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相关论文: Initial periods and magnetic fields of neutron sta…

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We present estimates of initial spin periods, $P_0$, for radio pulsars associated with supernova remnants. By using the published data on 30 objects, we were able to derive a reliable estimate for the initial spin period, assuming standard…

高能天体物理现象 · 物理学 2015-06-04 S. B. Popov , R. Turolla

The magnetic fields of neutron stars have a large range (~3e10 - 1e15 G). There may be a tendency for more highly magnetized neutron stars to come from more massive stellar progenitors, but other factors must also play a role. When combined…

高能天体物理现象 · 物理学 2015-05-20 Roger A. Chevalier

We analyze different possibilities to explain the wide initial spin period distribution of radio pulsars presented by Noutsos et al. (2013). With a population synthesis modeling we demonstrate that magnetic field decay can be used to…

高能天体物理现象 · 物理学 2013-06-25 A. P. Igoshev , S. B. Popov

This paper intends to give a broad overview of the present knowledge about neutron star magnetic fields, their origin and evolution. An up-to-date overview of the rich phenomenology (encompassing ``classical'' and millisecond radio pulsars,…

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

We explore the hypothesis that the magnetic fields of neutron stars are of fossil origin. For parametrised models of the distribution of magnetic flux on the Main Sequence and of the birth spin period of the neutron stars, we calculate the…

天体物理学 · 物理学 2009-11-11 Lilia Ferrario , Dayal Wickramasinghe

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

We perform population synthesis studies of different types of neutron stars (thermally emitting isolated neutron stars, normal radio pulsars, magnetars) taking into account the magnetic field decay and using results from the most recent…

高能天体物理现象 · 物理学 2014-11-20 S. B. Popov , J. A. Pons , J. A. Miralles , P. A. Boldin , B. Posselt

We derive the initial spin period distribution of neutron stars by studying the population of young pulsars associated with supernova remnants. Our hierarchical Bayesian approach accounts for the measurement uncertainties of individual…

高能天体物理现象 · 物理学 2024-06-24 Shen-Shi Du , Xiao-Jin Liu , Zu-Cheng Chen , Zhi-Qiang You , Xing-Jiang Zhu , Zong-Hong Zhu

This paper suggests the idea that all neutron stars experienced at birth an ultrafast decay of their magnetic fields from their initial values to their current surface values. If the electromagnetic energy radiated during this field decay…

星系天体物理 · 物理学 2012-04-05 Ricardo Heras

Several recent papers conclude that radio-pulsar magnetic fields decay on a time-scale of 10 Myr, apparently contradicting earlier results. We have implemented the methods of these papers in our code and show that this preference for rapid…

天体物理学 · 物理学 2007-05-23 Joeri van Leeuwen , Frank Verbunt

We use a modified pulsar current analysis to study magnetic field decay in radio pulsars. In our approach we analyse the flow, not along the spin period axis as has been performed in previous studies, but study the flow along the direction…

高能天体物理现象 · 物理学 2014-09-30 A. P. Igoshev , S. B. Popov

Neutron stars are extremely strong cosmic magnets which fields are expected to decay with time. Here we report on the simple test of this process. Adopting a novel approach, we have estimated surface magnetic fields $B$ for 76 radiopulsars…

高能天体物理现象 · 物理学 2018-01-01 Anton Biryukov , Artyom Astashenok , Sergey Karpov , Gregory Beskin

We perform population synthesis studies of different types of neutron stars taking into account the magnetic field decay. For the first time, we confront our results with observations using {\it simultaneously} the Log N -- Log S…

高能天体物理现象 · 物理学 2015-05-20 S. B. Popov , P. A. Boldin , J. A. Miralles , J. A. Pons , B. Posselt

The analysis of distributions of some parameters of radio pulsars emitting X-ray radiation was carried out. The majority of such pulsars has short spin periods with the average value $< P >$ = 133 msec. The distribution of period…

高能天体物理现象 · 物理学 2019-04-10 Igor F. Malov , Maria A. Timirkeeva

Estimations of magnetic fields of neutron stars, observed as radio and X-ray pulsars, are discussed. It is shown, that theoretical and observational values for different types of radiopulsars are in good correspondence. Radiopulsars in…

高能天体物理现象 · 物理学 2016-01-18 G. S. Bisnovatyi-Kogan

We model the evolution of the magnetic fields of neutron stars as consisting of a long term power-law decay modulated by short term small amplitude oscillations. Our model predictions on the timing noise $\ddot\nu$ of neutron stars agree…

高能天体物理现象 · 物理学 2015-06-04 Shuang-Nan Zhang , Yi Xie

The origin of the strong magnetic fields measured in magnetars is one of the main uncertainties in the neutron star field. On the other hand, the recent discovery of a large number of such strongly magnetized neutron stars, is calling for…

高能天体物理现象 · 物理学 2015-06-22 J. Martin , N. Rea , D. F. Torres , A. Papitto

The role of magnetic field decay in normal radio pulsars is still debated. In this paper we present results which demonstrate that an episode of magnetic field decay in hot young neutron stars can explain anomalous values of braking indices…

高能天体物理现象 · 物理学 2021-03-31 A. P. Igoshev , S. B. Popov

We review the measurements of magnetic fields of OBA stars. Based on these data we confirm that magnetic fields are distributed according to a lognormal law with a mean log(B)=-0.5 (B in kG) with a standard deviation sigma=0.5. The shape of…

Population synthesis studies constitute a powerful method to reconstruct the birth distribution of periods and magnetic fields of the pulsar population. When this method is applied to populations in different wavelengths, it can break the…

高能天体物理现象 · 物理学 2015-09-30 M. Gullón , J. A. Pons , J. A. Miralles , D. Viganò , N. Rea , R. Perna
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