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Related papers: Pulsars and Their Nebulae as EGRET Sources

200 papers

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…

We apply a likelihood analysis to pulsar detections, pulsar upper limits, and diffuse background measurements from the OSSE and EGRET instruments on the Compton Gamma Ray Observatory to constrain the luminosity law for gamma-ray pulsars and…

Astrophysics · Physics 2009-10-31 M. A. McLaughlin , J. M. Cordes

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 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…

High Energy Astrophysical Phenomena · Physics 2009-12-21 L. Guillemot , Fermi LAT Collaboration

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 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 present the results of radio searches for pulsars within unidentified EGRET source error boxes. Using the Parkes multibeam system, we have surveyed 56 sources at Galactic latitudes |b| > 5 deg which do not appear to be associated with…

Here we investigate to what extent unresolved \gr pulsars contribute to the galactic diffuse emission, and further whether unresolved \gr pulsars can be made responsible for the excess of diffuse galactic emission above 1 GeV which has been…

Astrophysics · Physics 2009-10-30 Martin Pohl

We describe the properties of the blazars detected by EGRET and summarize the results on the calculations of the evolution and luminosity function of these sources. Of the large number of possible origins of extragalactic diffuse gamma-ray…

Astrophysics · Physics 2009-10-31 R. Mukherjee , J. Chiang

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

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

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…

EGRET can now study six pulsars since the recent detection of PSR B1951+32. Careful analysis of the three brightest pulsars shows that gamma rays are emitted through essentially the entire rotation. This calls into question the previous…

Astrophysics · Physics 2011-04-15 P. L. Nolan , the EGRET team

Population studies of EGRET gamma-ray sources indicate that there is a distinctive population of bright sources at low galactic latitudes. The sources have a distribution consistent with that of young galactic objects, with a concentration…

Astrophysics · Physics 2009-11-10 Valenti Bosch-Ramon , Gustavo E. Romero , Josep M. Paredes

Luminosities and uxes of the expected population of galactic gamma-ray pulsars become foreseeable if physical distributions at birth and evolutive history are assigned. In this work we estimate the contribution of pulsar uxes to the…

Astrophysics · Physics 2015-06-24 E. Bisesi

The recent detection of extended $\gamma$-ray emission around middle-aged pulsars is interpreted as inverse-Compton scattering of ambient photons by electron-positron pairs escaping the pulsar wind nebula, which are confined near the system…

High Energy Astrophysical Phenomena · Physics 2024-11-12 S. Abdollahi , F. Acero , A. Acharyya , A. Adelfio , M. Ajello , L. Baldini , J. Ballet , C. Bartolini , J. Becerra Gonzalez , R. Bellazzini , E. Bissaldi , R. Bonino , P. Bruel , R. A. Cameron , P. A. Caraveo , D. Castro , E. Cavazzuti , C. C. Cheung , N. Cibrario , S. Ciprini , G. Cozzolongo , P. Cristarella Orestano , A. Cuoco , S. Cutini , F. D'Ammando , N. Di Lalla , A. Dinesh , L. Di Venere , A. Domínguez , A. Fiori , S. Funk , P. Fusco , F. Gargano , C. Gasbarra , D. Gasparrini , S. Germani , F. Giacchino , N. Giglietto , M. Giliberti , F. Giordano , M. Giroletti , D. Green , I. A. Grenier , L. Guillemot , S. Guiriec , R. Gupta , M. Hashizume , E. Hays , J. W. Hewitt , D. Horan , X. Hou , T. Kayanoki , M. Kuss , A. Laviron , M. Lemoine-Goumard , A. Liguori , J. Li , I. Liodakis , P. Loizzo , F. Longo , F. Loparco , L. Lorusso , M. N. Lovellette , P. Lubrano , S. Maldera , D. Malyshev , G. Martí-Devesa , P. Martin , M. N. Mazziotta , I. Mereu , P. F. Michelson , N. Mirabal , W. Mitthumsiri , T. Mizuno , P. Monti-Guarnieri , M. E. Monzani , A. Morselli , I. V. Moskalenko , M. Negro , N. Omodei , M. Orienti , E. Orlando , D. Paneque , G. Panzarini , M. Persic , M. Pesce-Rollins , R. Pillera , T. A. Porter , S. Rainò , R. Rando , M. Razzano , A. Reimer , O. Reimer , M. Rocamora Bernal , M. Sánchez-Conde , P. M. Saz Parkinson , D. Serini , C. Sgrò , E. J. Siskind , D. A. Smith , G. Spandre , P. Spinelli , A. W. Strong , D. J. Suson , H. Tajima , J. B. Thayer , D. F. Torres , J. Valverde , Z. Wadiasingh , K. Wood , G. Zaharijas

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

At least three pulsars in supernova remnants were detected at E > 100 MeV by EGRET on the Compton Gamma Ray Observatory. Efforts to search for additional pulsars in the EGRET data have been unsuccessful due to limited statistics. An example…

Astrophysics · Physics 2007-05-23 D. J. Thompson , S. W. Digel , P. L. Nolan , O. Reimer

The vast majority of the celestial gamma-ray sources detected so far have not yet been identified with secure counterparts at other wavelenghts. Here we report the preliminary evidence of a probable association between galaxy clusters and…

Astrophysics · Physics 2009-11-07 Sergio Colafrancesco

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