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We consider the expulsion of the magnetic field from the super-conducting core of a neutron star and its subsequent decay in the crust. Particular attention is paid to a strong feedback of the distortion of magnetic field lines in the crust…

天体物理学 · 物理学 2009-10-31 D. Konenkov , U. Geppert

The study of long-term evolution of neutron star (NS) magnetic fields is key to understanding the rich diversity of NS observations, and to unifying their nature despite the different emission mechanisms and observed properties. Such…

太阳与恒星天体物理 · 物理学 2016-01-27 J. G. Elfritz , J. A. Pons , N. Rea , K. Glampedakis , D. Viganò

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

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 report on a study of the evolution of magnetic fields of neutron stars, driven by the expulsion of magnetic flux out of the proton superconducting core of the star. The rate of expulsion, or equivalently the velocity of outward motion of…

超导电性 · 物理学 2017-08-23 M. Jahan-Miri

In this work we explore the evolution of magnetic fields inside strongly magnetized neutron stars in axisymmetry. We model numerically the coupled field evolution in the core and the crust. Our code models the Hall drift and Ohmic effects…

高能天体物理现象 · 物理学 2017-11-29 Ashley Bransgrove , Yuri Levin , Andrei Beloborodov

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

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 [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

Shortly after a neutron star is born, the protons in its core begin to form a superconductor. In terrestrial materials, the hallmark of superconductivity is an associated expulsion of magnetic flux, but whether this expulsion process can be…

高能天体物理现象 · 物理学 2026-02-17 S. K. Lander , K. N. Gourgouliatos , Z. Wadiasingh , D. Antonopoulou

There exists both theoretical and observational evidence that the magnetic field decay in neutron stars may proceed in a pronounced non--linear way during a certain episode of the neutron star's life. In the presence of a strong magnetic…

天体物理学 · 物理学 2009-11-07 U. Geppert , M. Rheinhardt

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

The evolutionary scenario of the neutron star magnetic field is examined assuming a spindown-induced expulsion of magnetic flux originally confined to the core, in which case the expelled flux undergoes ohmic decay. The nature of field…

天体物理学 · 物理学 2009-10-31 Sushan Konar , Dipankar Bhattacharya

We present the first 3D fully coupled magneto-thermal simulations of neutron stars (including the most realistic background structure and microphysical ingredients so far) applied to a very complex initial magnetic field topology in the…

高能天体物理现象 · 物理学 2023-06-28 Clara Dehman , Daniele Viganò , Stefano Ascenzi , Jose A. Pons , Nanda Rea

We study the evolution of the field on the surface of proto-neutron stars in the immediate aftermath of stellar core collapse by analyzing the results of self-consistent, axisymmetric simulations of the cores of rapidly rotating high-mass…

高能天体物理现象 · 物理学 2018-01-17 Martin Obergaulinger , Miguel-Ángel Aloy

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 neutrons and charged particles, with slightly different velocity…

高能天体物理现象 · 物理学 2025-09-10 F. Castillo , N. A. Moraga , M. E. Gusakov , J. A. Valdivia , A. Reisenegger

Neutron stars exhibit magnetic fields and densities far beyond those achievable in terrestrial laboratories, offering a natural probe of strongly interacting matter under extreme conditions. Using observationally anchored mass-radius…

宇宙学与河外天体物理 · 物理学 2026-01-13 Abriana Lyda , Prajwal MohanMurthy

We study the mutual influence of thermal and magnetic evolution in a neutron star's crust in axial symmetry. Taking into account realistic microphysical inputs, we find the heat released by Joule effect consistent with the circulation of…

天体物理学 · 物理学 2010-11-02 J. A. Pons , J. A. Miralles , U. Geppert

(Abridged) The rotational evolution of isolated neutron stars is dominated by the magnetic field anchored to the solid crust of the star. Assuming that the core field evolves on much longer timescales, the crustal field evolves mainly…

太阳与恒星天体物理 · 物理学 2013-06-11 Jose A. Pons , Daniele Vigano , Ulrich Geppert
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