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相关论文: Finding (or not) New Gamma-ray Pulsars with GLAST

200 篇论文

The observed population of young radio pulsars has grown substantially in recent years due to a combination of large-scale surveys and deep targeted searches. Many of the pulsars are associated with supernova remnants and/or unidentified…

天体物理学 · 物理学 2007-05-23 D. R. Lorimer

The exclusive Galactic gamma-ray club has opened up to new members. Supernova remnants, pulsar wind nebulae, and massive binary systems hosting a compact object have recently joined the young pulsars as firmly established sources of gamma…

天体物理学 · 物理学 2008-04-03 Isabelle A. Grenier

Because of the relatively broad angular resolution of current gamma-ray instruments in the MeV-GeV energy range, the photons of a given source are mixed with those coming from nearby sources or diffuse background. This source confusion…

天体物理仪器与方法 · 物理学 2019-02-06 P. Bruel

We compare radio profile widths of young, energetic gamma-ray-detected and non-gamma-ray-detected pulsars. We find that the latter typically have wider radio profiles, with the boundary between the two samples exhibiting a dependence on the…

高能天体物理现象 · 物理学 2016-11-15 Simon C. Rookyard , Patrick Weltevrede , Simon Johnston , Matthew Kerr

Gamma rays from young pulsars and milli-second pulsars are expected to contribute to the diffuse gamma-ray emission measured by the {\it Fermi} Large Area Telescope (LAT) at high latitudes. We derive the contribution of the pulsars…

高能天体物理现象 · 物理学 2014-12-17 Francesca Calore , Mattia Di Mauro , Fiorenza Donato

Searches for millisecond pulsars (which we here loosely define as those with periods $<$ 20 ms) in the Galactic field have undergone a renaissance in the past five years. New or recently refurbished radio telescopes utilizing cooled…

星系天体物理 · 物理学 2015-06-16 K. Stovall , D. R. Lorimer , R. S Lynch

The Gamma-Ray Large Area Space Telescope (GLAST), scheduled to be launched in Fall 2007, is a next generation high energy gamma-ray observatory. The Large Area Telescope (LAT) instrument on-board GLAST with a wide field of view ($>$ 2 sr),…

天体物理学 · 物理学 2019-08-13 E. Nuss

Gamma rays with energy above 10 GeV interact with optical-UV photons resulting in pair production. Therefore, a large sample of high redshift sources of these gamma rays can be used to probe the extragalactic background starlight (EBL) by…

天体物理学 · 物理学 2009-11-10 Andrew Chen , Luis C. Reyes , Steven Ritz

Gamma rays in the band from 30 MeV to 300 GeV, used in combination with direct measurements and with data from radio and X-ray bands, provide a powerful tool for studying the origin of Galactic cosmic rays. Gamma-ray Large Area Space…

天体物理学 · 物理学 2008-11-26 J. F. Ormes , S. Digel , I. V. Moskalenko , A. Moiseev , R. Williamson

The search for pulsars in a sample of pulsar candidates found based on a multi-year survey conducted with low (6 channels; sampling 0.1s) time-frequency resolution on declinations -9^o < \delta < +42^o was carried out. A Large Phased Array…

高能天体物理现象 · 物理学 2022-10-26 S. A. Tyul'bashev , M. A. Kitaeva , G. E. Tyul'basheva

Millisecond pulsars (MSPs) and normal non-recycled pulsars are both detected in $\gamma$-rays. However, it appears that a much larger fraction of known energetic and nearby MSPs are detected in $\gamma$-rays, in comparison with normal…

高能天体物理现象 · 物理学 2015-06-18 L. Guillemot , T. M. Tauris

Radio and X-ray observations of the relativistic jets of microquasars show evidence for the acceleration of particles to very high energies. Signatures of non-thermal processes occurring closer in to the compact object can also be found. In…

天体物理学 · 物理学 2007-05-23 Guillaume Dubus

Pulsars in the Galactic centre promise to enable unparalleled tests of gravity theories and black hole physics and to serve as probes of the stellar formation history and evolution and the interstellar medium in the complex central region…

The Five-hundred-meter Aperture Spherical radio Telescope (FAST) is the most sensitive telescope at the $L$-band (1.0-1.5 GHz) and has been used to carry out the FAST Galactic Plane Pulsar Snapshot (GPPS) survey in the last 5 yr. Up to now,…

高能天体物理现象 · 物理学 2025-02-03 J. L. Han , D. J. Zhou , C. Wang , W. Q. Su , Yi Yan , W. C. Jing , Z. L. Yang , P. F. Wang , T. Wang , J. Xu , N. N. Cai , J. H. Sun , Q. L. Yang , R. X. Xu , H. G. Wang , X. P. You

A year after \emph{Fermi} was launched, the number of known gamma-ray pulsars has increased dramatically. For the first time, a sizable population of pulsars has been discovered in gamma-ray data alone. For the first time, millisecond…

高能天体物理现象 · 物理学 2009-12-21 L. Guillemot , Fermi LAT Collaboration

The pulsar glitches are generally assumed to be an apparent manifestation of the superfluid interior of the neutron stars. Most of them were discovered and extensively studied by continuous monitoring in the radio wavelengths. The Fermi-LAT…

天体物理仪器与方法 · 物理学 2022-04-20 E. V. Sokolova , A. G. Panin

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) The Gamma-ray Large Area Space Telescope (GLAST) will measure the spectra of distant extragalactic sources of high energy gamma-rays. GLAST can look for energy dependent propagation effects from such sources as a signal of…

天体物理学 · 物理学 2008-11-26 F. W. Stecker

We discuss the ability of the GLAST Large Area Telescope (LAT) to identify, resolve, and study the high energy gamma-ray sky. Compared to previous instruments the telescope will have greatly improved sensitivity and ability to localize…

天体物理学 · 物理学 2015-06-24 J. E. McEnery , I. V. Moskalenko , J. F. Ormes

Up to November 2022, 267 pulsars have been discovered in 36 globular clusters (GCs). In this paper, we present our studies on the distribution of GC pulsar parameters and the detection efficiency. The power law relation between the average…

高能天体物理现象 · 物理学 2023-03-20 De-Jiang Yin , Li-Yun Zhang , Bao-Da Li , Ming-Hui Li , Lei Qian , Zhichen Pan