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arxiv: 1301.7495 · v2 · pith:NXRYLHUTnew · submitted 2013-01-31 · 🌌 astro-ph.SR · astro-ph.HE· hep-ph· nucl-th

Rapid Spin Deceleration of Magnetized Proto-Neutron Stars via Asymmetric Neutrino Emission

classification 🌌 astro-ph.SR astro-ph.HEhep-phnucl-th
keywords decelerationasymmetricneutrinoabsorptionfieldmagneticspinstars
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We calculate the spin deceleration of proto-neutron stars by asymmetric neutrino absorption in the context of a fully relativistic mean field theory. We calculate for the first time the spin deceleration of neutron stars due to asymmetric neutrino absorption in a toroidal magnetic field configurations. We find a surprising effect that the deceleration can much larger for asymmetric neutrino absorption in a toroidal magnetic field than the usually presumed braking due to magnetic dipole radiation. This may explain the observation that magnetars appear to have had a more rapid deceleration in the past.

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