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Vortex structure of neutron stars with triplet neutron superfluidity

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The vortex structure of the “npe” phase of neutron stars with a 3P2 superfluid neutron condensate of Cooper pairs is discussed. It is shown that, as the star rotates, superfluid neutron vortex filaments described by a unitary ordering parameter develop in the “npe” phase. The entrainment of superconducting protons by the rotating superfluid neutrons is examined. The entrainment effect leads to the appearance of clusters of proton vortices around each neutron vortex and generates a magnetic field on the order of 1012 G. 3P2 neutron vortex filaments combine with quark semi-superfluid vortex filaments at the boundary of the “npe” and “CFL” phases. At the boundary of the “Aen” and “npe” phases, they combine with 1S0 neutron vortex filaments. In this way, a unified vortex structure is formed. The existence of this structure and its collective elastic oscillations explain the observed oscillations in the angular rotation velocity of pulsars.

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Authors and Affiliations

  1. Erevan State University, Yerevan, Armenia

    K. M. Shahabasyan & M. K. Shahabasyan

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  1. K. M. Shahabasyan
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  2. M. K. Shahabasyan
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Correspondence to K. M. Shahabasyan.

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Translated from Astrofizika Vol. 54 No. 3 pp. 483–493 (August 2011).

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Shahabasyan, K.M., Shahabasyan, M.K. Vortex structure of neutron stars with triplet neutron superfluidity. Astrophysics 54, 429–438 (2011). https://doi.org/10.1007/s10511-011-9193-6

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