOS of mixed phase, and based on the equation of rotation structure of stars.