EDP Sciences
Free access
Volume 370, Number 3, May II 2001
Page(s) 939 - 950
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20010160

A&A 370, 939-950 (2001)
DOI: 10.1051/0004-6361:20010160

Superfluid vortices in neutron stars

Ø. Elgarøy1 and F. V. De Blasio2

1  Institute of Theoretical Astrophysics, University of Oslo, Box 1029, 0315 Oslo, Norway
2  Department of Physics, University of Oslo, PO Box 1048, Blindern, 0316 Oslo, Norway

(Received 30 June 2000 / Accepted 20 December 2000)

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 the case when the vortex core overlaps with a cylindrical nucleus. Earlier results on the vortex core size are confirmed, indicating a much less dramatic variation of the vortex core size with density than predicted by the BCS formula.

Key words: dense matter -- pulsars: general -- stars: neutron -- stars: rotation

Offprint request: F. V. De Blasio, deblasio@alf.nbi.dk

© ESO 2001