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相关论文: Magnetic Field Decay Makes Neutron Stars Look Olde…

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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

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

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…

高能天体物理现象 · 物理学 2013-10-17 Ricardo Heras

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

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

The variety of the observational appearance of young isolated neutron stars must find an explanation in the framework of some unifying approach. Nowadays it is believed that such scenario must include magnetic field decay, the possibility…

高能天体物理现象 · 物理学 2015-06-17 A. P. Igoshev , S. B. Popov , R. Turolla

Because of the quantum fluid properties of a neutron star core's neutrons and protons, its magnetic field is expected to be coupled strongly to its spin. This predicts a simple evolution of the surface-field of such stars as they spin down…

天体物理学 · 物理学 2007-05-23 M. Ruderman

The recent discovery of the "weak field, old magnetar", the soft gamma repeater SGR 0418+5729, whose dipole magnetic field is less than 7.5 \times 10^{12} G, has raised perplexing questions: How can the neutron star produce SGR-like bursts…

高能天体物理现象 · 物理学 2015-05-30 S. Dall'Osso , J. Granot , T. Piran

Possible origins of the magnetic fields of neutron stars include inheritance from the main sequence progenitor and dynamo action at some stage of evolution of progenitor. Inheritance is not sufficient to explain the fields of magnetars.…

天体物理学 · 物理学 2009-06-23 H. C. Spruit

After some post-natal cooling, a spinning, magnetized, canonical neutron-star (NS) has a core of superconducting protons, superfluid neutrons, and degenerate extreme relativistic electrons, all surrounded by a thin highly conducting solid…

天体物理学 · 物理学 2007-05-23 Malvin Ruderman

Spinning superfluid neutrons in the core of a neutron star interact strongly with co-existing superconducting protons. One consequence is that the outward(inward) motion of core superfluid neutron vortices during spin-down(up) of a neutron…

天体物理学 · 物理学 2009-10-30 Malvin Ruderman , Tianhua Zhu , Kaiyou Chen

There exists both theoretical and observational evidence that the magnetic field decay in neutron stars may proceed in a pronounced non--linear way during a certain episode of the neutron star's life. In the presence of a strong magnetic…

天体物理学 · 物理学 2009-11-07 U. Geppert , M. Rheinhardt

A significant fraction of massive main-sequence stars show strong, large-scale magnetic fields. The origin of these fields, their lifetimes, and their role in shaping the characteristics and evolution of massive stars are currently not well…

太阳与恒星天体物理 · 物理学 2016-08-03 L. Fossati , F. R. N. Schneider , N. Castro , N. Langer , S. Simon-Diaz , A. Mueller , A. de Koter , T. Morel , V. Petit , H. Sana , G. A. Wade

We propose a simple explanation for the apparent dearth of radio pulsars associated with young supernova remnants (SNRs). Recent X-ray observations of young remnants have revealed slowly rotating (P ~ 10-s) central pulsars with pulsed…

天体物理学 · 物理学 2007-05-23 E. V. Gotthelf , G. Vasisht

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

Ultramagnetized neutron stars or magnetars have been invoked to explain several astrophysical phenomena. We examine how the magnetic field of a magnetar will decay over time and how this decay affects the cooling of the object. We find that…

天体物理学 · 物理学 2009-10-30 Jeremy S. Heyl , S. R. Kulkarni

As a massive star evolves through multiple stages of nuclear burning on its way to becoming a supernova, a complex, differentially rotating structure is set up. Angular momentum is transported by a variety of classic instabilities, and also…

天体物理学 · 物理学 2009-11-10 A. Heger , S. E. Woosley , H. C. Spruit

A model of the ferromagnetic origin of magnetic fields of neutron stars is considered. In this model, the magnetic phase transition occurs inside the core of neutron stars soon after formation. However, owing to the high electrical…

天体物理学 · 物理学 2009-10-31 M. Kutschera

Well before the radio discovery of pulsars offered the first observational confirmation for their existence (Hewish et al., 1968), it had been suggested that neutron stars might be endowed with very strong magnetic fields of…

高能天体物理现象 · 物理学 2019-02-18 Konstantinos N. Gourgouliatos , Paolo Esposito

The evidence for associations between neutron stars and supernova remnants is reviewed. After summarizing the situation for young radio pulsars, I consider the evidence from associations that young neutron stars can have properties very…

天体物理学 · 物理学 2007-05-23 V. M. Kaspi
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