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Modèles superfluides d'étoiles à neutrons en relativité générale : applications à la dynamique des pulsars

Abstract : The aim of this thesis is to study different aspects, both microscopic and macroscopic, associated with the presence of a large amount of superfluid matter inside neutron stars. First, we computed stationary configurations of rotating superfluid neutron stars, in general relativity, using realistic equations of state. Based on these equilibrium configurations, we then developed a simple model of pulsar glitches, in general relativity, seen as angular momentum transfers between the superfluid neutrons and the charged particles composing the star. This enables us to infer spin-up time scales that could be compared with future accurate glitch observations, in order to get some constraints on the interior of neutron stars. Finally, we also focused on the dynamics of superfluid vortex lines, accounting for the presence of fluxtubes, if the protons are forming a type II superconductor in the core of neutron stars.
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https://tel.archives-ouvertes.fr/tel-01704740
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Submitted on : Thursday, February 8, 2018 - 4:43:08 PM
Last modification on : Wednesday, September 23, 2020 - 4:39:25 AM
Long-term archiving on: : Wednesday, May 9, 2018 - 2:08:12 PM

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  • HAL Id : tel-01704740, version 1

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Aurélien Sourie. Modèles superfluides d'étoiles à neutrons en relativité générale : applications à la dynamique des pulsars. Astrophysique [astro-ph]. Université Paris sciences et lettres, 2017. Français. ⟨NNT : 2017PSLEO002⟩. ⟨tel-01704740⟩

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