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The high density interior of a neutron star is expected to contain superconducting protons and superfluid neutrons. Theoretical estimates suggest that the protons will form a type II superconductor in which the stellar magnetic field is…

太阳与恒星天体物理 · 物理学 2015-06-11 Brynmor Haskell , Pierre M. Pizzochero , Stefano Seveso

Spinning superfluid neutrons in the core of a neutron star interact strongly with co-existing superconducting protons. One consequence is that the outward(inward) motion of core superfluid neutron vortices during spin-down(up) of a neutron…

天体物理学 · 物理学 2009-10-30 Malvin Ruderman , Tianhua Zhu , Kaiyou Chen

We investigate the effect of a pinned superfluid component on the gravitational wave emission of a rotating neutron star. Pinning of superfluid vortices to the flux-tubes in the outer core (where the protons are likely to form a type-II…

高能天体物理现象 · 物理学 2022-11-29 Brynmor Haskell , Marco Antonelli , Pierre Pizzochero

The effects of pinning between fluxoids and vortices in the core of a neutron star, on the dynamics of the core neutron superfluid are considered. The pinning impedes, but does not absolutely block, any radial as well as {\em azimuthal}…

高能天体物理现象 · 物理学 2015-05-20 M. Jahan-Miri

G. Srinivasan et al. (1990) proposed a simple and elegant explanation for the reduction of the neutron star magnetic dipole moment during binary evolution leading to low mass X-ray binaries and eventually to millisecond pulsars: Quantized…

高能天体物理现象 · 物理学 2017-09-26 M. Ali Alpar

The evolution of inclination angle and precession damping of radio pulsars is considered. It is assumed that the neutron star consists of 3 "freely" rotating components: the crust and two core components, one of which contains pinned…

高能天体物理现象 · 物理学 2017-08-25 K. Y. Kraav , M. V. Vorontsov , D. P. Barsukov

In the core of a canonical spinning magnetized neutron star(NS) a nearly uniform superfluid neutron vortex-array interacts strongly with a twisted array of magnetic flux-tubes threading the core's superconducting protons. One consequence is…

天体物理学 · 物理学 2007-05-23 M. Ruderman

Models for the evolution of magnetic fields of neutron stars are constructed, assuming the field is embedded in the proton superconducting core of the star. The rate of expulsion of the magnetic flux out of the core, or equivalently the…

天体物理学 · 物理学 2014-10-13 M. Jahan-Miri

In this paper we investigate the evolution of binary neutron stars, namely, their magnetic field, spin, and orbital evolution. The core of a neutron star is considered to be a superfluid, superconductor type II. Flux expulsion of the…

太阳与恒星天体物理 · 物理学 2009-05-05 Shohreh Abdolrahimi

The neutron vortices thought to exist in the inner crust of a neutron star interact with nuclei and are expected to pin to the nuclear lattice. Evidence for long-period precession in pulsars, however, requires that pinning be negligible. We…

天体物理学 · 物理学 2016-08-30 B. Link , C. Cutler

Neutron-star cores may be hosts of a unique mixture of a neutron superfluid and a proton superconductor. Compelling theoretical arguments have been presented over the years that if the proton superconductor is of type II, than the…

天体物理学 · 物理学 2009-11-13 Maarten van Hoven , Yuri Levin

The presence of superconducting and superfluid components in the core of mature neutron stars calls for the rethinking of a number of key magnetohydrodynamical notions like resistivity, the induction equation, magnetic energy and…

太阳与恒星天体物理 · 物理学 2015-08-26 Vanessa Graber , Nils Andersson , Kostas Glampedakis , Samuel K. Lander

Because of the quantum fluid properties of a neutron star core's neutrons and protons, its magnetic field is expected to be coupled strongly to its spin. This predicts a simple evolution of the surface-field of such stars as they spin down…

天体物理学 · 物理学 2007-05-23 M. Ruderman

We investigate the dynamics of magnetic vortices in type II superconductors with normal state pinning sites using the Ginzburg-Landau equations. Simulation results demonstrate hopping of vortices between pinning sites, influenced by…

超导电性 · 物理学 2017-06-14 M. P. Soerensen , N. F. Pedersen , M. Ogren

The self-consistent approach to the magnetic field evolution in neutron star cores, developed recently, is generalised to the case of superfluid and superconducting neutron stars. Applying this approach to the cold matter of neutron star…

高能天体物理现象 · 物理学 2020-10-21 Mikhail E. Gusakov , Elena M. Kantor , Dmitry D. Ofengeim

In a recent paper by Link, it was pointed out that the the standard picture of the neutron star core, composed of a mixture of a neutron superfluid and a proton type-II superconductor, is inconsistent with observations of long period…

高能物理 - 唯象学 · 物理学 2009-11-10 Kirk B. W. Buckley , Max A. Metlitski , Ariel R. Zhitnitsky

Timing of the Crab and Vela pulsars have recently revealed very peculiar evolutions of their spin frequency during the early stage of a glitch. We show that these differences can be interpreted from the interactions between neutron…

高能天体物理现象 · 物理学 2020-02-19 Aurélien Sourie , Nicolas Chamel

After some post-natal cooling, a spinning, magnetized, canonical neutron-star (NS) has a core of superconducting protons, superfluid neutrons, and degenerate extreme relativistic electrons, all surrounded by a thin highly conducting solid…

天体物理学 · 物理学 2007-05-23 Malvin Ruderman

The transition to a type II proton superconductor which is believed to occur in a cooling neutron star is accompanied by changes in the equation of hydrostatic equilibrium and by the formation of proton vortices with quantized magnetic…

天体物理学 · 物理学 2009-11-13 P. B. Jones

The ultra-strong magnetic field of magnetars modifies the neutrino cross section due to the parity violation of the weak interaction and can induce asymmetric propagation of neutrinos. Such an anisotropic neutrino radiation transfers not…

高能天体物理现象 · 物理学 2015-06-22 Yudai Suwa , Teruaki Enoto
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