SCALES 1st General Meeting - Superfluid Condensates in Astrophysics and Laboratory Experiments

Session

NS crust

25 Jun 2026, 14:30

Physics Department, University of Coimbra

Conveners

NS crust: 1st afternoon session

• Nils Andersson

17. Vortex Avalanches in Neutron Stars

Gary Liu (Department of Physics, Royal Holloway University of London)

25/06/2026, 14:30

Talk

Vortex avalanches are believed to cause pulsar glitches, with $10^{17}$ of quantum vortices transferring angular momentum from the inner-crust superfluid to the crust of a pulsar. In this presentation, we investigate the vortex avalanches using the Gross-Pitaevskii model for a system with more than $600$ vortices in a linearly spin-down superfluid. For the first time, we showed that during...

50. Entrainment effects in the inner crust and outer core of a neutron star

Nicolas CHAMEL (Université Libre de Bruxelles, Belgium)

25/06/2026, 15:20

Talk

The neutron superfluid present in the inner crust and outer core of a neutron star is coupled to the rest of the star due to nondissipative entrainment effects of different nature. Such effects could play an important role in the dynamics of the star. In the crust, entrainment effects are measured in terms of the superfluid density, i.e. the density of neutrons that contribute to the...

25. Reassessing pulsar braking indices: A vortex line–flux tube interaction model

erbil gügercinoğlu (Sabancı University)

25/06/2026, 15:45

Talk

An extended superfluid vortex line–magnetic flux tube interaction model is proposed for the magneto-thermal-rotational evolution of neutron stars. Applications to a sample of 12 radio pulsars with reliably measured braking indices demonstrate significantly improved agreement compared to the preexisting models. The effective moment of inertia change term for glitching pulsars is derived from...