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Pulsar glitches: observations and physical interpretation.

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Pulsar glitches, sudden spin-ups in neutron stars, are explained by internal superfluid dynamics. This review connects observations and advanced models to understand neutron star interiors.

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Area of Science:

  • Astrophysics
  • Neutron Star Physics
  • Pulsar Astronomy

Background:

  • Pulsar glitches, sudden spin frequency increases in neutron stars, remain a long-standing astrophysical puzzle.
  • The prevailing theory links glitches to the dynamics of the neutron star's interior, specifically interactions involving the neutron superfluid.

Purpose of the Study:

  • To review current understanding of pulsar glitch observations and their connection to neutron star interior physics.
  • To bridge observational data and theoretical models for a comprehensive interpretation of glitch phenomena.

Main Methods:

  • Summarization of observational data on pulsar glitches and post-glitch relaxation timescales.
  • Analysis of advanced theoretical models incorporating neutron star crust structure and the equation of state for dense matter.
  • Connecting microphysical parameters to observable glitch properties.

Main Results:

  • Observational data, including long post-glitch relaxation times, support the superfluid dynamics model.
  • Advanced models integrating neutron star physics can constrain internal properties.

Conclusions:

  • Pulsar glitch observations provide powerful constraints on the internal structure and composition of neutron stars.
  • Further integration of observational data with sophisticated theoretical models is crucial for advancing neutron star physics.