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相关论文: Polarization of pulsar radiation in the two-pole c…

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We study sky maps and light curves of gamma-ray emission from neutron stars in compact binaries, and in isolation. We briefly review some gamma-ray emission models, and reproduce sky maps from a standard isolated pulsar in the Separatrix…

It is crucial to know the polarization properties of coherent radio waves that escape from pulsar polar caps to calculate the radiative transfer through the magnetosphere and to predict observable radio properties. We describe pair cascades…

高能天体物理现象 · 物理学 2026-03-25 Jan Benáček , Axel Jessner , Martin Pohl , Tatiana Rievajová , Lucy S. Oswald

We present polarisation profiles for 48 southern pulsars observed with the new 10-cm receiver at the Parkes telescope. We have exploited the low system temperature and high bandwidth of the receiver to obtain profiles which have good signal…

天体物理学 · 物理学 2009-11-10 A. Karastergiou , S. Johnston , R. N. Manchester

Super-sensitive observations of bright pulsars by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) have revealed weak radio emission continuously emerged in the rotation phases between the main pulse and interpulse of an…

高能天体物理现象 · 物理学 2025-04-10 P. F. Wang , J. L. Han

A general form of the polarization matrix valid for any type of electromagnetic radiation (plane waves, multipole radiation etc.) is defined in terms of a certain bilinear form in the field-strength tensor. The quantum counterpart is…

量子物理 · 物理学 2007-05-23 Muhammet Ali Can , Alexander S. Shumovsky

We consider the polarization properties of radiation emitted by relativistic charged particles while moving along the curved magnetic field lines in a pulsar manetosphere. We propose that the radiation emitted by positrons and electrons…

天体物理学 · 物理学 2007-05-23 R. T. Gangadhara

A new picture of pulsar high-energy emission is proposed that is different from both the traditional polar cap and outer gap models, but combines elements of each. The slot gap model is based on electron acceleration along the edge of the…

天体物理学 · 物理学 2009-11-10 Alice Harding , Alexander Muslimov

Polarization is a powerful diagnostic tool to constrain the site of the high-energy pulsed emission and particle acceleration in gamma-ray pulsars. Recent particle-in-cell simulations of pulsar magnetosphere suggest that high-energy…

高能天体物理现象 · 物理学 2016-09-28 Benoît Cerutti , Jérémy Mortier , Alexander A. Philippov

We consider emission of a photon by an electron in the field of a strong laser wave. Polarization effects in this process are important for a number of physical problems. We discuss a probability of this process for linearly polarized laser…

高能物理 - 唯象学 · 物理学 2007-05-23 D. Yu. Ivanov , G. L. Kotkin , V. G. Serbo

The model of pulsar radio emission is discussed in which a coherent radio emis-sion is excited in a vacuum gap above polar cap of neutron star. Pulsar X and gamma radiation are considered as the result of low-frequency radio emission…

天体物理学 · 物理学 2009-06-23 V. M. Kontorovich , A. B. Flanchik

We study the properties of polarized radiation in turbulent magnetic fields from X-ray binary jets. These turbulent magnetic fields are composed of large- and small-scale configurations, which result in the polarized jitter radiation when…

高能天体物理现象 · 物理学 2017-02-15 Jian-Fu Zhang , Fu-Yuan Xiang , Ju-Fu Lu

We have made polarimetric monitoring observations of millisecond pulsars visible from the northern hemisphere at 1410 MHz. Their emission properties are compared with those of normal pulsars. Although we demonstrated in paper I that…

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

Propagation of radio waves in the ultrarelativistic magnetized electron-positron plasma of pulsar magnetosphere is considered. Polarization state of the original natural waves is found to vary markedly on account of the wave mode coupling…

天体物理学 · 物理学 2009-11-13 S. A. Petrova

It is argued that the polar gap and flux tube in the pulsar magnetosphere act as a resonant cavity/waveguide system which is excited by oscillations in the primary beam current and accelerating potential. The modes will be converted,…

天体物理学 · 物理学 2007-05-23 Matthew D. T. Young

The origin of pulsar radio emission is one of the old puzzles in theoretical astrophysics. In this Letter we present a global kinetic plasma simulation which shows from first-principles how and where radio emission can be produced in pulsar…

高能天体物理现象 · 物理学 2023-12-12 Ashley Bransgrove , Andrei M. Beloborodov , Yuri Levin

Planets reflect and linearly polarize the radiation that they receive from their host stars. The emergent polarization is sensitive to aspects of the planet atmosphere such as the gas composition and the occurrence of condensates and their…

地球与行星天体物理 · 物理学 2018-02-28 Antonio García Muñoz

The number of pulsars with detected emission at X-ray and gamma-ray energies has been steadily growing, showing that beams of high-energy particles are commonly accelerated in pulsar magnetospheres, even though the location and number of…

天体物理学 · 物理学 2009-11-11 Isabelle A. Grenier , Alice K. Harding

We have developed a model for pulsar polarization by taking into account of viewing geometry, rotation and modulation of the emission region. By solving for the plasma dynamics, we deduced the expressions for curvature radiation electric…

高能天体物理现象 · 物理学 2011-09-06 Dinesh Kumar , R. T. Gangadhara

Over the last fifty years since the discovery of pulsars, our understanding of where and how pulsars emit the radiation we observe has undergone significant revision. The location and mechanisms of high-energy radiation are intimately tied…

高能天体物理现象 · 物理学 2018-08-22 Alice K. Harding