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In light of the discovery of the long-period radio pulsar PSR J0901-4046, it is interesting to revisit a question about how the magnetized neutron star slows down its rotation. In the case of a weak or liquid outer crust, the mechanism of…

高能天体物理现象 · 物理学 2024-05-27 Denis Nikolaevich Sob'yanin

Modeling the dynamics of the quantum fluids within a spinning-down neutron star gives a description consistent with observed pulsar magnetic field evolution and spin-period "glitches." The long-standing problem of large predicted excesses…

天体物理学 · 物理学 2007-05-23 M. Ruderman

The present study aims at studying the flow and field produced by a stellar radiative zone which is initially made to rotate differentially in the presence of a large-scale poloidal magnetic field threading the whole domain. We focus both…

太阳与恒星天体物理 · 物理学 2020-09-02 L. Jouve , F. Lignières , M. Gaurat

Magnetization reversal (switching) using either r.f. fields or brute-force precessional switching is currently thought to ultimately be limited by the non-linear excitation of non-uniform spin waves, the so-called Suhl instability. Here we…

材料科学 · 物理学 2007-05-23 K. Rivkin , V. Chandrasekhar , J. B. Ketterson

We calculate the structure of a force-free magnetosphere which is assumed to corotate with a central star and which interacts with an embedded differentially rotating accretion disc. The magnetic and rotation axes are aligned and the…

天体物理学 · 物理学 2009-10-31 Vasso Agapitou , John C. B. Papaloizou

Dynamics of the dayside magnetosphere and proton radiation belt was analyzed during unusual magnetic storm on 21 January 2005. We have found that during the storm from 1712 to 2400 UT, the subsolar magnetopause was continuously located…

The inclination angle $\chi$ between magnetic and rotation axes of pulsars is an important parameter in pulsar physics. The changes in the inclination angle of a pulsar would lead to observable effects, such as changes in the pulse beam…

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

We study the tuning effect of a transverse magnetic field on the confinement of spinons in the infinite XXZ spin-1/2 chain. The spinon confinement in this model takes place in the gapped antiferromagnetic phase upon application of a…

强关联电子 · 物理学 2024-01-15 S. B. Rutkevich

In silicon quantum dots (QDs), at a certain magnetic field commonly referred to as the "hot spot", the electron spin relaxation rate (T_1^(-1)) can be drastically enhanced due to strong spin-valley mixing. Here, we experimentally find that…

We present first-principles relativistic particle-in-cell simulations of the oblique pulsar magnetosphere with pair formation. The magnetosphere starts to form with particles extracted from the surface of the neutron star. These particles…

高能天体物理现象 · 物理学 2015-06-23 Alexander A. Philippov , Anatoly Spitkovsky , Benoit Cerutti

The ultra-strong magnetic field of magnetars modifies the neutrino cross section due to the parity violation of the weak interaction and can induce asymmetric propagation of neutrinos. Such an anisotropic neutrino radiation transfers not…

高能天体物理现象 · 物理学 2015-06-22 Yudai Suwa , Teruaki Enoto

The longitudinal dipole response of a quantum dot has been calculated in the far-infrared regime using local spin density functional theory. We have studied the coupling between the collective spin and density modes as a function of the…

凝聚态物理 · 物理学 2009-10-31 Ll. Serra , M. Barranco , A. Emperador , M. Pi , E. Lipparini

We report the discovery of a large, sudden, and persistent increase in the spin-down rate of B0540-69, a young pulsar in the Large Magellanic Cloud, using observations from the Swift and RXTE satellites. The relative increase in the…

高能天体物理现象 · 物理学 2015-07-15 F. E. Marshall , L. Guillemot , A. K. Harding , P. Martin , D. A. Smith

Strong magnetic field pulses associated with a relativistic electron bunch can imprint switching patterns in magnetic thin films that have uniaxial in-plane anisotropy. In experiments with Fe and FeCo alloy films the pattern shape reveals…

介观与纳米尺度物理 · 物理学 2017-02-24 Ioan Tudosa

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

We investigate the effect of a magnetic field on the global oscillation modes of a rotating fluid star in the magnetohydrodynamic approximation. We present general equations for the modification of any type of fluid mode due to a general…

天体物理学 · 物理学 2009-11-07 Sharon M. Morsink , Vahid Rezania

We have analyzed XMM-Newton and Chandra observations of the transient magnetar XTE J1810-197, spanning more than 11 years, from the initial phases of the 2003 outburst to the current quiescent level. We investigated the evolution of the…

高能天体物理现象 · 物理学 2016-04-20 F. Pintore , F. Bernardini , S. Mereghetti , P. Esposito , R. Turolla , N. Rea , F. Coti Zelati , G. L. Israel , A. Tiengo , S. Zane

We study a resistive tearing instability developing in a system evolving through the combined effect of Hall drift in the Electron-MHD limit and Ohmic dissipation. We explore first the exponential growth of the instability in the linear…

高能天体物理现象 · 物理学 2016-09-19 Konstantinos N. Gourgouliatos , Rainer Hollerbach

The magnetization orientation of a nanoscale ferromagnet can be manipulated using an electric current via the spin transfer effect. Time domain measurements of nanopillar devices at low temperatures have directly shown that magnetization…

其他凝聚态物理 · 物理学 2009-04-27 Samir Garzon , Longfei Ye , Richard A. Webb , Thomas M. Crawford , Mark Covington , Shehzaad Kaka

A number of low-mass millisecond pulsar (MSP) binaries in their rotation-powered state exhibit double-peaked X-ray orbital modulation centered at inferior pulsar conjunction. This state, which has been known to persist for years, has…

高能天体物理现象 · 物理学 2018-12-26 Zorawar Wadiasingh , Christo Venter , Alice K. Harding , Markus Böttcher , Patrick Kilian