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相关论文: Spin-down of a pulsar with a yielding crust

200 篇论文

The thermal emission detected from the millisecond pulsar J0437-4715 is not explained by standard cooling models of neutron stars without a heating mechanism. We investigated three heating mechanisms controlled by the rotational braking of…

高能天体物理现象 · 物理学 2015-05-18 Denis Gonzalez , Andreas Reisenegger , Rodrigo Fernandez

Crustquake events may be connected with both rapid spin-up `glitches' within the regular slowdown of neutron stars, and high-energy magnetar flares. We argue that magnetic field decay builds up stresses in a neutron star's crust, as the…

高能天体物理现象 · 物理学 2015-06-23 S. K. Lander , N. Andersson , D. Antonopoulou , A. L. Watts

We conduct force-free simulations of a single neutron star undergoing orbital motion in flat spacetime, mimicking the trajectory of the star about the center of mass on a compact binary system. Our attention is focused on the kinetic energy…

高能天体物理现象 · 物理学 2020-03-18 Federico Carrasco , Masaru Shibata

We consider the physics of free precession of a rotating neutron star with an oblique magnetic field. We show that if the magnetic stresses are large enough, then there is no possibility of steady rotation, and precession is inevitable.…

天体物理学 · 物理学 2009-11-07 Ira Wasserman

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

Quantum mechanical corrections to the hydromagnetic force balance equation, derived from the microscopic Schr\"{o}dinger-Pauli theory of quantum plasmas, modify the equilibrium structure and hence the mass quadrupole moment of a neutron…

高能天体物理现象 · 物理学 2015-11-20 A. G. Suvorov , A. Mastrano , A. Melatos

The pulsar magnetic inclination angle is a key parameter for pulsar physics. It influences the observable properties of pulsars, such as the pulse beam width, braking index, polarisation, and emission geometry. In this study, we give a…

高能天体物理现象 · 物理学 2024-04-24 Biao-Peng Li , Wen-Qi Ma , Zhi-Fu Gao

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

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

Force-free pulsar magnetospheres develop a large scale poloidal electric current circuit that flows along open magnetic field lines from the neutron star to the termination shock. The electric current closes through the interior of the…

高能天体物理现象 · 物理学 2019-06-12 V. Karageorgopoulos , K. N. Gourgouliatos , I. Contopoulos

Recent timing observation constrained the braking index of the X-ray pulsar PSR J1640-4631 to be $n=3.15\pm0.03$, which is the highest value of all pulsars with measured braking indices so far. In this Letter, we investigate whether pulsar…

高能天体物理现象 · 物理学 2016-10-24 Wen-Cong Chen

We use axisymmetric magnetohydrodynamic simulations to investigate the spinning-down of magnetars rotating in the propeller regime and moving supersonically through the interstellar medium. The simulations indicate that magnetars spin-down…

天体物理学 · 物理学 2009-11-11 O. D. Toropina , M. M. Romanova , R. V. Lovelace

Braking index measurements of young radio pulsars are all smaller than the value expected for spin down by magnetic dipole braking. We investigate magnetic field evolution in the neutron star crust due to Hall drift as an explanation for…

太阳与恒星天体物理 · 物理学 2014-11-21 K. N. Gourgouliatos , A. Cumming

The discovery of very slow pulsations (Pspin=5560s) has solved the long-standing question of the nature of the compact object in the high-mass X-ray binary 4U 2206+54 but has posed new ones. According to spin evolutionary models in close…

高能天体物理现象 · 物理学 2015-06-04 P. Reig , J. M. Torrejon , P. Blay

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

Some of the most energetic pulsars exhibit rotation-modulated gamma-ray emission in the $0.1$ to $100$ GeV band. The luminosity of this emission is typically $0.1\text{-}10\%$ of the pulsar spin-down power (gamma-ray efficiency), implying…

高能天体物理现象 · 物理学 2023-03-20 Hayk Hakobyan , Alexander Philippov , Anatoly Spitkovsky

In the present paper we investigate self-consistently slowly rotating neutron and strange stars in R-squared gravity. For this purpose we first derive the equations describing the structure of the slowly rotating compact stars in…

广义相对论与量子宇宙学 · 物理学 2015-06-22 Kalin V. Staykov , Daniela D. Doneva , Stoytcho S. Yazadjiev , Kostas D. Kokkotas

A young neutron star with large spin-down power is expected to be closely surrounded by an e+/- pair plasma maintained by the conversion of gamma-rays associated with the star's polar-cap and/or outer-gap accelerators. Cyclotron-resonance…

天体物理学 · 物理学 2007-05-23 M. Ruderman

We consider magnetospheric structure of rotating neutron stars with internally twisted axisymmetric magnetic fields. The twist-induced and rotation-induced toroidal magnetic fields align/counter-align in different hemispheres. Using…

高能天体物理现象 · 物理学 2021-04-19 Maxim Lyutikov , Praveen Sharma , Maxim Barkov

The conversion of nuclear matter to quark matter in the core of a rotating neutron star alters its moment of inertia. Hence the epoch over which conversion takes place will be signaled in the spin-down "signal_prl.tex" 581 lines, 22203…

天体物理学 · 物理学 2009-10-30 Norman K. Glendenning , S. Pei , F. Weber