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相关论文: Strong-field magnetohydrodynamics for neutron star…

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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

Neutron stars contain the strongest magnetic fields known in the Universe. In this paper, I discuss briefly how these magnetic fields are inferred from observations, as well as the evidence for their time-evolution. I show how these…

太阳与恒星天体物理 · 物理学 2013-05-14 Andreas Reisenegger

The strong magnetic field of neutron stars is intimately coupled to the observed temperature and spectral properties, as well as to the observed timing properties (distribution of spin periods and period derivatives). Thus, a proper…

高能天体物理现象 · 物理学 2019-12-23 José A. Pons , Daniele Viganò

The strong magnetic fields of neutron stars are closely linked to their observed thermal, spectral, and timing properties, such as the distribution of spin periods and their derivatives. To understand the evolution of astrophysical…

高能天体物理现象 · 物理学 2026-03-12 José A. Pons , Clara Dehman , Daniele Viganò

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 present our view of the main physical ingredients determining the evolution of neutron star magnetic fields. This includes the basic properties of neutron star matter, possible scenarios for the origin of the magnetic field, constraints…

天体物理学 · 物理学 2009-11-10 Andreas Reisenegger , Joaquin Prieto , Rafael Benguria , Dong Lai , Pablo Araya

Neutron stars host the strongest magnetic fields that we know of in the Universe. Their magnetic fields are the main means of generating their radiation, either magnetospheric or through the crust. Moreover, the evolution of the magnetic…

高能天体物理现象 · 物理学 2022-01-24 Konstantinos N. Gourgouliatos , Davide De Grandis , Andrei Igoshev

The extraordinary energetic activity of magnetars is usually explained in terms of dissipation of a huge internal magnetic field of the order of $10^{15-16}$G. How such a strong magnetic field can originate during the formation of a neutron…

高能天体物理现象 · 物理学 2017-07-26 A. G. Pili , N. Bucciantini , L. Del Zanna

This work aims at studying how magnetic fields affect the observational properties and the long-term evolution of isolated neutron stars, which are the strongest magnets in the universe. The extreme physical conditions met inside these…

高能天体物理现象 · 物理学 2013-10-07 Daniele Viganò

Simulating the long-term evolution of temperature and magnetic fields in neutron stars is a major effort in astrophysics, having significant impact in several topics. A detailed evolutionary model requires, at the same time, the numerical…

高能天体物理现象 · 物理学 2021-05-19 Daniele Viganò , Alberto García-García , José A. Pons , Clara Dehman , Vanessa Graber

Magnetohydrodynamic simulations of core-collapse supernovae have become increasingly mature and important in recent years. Magnetic fields take center stage in scenarios for explaining hypernova explosions, but are now also considered in…

高能天体物理现象 · 物理学 2024-03-29 Bernhard Müller

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 perform the first magnetohydrodynamic simulations in full general relativity of self-consistent rotating neutron stars (NSs) with ultrastrong mixed poloidal and toroidal magnetic fields. The initial uniformly rotating NS models are…

广义相对论与量子宇宙学 · 物理学 2022-02-23 Antonios Tsokaros , Milton Ruiz , Stuart L. Shapiro , Kōji Uryū

We study the evolution of magnetized and rigidly rotating neutron stars within a fully general relativistic implementation of ideal magnetohydrodynamics with no assumed symmetries in three spatial dimensions. The stars are modeled as…

广义相对论与量子宇宙学 · 物理学 2010-08-24 Steven L. Liebling , Luis Lehner , David Neilsen , Carlos Palenzuela

Mature neutron stars are cold enough to contain a number of superfluid and superconducting components. These systems are distinguished by the presence of additional dynamical degrees of freedom associated with superfluidity. In order to…

太阳与恒星天体物理 · 物理学 2015-05-18 K. Glampedakis , N. Andersson , L. Samuelsson

Using a numerical simulation, we study the effects of ambipolar diffusion and ohmic diffusion on the magnetic field evolution in the interior of an isolated neutron star. We are interested in the behavior of the magnetic field on a long…

天体物理学 · 物理学 2008-11-26 Jaime Hoyos , Andreas Reisenegger , Juan A. Valdivia

We present the first general-relativistic resistive magnetohydrodynamics simulations of self-consistent, rotating neutron stars with mixed poloidal and toroidal magnetic fields. Specifically, we investigate the role of resistivity in the…

We present calculations of magnetic field evolution by the Hall effect and Ohmic decay in neutron star crusts. We first discuss when and for which neutron stars the Hall effect is important relative to Ohmic decay. We compute the evolution…

天体物理学 · 物理学 2008-11-26 Andrew Cumming , Phil Arras , Ellen G. Zweibel

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

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
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