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

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(abridged) A detailed examination of the evolution of stochastic magnetic fields between high cosmic temperatures and the present epoch is presented. A simple analytical model matching the results of the 3D MHD simulations allows for the…

天体物理学 · 物理学 2009-11-10 Robi Banerjee , Karsten Jedamzik

We present radio timing measurements of six rotating radio transient (RRAT) sources discovered in the Parkes Multibeam Pulsar Survey. These provide four new phase-connected timing solutions and two updated ones, making a total of seven of…

太阳与恒星天体物理 · 物理学 2015-05-14 M. A. McLaughlin , A. G. Lyne , E. F. Keane , M. Kramer , J. J. Miller , D. R. Lorimer , R. N. Manchester , F. Camilo , I. H. Stairs

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

Quasi-periodic oscillations have been seen in the light curves following several magnetar giant flares. These oscillations are of great interest as they probably provide our first ever view of the normal modes of oscillation of neutron…

太阳与恒星天体物理 · 物理学 2015-06-16 K. Glampedakis , D. I. Jones

We discuss a model wherein soft gamma-ray repeaters (SGRs), anomalous X-ray pulsars (AXPs), and radio quiet isolated neutron stars (RQINSs) are all compact objects exhibiting superconductivity, namely color-flavor locked quark stars. In…

天体物理学 · 物理学 2009-11-11 Brian Niebergal , Rachid Ouyed , Denis Leahy

We make statistics about the number distribution of normal radio pulsars according to the pulsar spin period. And find the physical meaning of the traditional statistical method about this problem is very limited. According to the…

太阳与恒星天体物理 · 物理学 2011-03-22 Ying-Chun Wei , Cheng-Min Zhang , Yong-Heng Zhao , Qiu-He Peng , Xin-Ji Wu

It is now known that the emission from radio pulsars can vary over a wide range of timescales, from fractions of seconds to decades. However, it is not yet known if long- and short-term emission variability are caused by the same physical…

高能天体物理现象 · 物理学 2019-08-28 Paul Brook , Aris Karastergiou , Simon Johnston

Fast radio bursts (FRBs) are energetic millisecond phenomena in radio band. Polarimetric studies of repeating FRBs indicate that many of these sources occupy extreme and complex magneto-ionized environments. Recently, a frequency-dependent…

高能天体物理现象 · 物理学 2023-09-14 Wan-Jin Lu , Zhen-Yin Zhao , F. Y. Wang , Z. G. Dai

Millisecond pulsars are old neutron stars that have been spun up to high rotational frequencies via accretion of mass from a binary companion star. An important issue for understanding the physics of the early spin evolution of millisecond…

太阳与恒星天体物理 · 物理学 2012-02-21 Thomas M. Tauris

We present a method for the detection and characterization of random changes in the flux from $\gamma$-ray pulsars on sub-hour timescales, much shorter than variations that can be accessed using direct flux measurements. Flux variations are…

高能天体物理现象 · 物理学 2025-08-26 Matthew Kerr

We simulate the characteristics of the Galactic population of radio and $\gamma$-ray pulsars using Monte Carlo techniques. At birth, neutron stars are spatially distributed in the Galactic disk, with supernova-kick velocities, and randomly…

天体物理学 · 物理学 2019-08-17 Peter L. Gonthier , Michelle S. Ouellette , Joel Berrier , Shawn O'Brien , Alice K. Harding

We consider magnetic field evolution of neutron stars during polar-cap accretion. The size of the polar cap increases as the field decays, and is set by the last open field line before the accretion disk. Below the polar cap we find the…

天体物理学 · 物理学 2016-08-30 Mikael Sahrling

(1) Background: for the study of highly magnetized neutron stars observed as magnetars, and to quantify the effect of this intense magnetic field onto the star's structure and shape which can be particularly relevant for the study of…

高能天体物理现象 · 物理学 2026-05-20 Debarati Chatterjee , Daw Guttmann , Jérôme Novak , Micaela Oertel , Martin Jakob Steil

Current models of magnetars require extremely strong magnetic fields to explain their observed quiescent and bursting emission, implying that the field strength within the star's outer crust is orders of magnitude larger than the dipole…

太阳与恒星天体物理 · 物理学 2016-04-07 Konstantinos N. Gourgouliatos , Toby Wood , Rainer Hollerbach

The rare association of three persistent radio sources (confirmed PRS1 and PRS2, candidate PRS3) with repeating fast radio bursts (FRB 20121102A, 20190520B, 20201124A) offers a unique probe into their magneto-ionic environments. PRSs are…

高能天体物理现象 · 物理学 2025-07-08 Sk. Minhajur Rahaman , Sandeep Kumar Acharya , Paz Beniamini , Jonathan Granot

Pulsars are stars that emit electromagnetic radiation in well-defined time intervals. The frequency of such pulses decays with time as is quantified by the {\it braking index} ($n$). In the canonical model $n = 3$ for all pulsars, but…

高能天体物理现象 · 物理学 2018-11-28 H. O. Oliveira , N. S. Magalhaes , R. M. Marinho , G. A. Carvalho , C. Frajuca

Radio pulsars are often used as clocks in a wide variety of experiments. Imperfections in the clock, known as timing noise, have the potential to reduce the significance of, or even thwart e.g. the attempt to find a stochastic gravitational…

高能天体物理现象 · 物理学 2019-06-26 Nakornping Namkham , Phrudth Jaroenjittichai , Simon Johnston

Magnetic fields have been detected in most if not all types of stars across the Hertzsprung-Russell diagram. Where present, these fields have the potential to significantly impact the evolution of their host stars. Furthermore, they…

太阳与恒星天体物理 · 物理学 2017-12-21 A. J. Martin

The evolution of the multipolar structure of the magnetic field of isolated neutron stars is studied assuming the currents to be confined to the crust. We find that except for multipoles of very high order ($l\gsim 25$) the evolution is…

天体物理学 · 物理学 2009-10-31 Dipanjan Mitra , Sushan Konar , Dipankar Bhattacharya

The unidentified X-ray source RX J0720.4-3125 is a candidate isolated neutron star showing evidence for pulsed emission with an 8.39 s period and a spectrum consistent with a blackbody at kT=80 eV (Haberl et al. 1996, 1997). We show that…

天体物理学 · 物理学 2009-10-30 John C. L. Wang
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