Causes and Consequences of Magnetic Field Changes in Neutron Stars

TL;DR

This paper explores how quantum fluid properties in neutron star cores influence magnetic field evolution and compares model predictions with observations of various pulsar types, finding no current conflicts.

Contribution

It presents a model linking neutron star magnetic field evolution to their spin dynamics, aligning predictions with observed pulsar behaviors.

Findings

Model predicts magnetic field evolution consistent with observations.

No conflicts found between theory and observed pulsar properties.

Provides insights into pulsar glitches and spin-down ages.

Abstract

Because of the quantum fluid properties of a neutron star core's neutrons and protons, its magnetic field is expected to be coupled strongly to its spin. This predicts a simple evolution of the surface-field of such stars as they spin down or, less commonly, are spun up. Consequences and comparisons with observations are given for properties of solitary spinning down pulsars, including their glitches and spin-down ages, X-ray pulsars, and the formation and pulse characteristics of Millisecond Pulsars. For none of these is there a present conflict between model predictions and what has been observed.