Demystifying an Unidentified EGRET Source by VHE Gamma-ray Observations
Title | Demystifying an Unidentified EGRET Source by VHE Gamma-ray Observations PDF eBook |
Author | |
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Pages | 4 |
Release | 2007 |
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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 sources. Using GeV-photons detected by CGRO EGRET and taking advantage of high spatial resolution images from H.E.S.S. observations, we were able to shed new light on the EGRET observed gamma-ray emission in the Kookaburra complex, whose previous coverage in the literature is some-what contradictory. 3EGJ1420-6038 very likely accounts for two GeV gamma-ray sources (E>1 GeV), both in positional coincidence with the recently reported pulsar wind nebulae (PWN) by HESS in the Kookaburra/Rabbit complex. PWN associations at VHE energies, supported by accumulating evidence from observations in the radio and X-ray band, are indicative for the PSR/plerionic origin of spatially coincident, but still unidentified Galactic gamma-ray sources from EGRET. This not only supports the already suggested connection between variable, but unidentified low-latitude gamma-ray sources with pulsar wind nebulae (3EGJ1420-6038 has been suggested as PWN candidate previously), it also documents the ability of resolving apparently confused EGRET sources by connecting the GeV emission as measured from a large-aperture space-based gamma-ray instrument with narrow field-of-view but superior spatial resolution observations by ground-based atmospheric Cherenkov telescopes, a very promising identification technique for achieving convincing individual source identifications in the era of GLAST-LAT.
A Very High Energy Gamma-ray Survey of Unidentified Egret Sources (PHD).
Title | A Very High Energy Gamma-ray Survey of Unidentified Egret Sources (PHD). PDF eBook |
Author | Stephen Fegan |
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Pages | 0 |
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The Energetic Gamma-Ray Experiment Telescope (EGRET) Science Symposium
Title | The Energetic Gamma-Ray Experiment Telescope (EGRET) Science Symposium PDF eBook |
Author | Carl Fichtel |
Publisher | |
Pages | 354 |
Release | 1990 |
Genre | Astrophysics |
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Observations of the Isotropic Diffuse Gamma-ray Background with the Egret Telescope
Title | Observations of the Isotropic Diffuse Gamma-ray Background with the Egret Telescope PDF eBook |
Author | Thomas Daniel Willis |
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Pages | 388 |
Release | 1996 |
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The Distribution of EGRET Unidentified Sources in the Galactic Plane
Title | The Distribution of EGRET Unidentified Sources in the Galactic Plane PDF eBook |
Author | Torafumi Miyagi |
Publisher | |
Pages | 278 |
Release | 2003 |
Genre | Gamma ray astronomy |
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Signal Source Separation and Decomposition of the EGRET Gamma Ray Data
Title | Signal Source Separation and Decomposition of the EGRET Gamma Ray Data PDF eBook |
Author | Christian Parker Minor |
Publisher | |
Pages | 696 |
Release | 2004 |
Genre | Gamma ray astronomy |
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Gamma-ray Pulsars as Candidates for the Unidentified EGRET Sources
Title | Gamma-ray Pulsars as Candidates for the Unidentified EGRET Sources PDF eBook |
Author | Klara Elteto |
Publisher | |
Pages | 42 |
Release | 2001 |
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