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Related papers: Pulsar Populations and Unidentified Gamma-Ray Sour…

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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…

Astrophysics · Physics 2009-10-22 Roger W. Romani , I. -A. Yadigaroglu

A survey of the Galactic plane in the region $-60\degree \leq l \leq 30\degree$, $|b| \leq 0.25\degree$ was carried out using the seven-beam Parkes Methanol Multibeam (MMB) receiver, which operates at a frequency of 6.5 GHz. Three pulsars…

We report on the analysis of 13 gamma-ray pulsars discovered in the Einstein@Home blind search survey using Fermi Large Area Telescope (LAT) Pass 8 data. The 13 new gamma-ray pulsars were discovered by searching 118 unassociated LAT sources…

Among the current sample of over 2000 radio pulsars known primarily in the disk of our Galaxy, millisecond pulsars now number almost 200. Due to the phenomenal success of blind surveys of the Galactic field, and targeted searches of Fermi…

Astrophysics of Galaxies · Physics 2015-06-11 Duncan R. Lorimer

Using gamma-ray data from the Fermi Large Area Telescope, various groups have identified a clear excess emission in the Inner Galaxy, at energies around a few GeV. This excess resembles remarkably well a signal from dark-matter…

High Energy Astrophysical Phenomena · Physics 2016-03-10 Richard Bartels , Suraj Krishnamurthy , Christoph Weniger

The existence of a population of millisecond pulsars in the Galactic bulge is supported, along with other evidence, by the Fermi GeV excess, an anomalous {\gamma}-ray emission detected almost 15 years ago in the direction of the Galactic…

High Energy Astrophysical Phenomena · Physics 2025-12-19 J. Berteaud , F. Calore , M. Clavel , J. Marvil , S. Hyman , F. K. Schinzel , M. Kerr

Over half of GeV gamma-ray sources observed by the EGRET experiment have not yet been identified as known astronomical objects. There is an isotropic component of such unidentified sources, whose number is about 60 in the whole sky. Here we…

Astrophysics · Physics 2009-10-31 Tomonori Totani , Tetsu Kitayama

The survey of the inner Galaxy with H.E.S.S. was remarkably successful in detecting a wide range of new very-high-energy gamma-ray sources. New TeV gamma-ray emitting source classes were established, although several of the sources remain…

Astrophysics of Galaxies · Physics 2015-05-13 S. Funk , J. A. Hinton , G. Hermann , S. Digel

Using survey data, we have re-evaluated the correlation of flat spectrum radio sources with EGRET sources in the Northern sky. A likelihood analysis incorporating the radio and X-ray properties and the Gamma-ray source localization is used…

Astrophysics · Physics 2009-11-07 David Sowards-Emmerd , Roger W. Romani , Peter F. Michelson

A large fraction of the anticipated source detections by the Gamma-ray Large Area Space Telescope (GLAST-LAT) will initially be unidentified. We argue that traditional approaches to identify individuals and/or populations of gamma ray…

Astrophysics · Physics 2008-11-26 Olaf Reimer , Diego F. Torres

We present a correlative study between all unidentified EGRET sources at low Galactic latitudes and the newly discovered pulsars in the released portion of the Parkes multibeam radio survey. We note 14 positional coincidences: eight of…

Astrophysics · Physics 2009-11-07 Diego F. Torres , Yousaf M. Butt , Fernando Camilo

Image-based searches have become a complementary approach for identifying pulsars, particularly at MHz frequencies where scattering and high dispersion measures affect high-time resolution observations. In this work, we searched the…

Astrophysics of Galaxies · Physics 2025-09-04 Silvia Mantovanini , N. Hurley-Walker , G. Anderson , K. Ross , S. W. Duchesne , T. J. Galvin

Radio-quiet gamma-ray pulsars like Geminga may account for a number of the unidentified EGRET sources in the Galaxy. The number of Geminga-like pulsars is very sensitive to the geometry of both the gamma-ray and radio beams. Recent studies…

Astrophysics · Physics 2008-11-26 Alice K. Harding , Isabelle A. Grenier , Peter L. Gonthier

In a novel approach in observational high-energy gamma-ray astronomy, observations carried out by imaging atmospheric Cherenkov telescopes provide necessary templates to pinpoint the nature of intriguing, yet unidentified EGRET gamma-ray…

Astrophysics · Physics 2008-11-26 Olaf Reimer , Stefan Funk

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…

Astrophysics · Physics 2009-11-10 Alice Harding , Alexander Muslimov

The vast majority of the high-energy gamma-ray sources discovered by EGRET are still unidentified. Percentages range from 50% at high galactic latitudes, where blazars are responsible for almost all identified sources, to more than 90% near…

Astrophysics · Physics 2009-11-06 P. A. Caraveo

We investigate the radio and gamma-ray beaming properties of normal and millisecond pulsars by selecting two samples from the known populations. The first, Sample G, contains pulsars which are detectable in blind searches of gamma-ray data…

High Energy Astrophysical Phenomena · Physics 2015-05-18 V. Ravi , R. N. Manchester , G. Hobbs

The $\textit{Fermi}$-LAT Collaboration recently presented a new catalog of gamma-ray sources located within the $40^{\circ} \times 40^{\circ}$ region around the Galactic Center~(Ajello et al. 2017) -- the Second Fermi Inner Galaxy (2FIG)…

High Energy Astrophysical Phenomena · Physics 2017-10-31 Richard Bartels , Dan Hooper , Tim Linden , Siddharth Mishra-Sharma , Nicholas L. Rodd , Benjamin R. Safdi , Tracy R. Slatyer

The launch of the Fermi Gamma-ray Space Telescope has heralded a new era in the study of gamma-ray pulsars. The population of confirmed gamma-ray pulsars has gone from 6-7 to more than 60, and the superb sensitivity of the Large Area…

High Energy Astrophysical Phenomena · Physics 2015-05-19 Paul S. Ray , Pablo M. Saz Parkinson

The predictive power of the outer gap model of high energy emission from pulsars is used to analyze the Parkes Multibeam pulsar survey. We find that most of the radio pulsars of the Parkes catalog are not $\gamma$-ray emitters according to…

Astrophysics · Physics 2009-11-07 Diego F. Torres , Sebastian E. Nuza