How ``free'' are free neutrons in neutron-star crusts and what does it imply for pulsar glitches?
Abstract
The neutron superfluid permeating the inner crust of mature neutron stars is expected to play a key role in various astrophysical phenomena like pulsar glitches. Despite the absence of viscous drag, the neutron superfluid can still be coupled to the solid crust due to non-dissipative entrainment effects. Entrainment challenges the interpretation of pulsar glitches and suggests that a revision of the interpretation of other observed neutron-star phenomena might be necessary.
- Publication:
-
Neutron Stars and Pulsars: Challenges and Opportunities after 80 years
- Pub Date:
- March 2013
- DOI:
- 10.1017/S1743921312023198
- arXiv:
- arXiv:1301.2432
- Bibcode:
- 2013IAUS..291...73C
- Keywords:
-
- stars: neutron;
- dense matter;
- equation of state;
- gravitation;
- hydrodynamics;
- stellar dynamics;
- (stars:) pulsars: general;
- stars: rotation;
- Astrophysics - High Energy Astrophysical Phenomena;
- Nuclear Theory
- E-Print:
- Proceedings of IAUS 291 "Neutron Stars and Pulsars: Challenges and Opportunities after 80 years", J. van Leeuwen (ed.)