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相关论文: Modified pulsar current analysis: probing magnetic…

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The aim of this article is to draw attention to the importance of the electric current loss in the energy output of radio pulsars. We remind that even the losses attributed to the magneto-dipole radiation of a pulsar in vacuum can be…

天体物理学 · 物理学 2007-05-23 V. S. Beskin , E. E. Nokhrina

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

It is shown that the drift waves near the light cylinder can cause the modulation of the emission with periods of the order several seconds. These periods explain the intervals between successive pulses observed in "magnetars" and radio…

天体物理学 · 物理学 2009-11-11 D. Lomiashvili , G. Machabeli , I. Malov

Glitches are common phenomena in pulsars. After each glitch, there is usually a permanent increase in the pulsar's spin-down rate. Therefore a pulsar's present spin-down rate may be much higher than its initial value. Thus the…

天体物理学 · 物理学 2007-05-23 J. R. Lin , S. N. Zhang

The comparative analysis of parameters is carried out for two samples of radio pulsars. Objects of the first sample have periods P > 2 sec, the second is characterized by magnetic fields at the neutron star surface $Bs > 4.4\times10^{13}$…

高能天体物理现象 · 物理学 2020-04-20 I. F. Malov , H. P. Marozava

We consider combined rotational, magnetic, and thermal evolution of the neutron star during the accretion phase in a binary system. A rapid accretion-driven decay of the magnetic field decreases substantially the efficiency of angular…

高能天体物理现象 · 物理学 2015-07-14 Alfio Bonanno , Vadim Urpin

The evolution of inclination angle and precession damping of radio pulsars is considered. It is assumed that the neutron star consists of 3 "freely" rotating components: the crust and two core components, one of which contains pinned…

高能天体物理现象 · 物理学 2017-08-25 K. Y. Kraav , M. V. Vorontsov , D. P. Barsukov

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

Gravitational redshifts of neutron stars have a theoretical upper limit of z=0.62. Also, it is generally believed that neutron stars have magnetic fields on the order of ten to the twelfth to ten to the thirteenth G. A previously predicted…

广义相对论与量子宇宙学 · 物理学 2007-05-23 David Apsel

In a search for periodic variation in the arrival times of pulses from 151 young, energetic pulsars, we have identified seven cases of modulation consistent with one or two harmonics of a single fundamental with time-scale 0.5-1.5 yr. We…

太阳与恒星天体物理 · 物理学 2015-11-19 Matthew Kerr , George Hobbs , Simon Johnston , Ryan Shannon

The leptonic decay of the charged pion in the presence of background magnetic fields is investigated using quenched Wilson fermions. It is demonstrated that the magnetic field opens up a new channel for this decay. The magnetic…

高能物理 - 格点 · 物理学 2018-04-18 Gunnar S. Bali , Bastian B. Brandt , Gergely Endrodi , Benjamin Glaessle

In the absence of constraints from the binary companion or supernova remnant, the standard method for estimating pulsar ages is to infer an age from the rate of spin-down. While the generic spin-down age may give realistic estimates for…

星系天体物理 · 物理学 2015-03-13 Bulent Kiziltan , Stephen E. Thorsett

In this article, we propose a concise theoretical framework based on mixed field-susceptibilities to describe the decay of magnetic dipoles induced by non--magnetic nanostructures. This approach is first illustrated in simple cases in which…

Observations indicate that magnetic fields on neutron stars span at least the range $10^{8-15}$ G, corresponding to a range of magnetic fluxes similar to that found in white dwarfs and main sequence stars. The observational evidence is…

天体物理学 · 物理学 2007-05-23 Andreas Reisenegger

The magnetic field strengths of most millisecond pulsars(MSP) are about $10^{8-9}$ Gauss. The accretion induced magnetic field evolution scenario here concludes that the field decay is invesely related to the accreted mass and the minimum…

天体物理学 · 物理学 2007-05-23 Chengmin Zhang

An understanding of pulsar timing noise offers the potential to improve the timing precision of a large number of pulsars as well as facilitating our understanding of pulsar magnetospheres. For some sources, timing noise is attributable to…

高能天体物理现象 · 物理学 2018-02-07 B. Shaw , B. W. Stappers , P. Weltevrede

Magnetars are a kind of pulsars powered mainly by superhigh magnetic fields. They are popular sources with many unsolved issues in themselves, but also linked to various high energy phenomena, such as QPOs, giant flares, fast radio bursts…

高能天体物理现象 · 物理学 2021-03-31 Zhi-Fu Gao , Hao Shan , Hui Wang

We study the amplification of magnetic fields in the collapse and the post-bounce evolution of the core of a non-rotating star of 15 solar masses in axisymmetry. To this end, we solve the coupled equations of magnetohydrodynamics and…

太阳与恒星天体物理 · 物理学 2015-06-19 Martin Obergaulinger , Thomas Janka , Miguel Ángel Aloy Torás

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

Since the discovery of pulsars, the rotating-lighthouse model has been the choice of model to explain the radiation pulsation of pulsars. After discovering that some main sequence stars (e.g., CU Virginis) and ultracool dwarfs (e.g., TVLM…

高能天体物理现象 · 物理学 2024-04-10 Zhu-Xing Liang , Yi Liang