MOVING VORTEX IN A RELATIVISTIC IRROTATIONAL PERFECT FLUID OR SUPERFLUID

Irrotational relativistic vortex configurations in uniform subsonic mo tion with respect to a surrounding perfect fluid are analyzed for the purpose of application to superfluid layers in neutron stars. Asymptot ic solutions are found by asymptotically expanding the flow equation a t large distances from the vortex core and then by solving it order by order. The asymptotic effective tension and energy density that are n eeded for an averaged macroscopic description are thus obtained as fun ctions of the vortex velocity, the vortex circulation, the asymptotic chemical potential, and of parameters depending on the equation of sta te. [S0556-2821(97)06220-6].