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The interior of a neutron star is expected to be occupied by a neutron $^3P_2$ superfluid, which is the condensate of spin-triplet $p$-wave Cooper pairs of neutrons with total angular momentum $J=2$. Here we investigate the thermodynamic…

Nuclear Theory · Physics 2021-10-14 Takeshi Mizushima , Shigehiro Yasui , Daisuke Inotani , Muneto Nitta

Based on the magnetic dipole radiation from the 3P2 neutron superfluid vortices (3P2NSFV) in neutron stars, we propose a model of glitch for young pulsars by oscillation between B phase and A phase of 3P2 Neutron superfluid. The main…

High Energy Astrophysical Phenomena · Physics 2018-10-04 Qiu-He Peng , Jing-Jing Liu , Chih-Kang Chou

I review some of the ideas that have been proposed for the structure of neutron star interiors, and concentrate on the theoretical arguments for the existence of superfluidity in neutron stars. I also discuss the implications of neutron…

High Energy Astrophysical Phenomena · Physics 2019-06-27 J. A. Sauls

Since there is 3P2 neutron superfluid in neutron star interior, it can be treated as a system of magnetic dipoles. Under the presence of background magnetic field, the magnetic dipoles tend to align in the same direction. When the…

High Energy Astrophysical Phenomena · Physics 2016-12-15 Qiu-he Peng , Jie Zhang , Men-quan Liu , Chich-gang Chou

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…

Astrophysics · Physics 2007-05-23 M. Ruderman

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…

Astrophysics · Physics 2007-05-23 Malvin Ruderman

We explore the theoretical possibility of $^3P_0$ neutron superfluid in dilute spin-polarized neutron matter, which may be relevant to the crust region of a magnetized neutron star. In such a dilute regime where the neutron Fermi energy is…

Nuclear Theory · Physics 2024-01-17 Hiroyuki Tajima , Hiroshi Funaki , Yuta Sekino , Nobutoshi Yasutake , Mamoru Matsuo

We show the existence of a strong trend between neutron star surface temperature and the dipolar component of the magnetic field extending through three orders of field magnitude, a range that includes magnetars, radio-quiet isolated…

Astrophysics · Physics 2008-11-26 J. A. Pons , B. Link , J. A. Miralles , U. Geppert

Despite the fact that different particle species can diffuse with respect to each other in neutron star (NS) cores, the effect of particle diffusion on various phenomena associated with NS oscillations is usually ignored. Here we…

High Energy Astrophysical Phenomena · Physics 2021-07-21 K. Y. Kraav , M. E. Gusakov , E. M. Kantor

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…

Astrophysics · Physics 2009-10-30 Malvin Ruderman , Tianhua Zhu , Kaiyou Chen

The presence of superfluid phases in the interior of a neutron star affects its dynamics, as neutrons can flow relative to the non-superfluid (normal) components of the star with little or no viscosity. A probe of superfluidity comes from…

High Energy Astrophysical Phenomena · Physics 2023-12-14 Marco Antonelli , Alessandro Montoli , Pierre Pizzochero

The possibility of a neutron m=2-superfluid in the interior of neutron stars is investigated. This pairing state is energetically favoured in strong magnetic fields ($H\sim 10^{16}-10^{17}$ G). Because of the node in the angular-dependent…

Astrophysics · Physics 2016-08-30 Ch. Schaab , F. Weber , M. K. Weigel

The mechanism by which the radiation received from obliquely rotating neutron stars is generated remains an open question half a century after the discovery of pulsars. In contrast, considerable progress has recently been made in…

High Energy Astrophysical Phenomena · Physics 2023-03-02 Houshang Ardavan

The magnetic fields of neutron stars have a large range (~3e10 - 1e15 G). There may be a tendency for more highly magnetized neutron stars to come from more massive stellar progenitors, but other factors must also play a role. When combined…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Roger A. Chevalier

Basic rotational and magnetic properties of neutron superfluids and proton superconductors in neutron stars are reviewed. The modes of precession of the neutron superfluid are discussed in detail. We emphasize that at finite temperature,…

Astrophysics · Physics 2007-05-23 M. Ali Alpar

Neutron stars are believed to contain (neutron and proton) superfluids. I will give a summary of a macroscopic description of the interior of neutron stars, in a formulation which is general relativistic. I will also present recent results…

General Relativity and Quantum Cosmology · Physics 2017-08-23 David Langlois

The spin-down of a neutron star, e.g. due to magneto-dipole losses, results in compression of the stellar matter and induces nuclear reactions at phase transitions between different nuclear species in the crust. We show that this mechanism…

High Energy Astrophysical Phenomena · Physics 2015-08-19 M. E. Gusakov , E. M. Kantor , A. Reisenegger

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…

High Energy Astrophysical Phenomena · Physics 2017-08-25 K. Y. Kraav , M. V. Vorontsov , D. P. Barsukov

We address the problem of magnetic field dissipation in the neutron star cores, focusing on the role of neutron superfluidity. Contrary to the results in the literature, we show that in the finite-temperature superfluid matter composed of…

High Energy Astrophysical Phenomena · Physics 2018-08-08 E. M. Kantor , M. E. Gusakov

We estimate the strength of the induced magnetic field due to the total induced magnetic moment of the anisotropic ($^3PF^2$) neutron superfluid interior of neutron stars. The induced magnetic field of the neutron stars is found as follows.…

Astrophysics · Physics 2007-05-23 Qiu-he Peng
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