Vortex Unpinning in Precessing Neutron Stars
arXiv:astro-ph/0108281 · doi:10.1046/j.1365-8711.2002.05726.x
Abstract
The neutron vortices thought to exist in the inner crust of a neutron star interact with nuclei and are expected to pin to the nuclear lattice. Evidence for long-period precession in pulsars, however, requires that pinning be negligible. We estimate the strength of vortex pinning and show that hydrodynamic forces present in a precessing star are likely sufficient to unpin all of the vortices of the inner crust. In the absence of precession, however, vortices could pin to the lattice with sufficient strength to explain the giant glitches observed in many radio pulsars.
5 pages, 2 figures
References in corpus (9)
- Pulsar Constraints on Neutron Star Structure and Equation of State
- Freely precessing neutron stars: Model and observations
- Precession of isolated neutron stars I: Effects of imperfect pinning
- Precession Interpretation of the Isolated Pulsar PSR B1828-11
- Evidence for Free Precession in the Pulsar B1642-03
- Vortex-nucleus interaction and pinning forces in neutron stars
- Magnetohydrodynamics in Superconducting-Superfluid Neutron Stars
- Observational constraints on the Internal Structure and Dynamics of the Vela Pulsar
- Crab Pulsar Photometry and the Signature of Free Precession
Cited by in corpus (38)
- Physics of Neutron Star Crusts
- Models of Pulsar Glitches
- Gravitational waves from instabilities in relativistic stars
- Constraining Hadronic Superfluidity with Neutron Star Precession
- Transitions between turbulent and laminar superfluid vorticity states in the outer core of a neutron star
- Precession of the Isolated Neutron Star PSR B1828-11
- Mesoscopic pinning forces in neutron star crusts
- Toroidal Magnetic Fields in Type II Superconducting Neutron Stars
- The Crustal Rigidity of a Neutron Star, and Implications for PSR 1828-11 and other Precession Candidates
- Gravitational wave emission from rotating superfluid neutron stars
- Quakes in Solid Quark Stars
- Quantum calculation of vortices in the inner crust of neutron stars
- Vortex-nucleus interaction in the inner crust of neutron stars
- A Cellular Automaton Model of Pulsar Glitches
- Precession of Isolated Neutron Stars II: Magnetic Fields and Type II Superconductivity
- Superfluid vortex unpinning as a coherent noise process, and the scale invariance of pulsar glitches
- Dynamics of Quantum Vorticity in a Random Potential
- Mode switching and oscillations in PSR B1828-11
- Electromagnetic Torques, Precession and Evolution of Magnetic Inclination of Pulsars
- Incompatibility of long-period neutron star precession with creeping neutron vortices
- Do superfluid instabilities prevent neutron star precession?
- Hydromagnetic and gravitomagnetic crust-core coupling in a precessing neutron star
- Thermally-Activated Post-Glitch Response of the Neutron Star Inner Crust and Core. I: Theory
- Tkachenko modes as sources of quasiperiodic pulsar spin variations
- GCRT J1745-3009: A precessing radio pulsar?
- Implications of the Occurrence of Glitches in Pulsar Free Precession Candidates
- An accretion disk model for periodic timing variations of pulsars
- Pinned vortex hopping in a neutron star crust
- Velocity-dependent energy gaps and dynamics of superfluid neutron stars
- Non-Axisymmetric Precession of Magnetars and Fast Radio Bursts
- On the free-precession candidate PSR B1828-11: Evidence for increasing deformation
- On the Peculiar Rotational Evolution of PSR B0950+08
- Searching for X-ray Variability in the Glitching Anomalous X-ray Pulsar 1E 1841-045 in Kes 73
- A possible way to reconcile long-period precession with vortex pinning in neutron stars
- Implications of magnetar non-precession
- Detectability of Gravitational Waves from SN 1987A
- Damping of Neutron Star Shear Modes by Superfluid Friction
- Glitches in neutron stars with magnetically decoupled core