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相关论文: Physical processes in pulsar magnetospheres and no…

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It is generally accepted that the pulsar magnetic field converts most of its rotational energy losses into radiation. In this paper, we propose an alternative emission mechanism, in which neither the pulsar rotational energy nor its…

高能天体物理现象 · 物理学 2021-02-25 Nikolay Kamardin

Relativistic electron-positron winds with strong magnetic fields are considered as a source of radiation for cosmological $\gamma$-ray bursters. Such a wind is generated by a millisecond pulsar with a very strong magnetic field. An…

天体物理学 · 物理学 2015-06-24 Vladimir V. Usov

The mechanism by which the radiation received from obliquely rotating neutron stars is generated remains an open question half a century after the discovery of pulsars. In contrast, considerable progress has recently been made in…

高能天体物理现象 · 物理学 2023-03-02 Houshang Ardavan

The magnetospheres around neutron stars should be very particular because of their strong magnetic field and rapid rotation. A study of the pulsar magnetospheres is of a crucial importance since it is the key issue to understand how energy…

高能天体物理现象 · 物理学 2017-09-27 Vadim Urpin

Highly magnetised rapidly spinning neutron stars are widely considered to be natural sites for acceleration of charged particles. Powerful acceleration mechanism due to unipolar induction is thought to operate in the magnetospheres of…

天体物理学 · 物理学 2007-05-23 B. Rudak

Pulsar "standard model" of rotating magnetized conducting sphere surrounded by plasma is generalized in its essential parts for the case of oscillating star. Goldreich-Julian charge density, electromagnetic energy losses as well as polar…

天体物理学 · 物理学 2007-05-23 A. N. Timokhin

Pulsars are rotating neutron stars which emit lighthouse-like beams. Owing to their unique properties, pulsars are a unique astrophysical tool to test general relativity, inform on matter at extreme densities, and probe galactic magnetic…

天体物理仪器与方法 · 物理学 2019-07-24 Renaud Gueroult , Yuan Shi , Jean-Marcel Rax , Nathaniel J. Fisch

In this work, we consider the possibility of energy release in pulsar magnetospheres deformed by gravitational waves from nearby sources. The strong electromagnetic fields in the magnetospheres may release non-negligible energy despite the…

高能天体物理现象 · 物理学 2019-02-13 Huiquan Li , Jiancheng Wang

This is a review of X-ray emission from all types of isolated neutron stars, with an emphasis on rotation-powered pulsars. Topics include magnetospheric and thermal emission, as well as pulsar wind nebulae.

天体物理学 · 物理学 2007-05-23 V. M. Kaspi , M. S. E. Roberts , A. K. Harding

We conduct force-free simulations of a single neutron star undergoing orbital motion in flat spacetime, mimicking the trajectory of the star about the center of mass on a compact binary system. Our attention is focused on the kinetic energy…

高能天体物理现象 · 物理学 2020-03-18 Federico Carrasco , Masaru Shibata

We discuss plausible locations of radiating regions in the magnetospheres of pulsars and argue that the mechanisms of pulsar radiation at different frequencies are closely connected with the locations of the radiating regions, especially in…

天体物理学 · 物理学 2007-05-23 Vladimir V. Usov

Thirty-five years after the discovery of rotation-powered pulsars, we still do not understand the fundamentals of their pulsed emission at any wavelength. Even detailed pulse profiles cannot identify the location of the emission in a…

天体物理学 · 物理学 2007-05-23 Alice K. Harding

Pulsars are rapidly rotating neutron stars and are the outcome of the collapse of the core of a massive star with a mass of the order of or larger than eight solar masses. This process releases a huge gravitational energy of about 10^{53}…

高能物理 - 唯象学 · 物理学 2011-10-27 M. Barkovich , J. C. D'Olivo , R. Montemayor

The non-thermal emission in the magnetospheres of presupernova collapsing stars with initial dipole magnetic fields and a certain initial energy distribution of the charged particles in a magnetosphere is considered. The analysis of…

天体物理学 · 物理学 2009-11-10 Volodymyr Kryvdyk

Neutron stars are compact objects rotating at high speed, up to a substantial fraction of the speed of light (up to 20\% for millisecond pulsars) and possessing ultra-strong electromagnetic fields (close to and sometimes above the quantum…

高能天体物理现象 · 物理学 2020-01-13 Jérôme Pétri

Just as a rotating magnetised neutron star has material pulled away from its surface to populate a magnetosphere, a similar process can occur as a result of neutron-star pulsations rather than rotation. This is of interest in connection…

广义相对论与量子宇宙学 · 物理学 2009-11-13 Ernazar B. Abdikamalov , Bobomurat J. Ahmedov , John C. Miller

We have examined the cyclotron resonance instability developing in the relativistic out-flowing plasma in the pulsar magnetosphere. The instability condition leads to radio emission in the sub-GHz frequency regime which is likely to be seen…

高能天体物理现象 · 物理学 2015-06-16 Rahul Basu , Dipanjan Mitra , George I. Melikidze

The radio, optical, X-ray and gamma-ray nebulae that surround many pulsars are thought to arise from synchrotron and inverse Compton emission. The energy powering this emission, as well as the magnetic fields and relativistic particles, are…

高能天体物理现象 · 物理学 2015-05-19 J. G. Kirk

The conversion of neutron matter into strange matter in a neutron star occurs through the non-leptonic weak-interaction process. We study the energy loss of the neutron star by the emission of axions in that process. Owing to that process,…

天体物理学 · 物理学 2009-10-30 In-Saeng Suh , Chul H. Lee

A synthesis of the present knowledge on gamma-ray emission from the magnetosphere of a rapidly rotating neutron star is presented, focusing on the electrodynamics of particle accelerators. The combined curvature, synchrotron, and…

天体物理学 · 物理学 2009-11-11 Kouichi Hirotani
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