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The rotation of a magnetised accreting neutron star (NS) in a binary system is described by its spin period and two angles: spin inclination $\alpha$ with respect to the orbital momentum and magnetic angle $\chi$ between the spin and the…

高能天体物理现象 · 物理学 2021-05-26 Anton Biryukov , Pavel Abolmasov

We formulate a model of pulsar spin evolution (braking, inclination angle evolution and radiative precession) taking into account the non-rigidity of neutron star rotation. We discuss two simple limiting cases of this model and show that…

高能天体物理现象 · 物理学 2015-06-18 D. P. Barsukov , O. A. Goglichidze , A. I. Tsygan

We revisit the case of magneto-rotational evolution of neutron stars (NSs) with accounting for changes of the angle \chi between spin and magnetic axes. This element of the evolution of NSs is very important for age estimates and population…

天体物理学 · 物理学 2007-05-23 S. A. Eliseeva , S. B. Popov , V. S. Beskin

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 evolution of neutron stars in close binary systems with a low-mass companion is considered assuming the magnetic field to be confined within the solid crust. We adopt the standard scenario of the evolution in a close binary system in…

天体物理学 · 物理学 2009-10-30 V. Urpin , U. Geppert , D. Konenkov

We investigate the neutron stars spin evolution (breaking, inclination angle evolution and radiative precession), taking into account the superfluidity of the neutrons in the star core. The neutron star is treated as a two-component system…

高能天体物理现象 · 物理学 2013-03-25 D. P. Barsukov , O. A. Goglichidze , A. I. Tsygan

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

The rotational evolution of a strongly magnetized neutron star (NS), accreting or isolated, is driven by external torques of different nature. In addition to the torques, even the tiniest deformations of the NS crust can affect its rotation…

高能天体物理现象 · 物理学 2025-11-04 Anton Biryukov , Pavel Abolmasov , Amir Levinson

This paper is the first in a series aimed at understanding the long-term evolution of neutron star magnetic fields. We model the stellar matter as an electrically neutral and lightly ionized plasma composed of three moving particle species:…

天体物理学 · 物理学 2009-11-13 J. Hoyos , A. Reisenegger , J. A. Valdivia

Some neutron stars may be born spinning fast and with strong magnetic fields---the so-called \emph{millisecond magnetars}. It is important to understand how a star's magnetic axis moves with respect to the spin axis in the star's early…

高能天体物理现象 · 物理学 2019-09-04 D I Jones

In a previous paper, we reported simulations of the evolution of the magnetic field in neutron star cores through ambipolar diffusion, taking the neutrons as a motionless uniform background. However, in real neutron stars, neutrons are free…

高能天体物理现象 · 物理学 2020-09-02 F. Castillo , A. Reisenegger , J. A. Valdivia

We consider the magnetic and spin evolution of isolated neutron stars assuming that the magnetic field is initially confined to the crust. The evolution of the crustal field is determined by the conductive properties of the crust which, in…

天体物理学 · 物理学 2015-06-24 Vadim Urpin , Denis Konenkov

In [Gusakov et al.\ PRD, 96, 103012, (2017)], we proposed a self-consistent method to study the quasistationary evolution of the magnetic field in neutron-star cores. Here we apply it to calculate the instantaneous particle velocities and…

高能天体物理现象 · 物理学 2018-08-13 D. D. Ofengeim , M. E. Gusakov

We analyze the statistical distribution of neutron stars at the stage of a supersonic propeller. An important point of our analysis is allowance for the evolution of the angle of inclination of the magnetic axis to the spin axis of the…

天体物理学 · 物理学 2009-11-13 V. S. Beskin , S. A. Eliseeva

As a massive star evolves through multiple stages of nuclear burning on its way to becoming a supernova, a complex, differentially rotating structure is set up. Angular momentum is transported by a variety of classic instabilities, and also…

天体物理学 · 物理学 2009-11-10 A. Heger , S. E. Woosley , H. C. Spruit

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 present analytic calculations of the electromagnetic torques acting on a magnetic neutron star rotating in vacuum, including near-zone torques associated with the inertia of dipole and quadrupole magnetic fields. We incorporate these…

太阳与恒星天体物理 · 物理学 2015-06-12 J. J. Zanazzi , Dong Lai

We propose a general method to self-consistently study the quasistationary evolution of the magnetic field in the cores of neutron stars. The traditional approach to this problem is critically revised. Our results are illustrated by…

高能天体物理现象 · 物理学 2018-08-08 M. E. Gusakov , E. M. Kantor , D. D. Ofengeim

We study the stability of neutron stars with toroidal magnetic fields by magnetohydrodynamic simulation in full general relativity under assumption of axial symmetry. Nonrotating and rigidly rotating neutron stars are prepared for a variety…

天体物理学 · 物理学 2008-12-18 Kenta Kiuchi , Masaru Shibata , Shijun Yoshida

In this paper we review the basics of magneto-rotational properties of neutron stars focusing on spin-up/spin-down behavior at different evolutionary stages. The main goal is to provide equations for the spin frequency changes in various…

高能天体物理现象 · 物理学 2024-02-08 P. Abolmasov , A. V. Biryukov , S. B. Popov
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