Pulsar glitches from quantum vortex networks | Scientific Reports
2024年4月3日 · Neutron stars or pulsars are very rapidly rotating compact stars with extremely high density. One of the unsolved long-standing problems of these enigmatic celestial bodies is the origin of...
Quantum Vortex Mystery: Unveiling the Twisted Roots of Neutron Stars …
2024年7月2日 · Re-analyzing 533 up-to-date data sets from observations of rapidly spinning neutron stars, called pulsars, a team of physicists found that their proposed quantum vortex network naturally aligns with calculations on the power law behavior of glitch energies without needing extra tuning, unlike past models.
Physics - Supersolids Shown to Host Vortices
4 天之前 · Some theories predict that neutron stars have a supersolid layer and that vortices within this layer are what drive observed speedups, called glitches, in the rotation rate of neutron stars. Ferlaino hopes to build in her lab a neutron-star analogue that could test this vortex–glitch connection. –Michael Schirber
Simulating pulsar glitches: an N-body solver for superfluid vortex ...
2020年8月29日 · Superfluid vortex avalanches have long been suggested as a mechanism for pulsar glitches, but the existence of avalanche behaviour even in simplified models of neutron stars has not been demonstrated in systems with more than ≈100 vortices. We have written a 2D N-body solver based on the vortex filament model, including dissipation.
[astro-ph/0102343] Superfluid vortices in neutron stars - arXiv.org
2001年2月20日 · A microscopic, quantum mechanical model for neutron vortices in the crust of a neutron star is presented. After a brief introduction to the Bogoliubov- de Gennes equations, which form the basis for our calculations, we present results for density distributions, vortex core sizes and vortex energies, both for an isolated neutron vortex and for ...
Vortex creep heating vs. dark matter heating in neutron stars
2024年1月1日 · In this work, as an example of such an internal heating source, we consider the frictional heating caused by the creep motion of neutron superfluid vortex lines in the neutron star crust.
Vortex Pinning and Dynamics in the Neutron Star Crust
2016年11月30日 · The nature of the interaction between superfluid vortices and the neutron star crust, conjectured by Anderson and Itoh in 1975 to be at the heart vortex creep and the cause of glitches, has been a long-standing question in astrophysics. Using a qualitatively new approach, we follow the dynamics as superfluid vortices move in response to the ...
Vortex Pinning in Neutron Stars - NASA/ADS
Vortex Pinning in Neutron Stars. Epstein, Richard I. ; Baym, Gordon. The rotating superfluid in the inner crust of a neutron star is threaded by vortex lines. These lines tend to pin to the solid crust by dint of their interaction with nuclei. Here this interaction is examined.
Modelling Pulsar Glitches: The Hydrodynamics of Superfluid Vortex …
The dynamics of quantised vorticity in neutron star interiors is at the heart of most pulsar glitch models. However, the large number of vortices (up to ≈10 13) involved in a glitch and the huge disparity in scales between the femtometre scale of vortex cores and the kilometre scale of the star makes quantum dynamical simulations of the ...
(PDF) Vortex pinning in neutron stars - ResearchGate
1988年4月30日 · We present the first realistic and fully consistent model to study the vortex–nucleus interaction in the inner crust of a rotating neutron star, where a gas of unbound superfluid neutrons ...