Central compact objects in magnetic lethargy

TL;DR

This paper explores how buried magnetic fields in young neutron stars, known as Central Compact Objects, influence their surface temperature, X-ray flux, and luminosity, highlighting the effects of post-supernova accretion.

Contribution

It introduces a scenario where magnetic fields are buried during hypercritical accretion, affecting observable properties of Central Compact Objects.

Findings

Magnetic burial impacts surface temperature anisotropies.

Buried fields influence X-ray flux and pulsed fraction.

Implications for neutron star surface emission models.

Abstract

Central Compact Objects are peculiar young neutron stars, with very low external magnetic fields combined with high fluxes in the X-ray band and surface temperature anisotropies. However, in their crust the magnetic field can be strong, result of its burial during a short post-supernova hypercritical accretion episode. The implications of this latter scenario for the temperature anisotropy, pulsed fraction and luminosity are discussed.