7 papers
Neutron contribution to the force on a proton vortex in superconducting neutron-star matter
Oleg A. Goglichidze, Mikhail E. Gusakov
We investigate the forces acting on a proton vortex in superconducting neutron-star matter composed of neutrons, protons, and electrons, accounting for Fermi-liquid interactions in…
Beyond the Tayler instability: A new global instability of toroidal magnetic fields in stars
Mikhail E. Gusakov, Laura Becerra, Elena M. Kantor +2
Stellar toroidal magnetic fields are known to be unstable to the Tayler instability. Here we demonstrate the existence of a complementary current-driven instability of essentially…
Instability windows of relativistic r-modes in stably stratified neutron stars with hyperonic cores
K. Y. Kraav, M. E. Gusakov, E. M. Kantor
(abridged) -modes are oscillations in rotating stars, primarily restored by the Coriolis force. These oscillations are the most susceptible to the Chandrasekhar-Friedman-Schutz…
Magnetothermal evolution of neutron star cores in the `weak-coupling' regime: implications of ambipolar diffusion for the quiescent X-ray luminosity of magnetars
N. A. Moraga, F. Castillo, D. D. Ofengeim +5
The high quiescent X-ray luminosity observed in some magnetars is widely attributed to the decay and evolution of their ultra-strong magnetic fields. Several dissipation mechanisms…
Non-purely transverse Magnus force in superconducting neutron stars
Oleg A. Goglichidze, Mikhail E. Gusakov
The force acting on a proton vortex in extreme type-II superconducting neutron star matter is studied in the limit of vanishing temperature. A detailed analysis is presented on how…
Validating and improving two-fluid simulations of the magnetic field evolution in neutron star cores
F. Castillo, N. A. Moraga, M. E. Gusakov +2
This paper addresses the evolution of an axially symmetric magnetic field in the core of a neutron star. The matter in the core is modeled as a system of two fluids, namely neutron…