Discovery of TeV Gamma-Ray Emission from the Cygnus Region of the Galaxy

@article{Abdo2006DiscoveryOT,
  title={Discovery of TeV Gamma-Ray Emission from the Cygnus Region of the Galaxy},
  author={Aous A. Abdo and Barrington Allen and David Berley and Erik Blaufuss and Sabrina Casanova and C. Chen and D. G. Coyne and R. S. Delay and B. L. Dingus and R. W. Ellsworth and L. Fleysher and Roman Fleysher and Iris Gebauer and M. M. Gonz{\'a}lez and Jordan A. Goodman and Elizabeth Hays and Cyrus M. Hoffman and Brian E. Kolterman and L. A. Kelley and C. P. Lansdell and J. T. Linnemann and Julie Mcenery and Allen Mincer and Igor V. Moskalenko and Peter N{\'e}methy and David Noyes and James M. Ryan and Frank W. Samuelson and Pablo M. Saz Parkinson and M. Schneider and Anthony Lee Shoup and G. Sinnis and A. J. Smith and A. W. Strong and Gregory W. Sullivan and Vlasios Vasileiou and Gary P. Walker and D. A. Williams and X. Xu and Gaurang B. Yodh},
  journal={The Astrophysical Journal Letters},
  year={2006},
  volume={658},
  pages={L33 - L36}
}
The diffuse gamma radiation arising from the interaction of cosmic-ray particles with matter and radiation in the Galaxy is one of the few probes available to study the origin of the cosmic rays. Data from the Milagro gamma-ray observatory—a water Cerenkov detector that continuously views ~2 sr of the overhead sky—shows that the brightest extended region in the entire northern sky is the Cygnus region of the Galactic plane. The TeV image of the Cygnus region contains at least one new source… 

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References

SHOWING 1-10 OF 30 REFERENCES

Cosmic-ray electrons and the diffuse gamma-ray spectrum

The bulk of the diffuse galactic gamma-ray emission above a few tens of GeV has been conventionally ascribed to the decay of neutral pions produced in cosmic-ray interactions with interstellar

Discovery of very-high-energy γ-rays from the Galactic Centre ridge

The source of Galactic cosmic rays (with energies up to 1015 eV) remains unclear, although it is widely believed that they originate in the shock waves of expanding supernova remnants. At present the

Detection of TeV Gamma‐Ray Emission from the Cygnus Region of the Galaxy with Milagro Using a New Background Rejection Technique

Milagro is a TeV gamma‐ray observatory that utilizes a large water Cherenkov detector to observe extensive air showers (EAS) produced by high energy particles impacting the Earth’s atmosphere.

Evidence for TeV gamma-ray emission from a region of the galactic plane.

Evidence for a TeV gamma-ray signal from a region of the galactic plane by Milagro, a large-field-of-view water Cherenkov detector for extensive air showers, is reported, consistent with an extrapolation of the EGRET spectrum between 1 and 30 GeV in this galactic region.

EGRET Observations of the Diffuse Gamma-Ray Emission from the Galactic Plane

The high-energy diffuse gamma-ray emission from the Galactic plane, |b| ≤ 10°, is studied using observations from the Energetic Gamma-Ray Experiment Telescope (EGRET) on the Compton Gamma-Ray

Diffuse Galactic Continuum Gamma Rays: A Model Compatible with EGRET Data and Cosmic-Ray Measurements

We present a study of the compatibility of some current models of the diffuse Galactic continuum γ-rays with EGRET data. A set of regions sampling the whole sky is chosen to provide a comprehensive

EGRET Excess of Diffuse Galactic Gamma Rays as Tracer of Dark Matter

The public data from the EGRET space telescope on diffuse Galactic gamma rays in the energy range from 0.1 to 10 GeV are reanalyzed with the purpose of searching for signals of Dark Matter

Anisotropy and Corotation of Galactic Cosmic Rays

Two-dimensional high-precision anisotropy measurement for energies from a few to several hundred teraelectronvolts (TeV) is presented, using the large data sample of the Tibet Air Shower Arrays, revealing finer details of the known anisotropies.

Deeper Chandra Follow-up of Cygnus TeV Source Perpetuates Mystery

A 50 ks Chandra observation of the unidentified TeV source in Cygnus reported by the HEGRA collaboration reveals no obvious diffuse X-ray counterpart. However, 240 pointlike X-ray sources are