Moving vortex in relativistic irrotational perfect fluid or superfluid

Details Moving vortex in relativistic irrotational perfect fluid or superfluid Moving vortex in relativistic irrotational perfect fluid or superfluid

1997-09-11

arxiv.org/abs/astro-ph/9709090v1

Phys.Rev. D56 (1997) 6673-6683

Astronomy and Astrophysics

Astrophysics

19 pages, RevTeX, no figure; to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.56.6673

Irrotational relativistic vortex configurations in uniform subsonic motion with respect to a surrounding perfect fluid are analysed for the purpose of application to superfluid layers in neutron stars. Asymptotic solutions are found by asymptotically expanding the flow equation at large distances from the vortex core and then by solving it order by order. The asymptotic effective tension and energy density that are needed for an averaged macroscopic description are thus obtained as functions of the vortex velocity, the vortex circulation, the asymptotic chemical potential and of parameters depending on the equation of state.

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