Type-I superconductivity and neutron star precession

Armen Sedrakian

doi:10.1103/PhysRevD.71.083003

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Type-I superconductivity and neutron star precession

Armen Sedrakian

DOI 10.1103/PhysRevD.71.083003 · Physical Review D

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Abstract

Type-I proton superconducting cores of neutron stars break up in a magnetic field into alternating domains of superconducting and normal fluids. We examine two channels of superfluid-normal fluid friction where (i) rotational vortices are decoupled from the nonsuperconducting domains and the interaction is due to the strong force between protons and neutrons; (ii) the nonsuperconducting domains are dynamically coupled to the vortices and the vortex motion generates transverse electric fields within them, causing electronic current flow and Ohmic dissipation. The obtained dissipation coefficients are consistent with the Eulerian precession of neutron stars.