The pasta structure in the hadron-quark phase transition and the effects on magnetized compact stars

TL;DR

This paper investigates how the quark-hadron phase transition, especially the pasta structures, influences the internal magnetic field distribution in magnetized hybrid stars, affecting their astrophysical behaviors.

Contribution

It introduces a detailed model of pasta structures in the quark-hadron mixed phase and examines their impact on magnetic field distribution in magnetized compact stars.

Findings

Discontinuous magnetic field distribution in hybrid stars due to phase transition

Finite-size effects lead to non-uniform pasta structures

Magnetic field distributions influence cooling processes in stars

Abstract

We report the effects of quark-hadron phase transition on the structures of general relativistic stars with purely toroidal magnetic field. For the mixed phase, we take into account of the finite-size effects, which lead to non-uniform "Pasta" structures. Our study is based on axisymetric and stationary formalism including purely toroidal magnetic field. For hybrid stars, we find the characteristic distribution of magnetic field, which has a discontinuity originated in the quark-hadron mixed phase. These distributions of magnetic field will change astrophysical phenomena, such as cooling processes.