Glitches in neutron stars with magnetically decoupled core

Abstract

The magnetically decoupled core model was proposed earlier as a way to solve the problem of inconsistency between the neutron star long-period precession and superfluid vortex pinning which is the base of most theories of pulsar glitches. It was assumed that the pinning takes place in the region of the neutron star core which, being magnetically decoupled, can rotate relative to the crust. In present work some aspects of the glitch spin-up stage in the framework of the proposed model are discussed. Estimated spin-up time-scales are compared with observational data. According to the estimations the Crab pulsar is likely posses a magnetically decoupling core region, while the results for the Vela pulsar is more controversial.

arXiv comment6 pages, 1 figure, submitted to the International Conference PhysicA.SPb/2019, Saint Petersburg, Russia, October 22-24, 2019

References in corpus (18)

• A study of 315 glitches in the rotation of 102 pulsars
• Models of Pulsar Glitches
• Precession of isolated neutron stars I: Effects of imperfect pinning
• Evolution of the Magnetic Field Structure of the Crab Pulsar
• Radiative Precession of an Isolated Neutron Star
• The largest glitch observed in the Crab pulsar
• Vortex Unpinning in Precessing Neutron Stars
• The Effect of Quantized Magnetic Flux Lines on the Dynamics of Superfluid Neutron Star Cores
• Pulsar state switching, timing noise and free precession
• Evolution of non-spherical pulsars with plasma-filled magnetospheres
• Comparing models of the periodic variations in spin-down and beam-width for PSR B1828-11
• Mode switching and oscillations in PSR B1828-11
• Incompatibility of long-period neutron star precession with creeping neutron vortices
• Monotonic and cyclic components of radio pulsars spin-down
• Thermally-Activated Post-Glitch Response of the Neutron Star Inner Crust and Core. I: Theory
• Persistent crust-core spin lag in neutron stars
• Implications of the Occurrence of Glitches in Pulsar Free Precession Candidates
• A possible way to reconcile long-period precession with vortex pinning in neutron stars