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Related papers: Recent Searches for Pulsars in Unidentified EGRET …

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The advent of the next generation of gamma-ray experiments, led by GLAST, AGILE, INTEGRAL and a host of atmospheric \v{C}erenkov telescopes coming on line in the next few years, will enable ground-breaking discoveries relating to the…

Astrophysics · Physics 2007-05-23 Matthew G. Baring

In a recent paper, Romero et al. (1999) have presented the results of a positional correlation analysis of the low-latitude unidentified gamma-ray sources in the Third EGRET catalog with complete lists of galactic objects like supernova…

Astrophysics · Physics 2007-05-23 Gustavo E. Romero , Diego F. Torres , P. Benaglia , J. A. Combi , B. Punsly

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

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

Context. A considerable fraction of the gamma-ray sources discovered with the Energetic Gamma-Ray Experiment Telescope (EGRET) remain unidentified. The EGRET sources that have been properly identified are either pulsars or variable sources…

I review the results of radio and X-ray searches for pulsations from young neutron stars, emphasizing work accomplished in the last five years. I cover undirected searches, as well as directed searches of pulsar wind nebulae, EGRET…

Astrophysics · Physics 2007-05-23 Fernando Camilo

The nature of the unidentified gamma-ray point sources in the galactic plane is a long standing puzzle of gamma-ray astronomy. Kaaret and Cottam (1996) showed that 16 of the 25 unidentified gamma-ray point sources near the galactic plane…

Astrophysics · Physics 2007-05-23 Philip Kaaret

We investigate whether gamma-ray pulsars viewed at a large angle to the neutron star magnetic pole could contribute to the new population of galactic unidentified EGRET sources associated with the Gould Belt. The faint, soft nature of these…

Astrophysics · Physics 2009-10-31 Alice K. Harding , Bing Zhang

The identification of celestial gamma-ray sources with astronomical objects or object classes has remained the initial and most fundamental key for understanding their physical nature. The observational characteristic of a gamma-ray emitter…

Astrophysics · Physics 2009-11-11 Olaf Reimer

The 3rd EGRET Catalog of High-energy Gamma-ray Sources contains 170 unidentified sources, and there is great interest in the nature of these sources. One means of determining source class is the study of flux variability on time scales of…

The recent discovery by Paredes et al. (2000) of a persistent microquasar that is positionally coincident with an unidentified gamma-ray source has open the possibility that other sources in the Third EGRET Catalog could be interpreted as…

Astrophysics · Physics 2009-11-07 M. M. Kaufman Bernado , G. E. Romero , I. F. Mirabel

We present a new survey for pulsars in the error boxes of the low-latitude EGRET sources 3EG J1027-5817, 3EG J1800-2338 and 3EG J1810-1032. Although all of these sources have been covered by previous pulsar surveys, the recent discovery of…

Astrophysics · Physics 2009-11-13 M. J. Keith , S. Johnston , M. Kramer , P. Weltevrede , K. Watters , B. Stappers

Radio pulsar PSR J1028-5819 was recently discovered in a high-frequency search (at 3.1 GHz)in the error circle of the EGRET source 3EG J1027-5817. The spin-down power of this young pulsar is great enough to make it very likely the…

High Energy Astrophysical Phenomena · Physics 2011-02-11 LAT Collaboration

Statistical studies indicate that the 271 point sources of high-energy gamma rays belong to two groups: a Galactic population and an isotropic extragalactic population. Many unidentified extragalactic sources are certainly blazars, and it…

Astrophysics · Physics 2009-11-10 P. M. Wallace , S. D. Bloom , M. S. Lewis

Since their discovery at radio wavelengths pulsars have been persistent targets for widespread multi-wave observations throughout optics, radio, X-rays, and high-energy gamma-rays. Observations with the EGRET gamma-ray telescope, on board…

Astrophysics · Physics 2007-05-23 A. Konopelko

I will review the latest developments in understanding the high-energy emission of rotation-powered pulsars and magnetically-powered Anomalous X-ray Pulsars (AXPs) and Soft Gamma-Ray Repeaters (SGRs). These fields have been extremely active…

Astrophysics · Physics 2016-08-30 Alice K. Harding

More than half the sources in the Third EGRET (3EG) catalog have no firmly established counterparts at other wavelengths and are unidentified. Some of these unidentified sources have remained a mystery since the first surveys of the…

Astrophysics · Physics 2015-06-24 R. Mukherjee , J. P. Halpern

The EGRET source 3EG J1835+5918 is the brightest and most accurately positioned of the as-yet unidentified high-energy gamma-ray sources at high Galactic latitude (l,b=89,25). We present a multiwavelength study of the region around it,…

Astrophysics · Physics 2009-10-31 N. Mirabal , J. P. Halpern , M. Eracleous , R. H. Becker

Many of the recently discovered TeV gamma-ray sources are associated with pulsar wind nebulae (PWNe). In fact, they represent the most populous class of Galactic sources at TeV energies. In addition, HESS has also discovered, in a survey of…

Astrophysics · Physics 2009-11-13 Chulhoon Chang , Alexander Konopelko , Wei Cui

We present a catalog of point gamma-ray sources detected by the EGRET detector aboard the Compton Gamma Ray Observatory. We have used the whole gamma-ray dataset of reprocessed photons at energies above 100 MeV together with new Galactic…

Astrophysics · Physics 2009-11-13 Jean-Marc Casandjian , Isabelle A. Grenier