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相关论文: Observational Constraints on the Pulsar Wind Model…

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Variation in the angle $\alpha$ between a pulsar's rotational and magnetic axes would change the torque and spin-down rate. We show that sudden increases in $\alpha$, coincident with glitches, could be responsible for the persistent…

天体物理学 · 物理学 2009-10-30 B. Link , R. I. Epstein

The pulsar wind model is updated by considering the effect of particle density and pulsar death. It can describe both the short term and long term rotational evolution of pulsars consistently. It is applied to model the rotational evolution…

高能天体物理现象 · 物理学 2015-06-23 F. F. Kou , H. Tong

The coupled evolution of pulsar rotation and inclination angle in the wind braking model is calculated. The oblique pulsar tends to align. The pulsar alignment will affect its spin-down behavior. As a pulsar evolves from the magneto-dipole…

高能天体物理现象 · 物理学 2017-03-15 H. Tong , F. F. Kou

Intermittent pulsars are part-time radio pulsars. They have higher slow down rate in the on state (radio-loud) than in the off state (radio-quiet). This gives the evidence that particle wind may play an important role in pulsar spindown.…

高能天体物理现象 · 物理学 2015-06-18 L. Li , H. Tong , W. M. Yan , J. P. Yuan , R. X. Xu , N. Wang

(adapted)Considering recent observations challenging the traditional magnetar model, we explore the wind braking of magnetars. There is evidence for strong multipole magnetic fields in active magnetars, but the dipole field inferred from…

高能天体物理现象 · 物理学 2015-06-05 H. Tong , R. X. Xu , L. M. Song , G. J. Qiao

A plausible model for the Crab Nebula is one in which a particle dominated, highly relativistic wind from the pulsar passes through a shock front in which the particles attain a power law energy distribution. The electrons and positrons…

天体物理学 · 物理学 2007-05-23 Roger A. Chevalier

Pulsars are good clocks in the universe. One fundamental question is that why they are good clocks? This is related to the braking mechanism of pulsars. Nowadays pulsar timing is done with unprecedented accuracy. More pulsars have braking…

高能天体物理现象 · 物理学 2016-01-14 H. Tong

Pulsars are highly magnetized and rapidly rotating neutron stars. The magnetic field can reach the critical magnetic field from which quantum effects of the vacuum becomes relevant, giving rise to magnetooptic properties of vacuum…

高能天体物理现象 · 物理学 2013-10-09 Brahim Lamine , Clément Berthière , Arnaud Dupays

As a result of observational difficulties, braking indices of only six rotation-powered pulsars are obtained with certainty, all of which are remarkably smaller than the value ($n=3$) expected for pure magnetodipole radiation model. This is…

天体物理学 · 物理学 2008-11-26 Y. L. Yue , R. X. Xu , W. W. Zhu

The magnetic dipole radiation (MDR) model is currently the best approach we have to explain pulsar radiation. However a most characteristic parameter of the observed radiation, the braking index n$_{\rm obs}$ shows deviations for all the…

高能天体物理现象 · 物理学 2016-10-05 Oliver Q. Hamil , Nick J. Stone , Jirina R. Stone

The evolutions of a neutron star's rotation and magnetic field (B-field) have remained unsolved puzzles for over half a century. We ascribe the rotational braking torques of pulsar to both components, the standard magnetic dipole radiation…

Pulsars are rotating neutron stars that are observed to be slowing down, implying a loss of their rotational energy. There can be several different physical mechanisms involved in their spin-down process. The properties of fast-rotating…

高能天体物理现象 · 物理学 2025-06-30 Avishek Basu , Prasanta Char , Rana Nandi

In this work we develop an analytic approach to study pulsar spindown. We use the monopolar spindown model by Alvarez and Carrami\~{n}ana (2004), which assumes an inverse linear law of magnetic field decay of the pulsar, to extract an…

广义相对论与量子宇宙学 · 物理学 2018-07-11 F. Chishtie , S. R. Valluri

It has been noted that the Crab and Vela pulsar proper motions lie along the symmetry axes of their wind nebulae. In an effort to promote this observation to a serious test of kick physics, we are using CXO images and other data to estimate…

天体物理学 · 物理学 2007-05-23 Roger W. Romani

Isolated pulsars are rotating neutron stars with accurately measured angular velocities $\Omega$, and their time derivatives which show unambiguously that the pulsars are slowing down. Although the exact mechanism of the spin-down is a…

高能天体物理现象 · 物理学 2015-04-01 Oliver Hamil

Pulsars are highly-magnetised rotating neutron stars and are well-known for the stability of their signature pulse shapes, allowing high-precision studies of their rotation. However, during the past 22 years, the radio pulse profile of the…

高能天体物理现象 · 物理学 2013-11-05 Andrew Lyne , Francis Graham-Smith , Patrick Weltevrede , Christine Jordan , Ben Stappers , Cees Bassa , Michael Kramer

Pulsars are rotating neutron stars that are seen to slow down, and the spin-down rate is thought to be due to magnetic dipole radiation. This leads to a prediction for the braking index n, which is a combination of spin period and its first…

太阳与恒星天体物理 · 物理学 2013-04-10 Wynn C. G. Ho , Nils Andersson

We present initial results of the first self-consistent numerical model of the outer magnetosphere of a pulsar. By using the relativistic ``particle-in-cell'' method with special boundary conditions to represent plasma dynamics in 3D, we…

天体物理学 · 物理学 2007-05-23 Anatoly Spitkovsky , Jonathan Arons

The radiation of a pulsar wind is computed assuming that at roughly 10 to 100 light cylinder radii from the star, magnetic energy is dissipated into particle energy. The synchrotron emission of heated particles appears periodic, with, in…

天体物理学 · 物理学 2009-11-07 J. G. Kirk , O. Skjaeraasen , Y. A. Gallant

A typical young pulsar slows down at an imperceptible rate, its spin period increasing by less than 10 microseconds over the course of a year. However, the inertia of a pulsar is so extreme that to effect this tiny change in rotation rate,…

天体物理学 · 物理学 2017-08-23 Bryan M. Gaensler
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