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Vortex distribution in neutron stars: gravitational effects

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arxiv hep-th/9704053 v1 pith:SWEIEX4I submitted 1997-04-07 hep-th astro-phgr-qc

Vortex distribution in neutron stars: gravitational effects

classification hep-th astro-phgr-qc
keywords neutronvortexdistributiondraggingeffecteffectsfluidframe
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Neutron stars are supposed to be mainly formed by a neutron superfluid. The angular momentum is given by the vortex array within the fluid, and a good account of the observable effects is determined by its coupling with the crust. In this article we show that the gravitational field introduces important modifications in the vortex distribution and shape. The inertial frame dragging on the quantum fluid produces a decrease in the vortex density, which for realistic models is in the order of 15%. This effect is relevant for neutron star rotation models and can provide a good framework for checking the quantum effect of the frame dragging.

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