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相关论文: An Atlas For Interpreting Gamma-Ray Pulsar Light C…

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Gamma-ray emission from pulsars is thought to arise from accelerating regions in pulsar's outer magnetosphere. The shape of the light curves is thus sensitive to the details of the magnetic geometry of the magnetosphere. In this work, we…

高能天体物理现象 · 物理学 2009-11-03 Xue-Ning Bai , Anatoly Spitkovsky

There are now a half dozen young pulsars detected in high energy photons by the Compton GRO, showing a variety of emission efficiencies and pulse profiles. We present here a calculation of the pattern of high energy emission on the sky in a…

天体物理学 · 物理学 2009-10-22 Roger W. Romani , I. -A. Yadigaroglu

Gamma-ray photons from young pulsars allow the deepest insight into the properties and interactions of high-energy particles with magnetic and photon fields in a pulsar magnetosphere. Measurements with the Compton Gamma-Ray Observatory have…

天体物理学 · 物理学 2009-09-29 Gottfried Kanbach

(Abridged) Gamma-ray emission from pulsars has long been modeled using a vacuum dipole field. This approximation ignores changes in the field structure caused by the magnetospheric plasma and strong plasma currents. We present the first…

高能天体物理现象 · 物理学 2014-11-20 Xue-Ning Bai , Anatoly Spitkovsky

We compare population synthesis results for inner and outer magnetosphere emission models with the various characteristics measured in the first LAT pulsar catalogue for both the radio-loud and radio-weak or radio-quiet gamma-ray pulsars.…

高能天体物理现象 · 物理学 2015-05-27 Marco Pierbattista , Isabelle Grenier , Alice Harding , Peter L. Gonthier

We investigate the shapes of \gamma-ray pulsar light curves using 3D pulsar magnetosphere models of finite conductivity. These models, covering the entire spectrum of solutions between vacuum and force-free magnetospheres, for the first…

高能天体物理现象 · 物理学 2015-06-05 Constantinos Kalapotharakos , Alice K. Harding , Demosthenes Kazanas , Ioannis Contopoulos

Millisecond pulsars (MSPs) are a growing class of gamma-ray emitters. Pulsed gamma-ray signals have been detected from more than 40 MSPs with the Fermi Large Area Telescope (LAT). The wider radio beams and more compact magnetospheres of…

Observing simultaneously pulsed radio and gamma-ray emission from these stars helps to constrain the geometry and radiation mechanisms within their magnetosphere and to localize the multiple photon production sites. In this paper, we fit…

高能天体物理现象 · 物理学 2021-10-20 J. Pétri , D. Mitra

The Fermi Gamma-Ray Space Telescope has discovered many gamma-ray pulsars, both as radio-loud objects and radio-quiet or radio-weak pulsars that have been identified through blind period searches. The latter presumably have gamma-ray beams…

高能天体物理现象 · 物理学 2010-02-02 Marco Pierbattista , Isabelle Grenier , Alice Harding , Peter Gonthier

(abridged) Thanks to the recent discovery by Fermi of about fifty new gamma-ray pulsars, it becomes possible to look for statistical properties of their pulsed high-energy emission, especially their light-curves and phase-resolved spectra.…

高能天体物理现象 · 物理学 2015-05-20 Jérôme Pétri

We calculate the gamma-ray lightcurves and spectra of rotation powered pulsars for a wide range of observer's viewing angles, and inclination angles of the magnetic axis to the rotation axis. We show how the shapes of the observed…

天体物理学 · 物理学 2007-05-23 Agnieszka Wozna , Jaroslaw Dyks , Tomasz Bulik , Bronislaw Rudak

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…

In recent years, surprise discoveries of pulsed emission from the Crab and Vela pulsars above 100 GeV have drawn renewed attention to this largely unexplored region of the energy range. In this paper, we discuss example light curves due to…

高能天体物理现象 · 物理学 2018-08-22 Christo Venter , Monica Barnard , Alice K. Harding , Constantinos Kalapotharakos

Pulsed emission from gamma-ray pulsars originates inside the magnetosphere, from radiation by charged particles accelerated near the magnetic poles or in the outer gaps. In polar cap models, the high energy spectrum is cut off by magnetic…

天体物理学 · 物理学 2009-10-31 Alice K. Harding

Pulsed high energy radiation from pulsars is not yet completely understood. In this paper, we use the 3D self-consistent annular gap model to study light curves for both young and millisecond pulsars observed by the Fermi Gamma-ray Space…

高能天体物理现象 · 物理学 2010-08-23 Yuan-Jie Du , G. J. Qiao , J. L. Han , K. J. Lee , R. X. Xu

We modelled the radio and gamma-ray light curves of millisecond pulsars using outer gap, two-pole caustic, low-altitude slot gap, and pair-starved polar cap geometric models, combined with a semi-empirical conal radio model. We find that no…

高能天体物理现象 · 物理学 2014-11-04 C Venter , TJ Johnson , AK Harding , JE Grove

A more realistic description of the magnetosphere is crucial for understanding the radiation emitted by pulsars. In this paper, we revisit the annular gap model by employing a rotating dipole field, which is more realistic than the static…

高能天体物理现象 · 物理学 2026-03-26 Jie Tian , Xin Xu , Qijun Zhi , Jiguang Lu , Shijun Dang , Ke Yang , Xiao Wei , Guojun Qiao

In more than four years of observation the Large Area Telescope on board the Fermi satellite has identified pulsed $\gamma$-ray emission from more than 80 young pulsars, providing light curves with high statistics. Fitting the observations…

高能天体物理现象 · 物理学 2015-02-11 M. Pierbattista , A. K. Harding , I. A. Grenier , T. J. Johnson , P. A. Caraveo , M. Kerr , P. L. Gonthier

Recent observations have detected a number of young pulsars from the power peak in the gamma-ray band to the incoherent photon peak in the optical/IR. We have made progress on the multiwavelength phenomenology of pulsar emission and…

天体物理学 · 物理学 2007-05-23 Roger W. Romani

Pulsars emit pulsed emission across the entire electromagnetic spectrum and their light curve phenomenology is strongly dependent on energy. This is also true for the gamma-ray waveband. Continued detections by Fermi Large Area Telescope in…

高能天体物理现象 · 物理学 2018-11-29 Monica Barnard , Christo Venter , Alice K. Harding , Constantinos Kalapotharakos
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