Observation of TeV gamma rays from the Crab Nebula using the atmospheric Cerenkov imaging technique

  title={Observation of TeV gamma rays from the Crab Nebula using the atmospheric Cerenkov imaging technique},
  author={Trevor C. Weekes and Michael F. Cawley and David J. Fegan and Kenneth Gerard Gibbs and A. M. Hillas and P. W. Kowk and Richard C. Lamb and Debra Lewis and Daryl Jack Macomb and N. A. Porter and Philip T. Reynolds and Giuseppe Vacanti},
  journal={The Astrophysical Journal},
The Whipple Observatory 10 m reflector, operating as a 37 pixel camera, has been used to observe the Crab Nebula in TeV gamma rays. By selecting gamma-ray images based on their predicted properties, more than 98% of the background is rejected; a detection is reported at the 9.0 a level, corresponding to a flux of 1.8 x 10 11 photons cm s 1 above 0.7 TeV (with a factor of 1.5 uncertainty in both flux and energy). Less than 25% of the observed flux is pulsed at the period of PSR 0531. There is no… 
Detection of Gamma Rays of up to 50 TeV from the Crab Nebula
Gamma rays with energies greater than 7 TeV from the Crab pulsar/Crab Nebula have been observed at large zenith angles, with the imaging atmospheric technique from Woomera, South Australia. CANGAROO
The Spectrum of TeV Gamma Rays from the Crab Nebula
The spectrum of gamma rays from the Crab Nebula has been measured in the energy range 500 GeV-8 TeV at the Whipple Observatory by the atmospheric Cerenkov technique. Two methods of analysis that were
Observation of TeV Gamma Rays from the Crab Nebula with Milagro Using a New Background Rejection Technique
The recent advances in TeV gamma-ray astronomy are largely the result of the ability to differentiate between extensive air showers generated by gamma rays and hadronic cosmic rays. Air Cerenkov
Search for Pulsed TeV Gamma-Ray Emission from the Crab Pulsar
We present the results of a search for pulsed TeV emission from the Crab pulsar using the Whipple Observatory's 10-m gamma-ray telescope. The direction of the Crab pulsar was observed for a total of
The Energy Spectrum of TeV Gamma Rays from the Crab Nebula as Measured by the HEGRA System of Imaging Air Cerenkov Telescopes
The Crab Nebula has been observed by the HEGRA (High-Energy Gamma-Ray Astronomy) stereoscopic system of imaging air Cerenkov telescopes (IACTs) for a total of ~200 hr during two observational
Detection of Pulsed Gamma Rays Above 100 GeV from the Crab Pulsar
This detection constrains the mechanism and emission region of gamma-ray radiation in the pulsar’s magnetosphere and requires that these gamma rays be produced more than 10 stellar radii from the neutron star.
Observations of the Crab Nebula with the Whipple 10 m Telescope
Due to the strong and steady TeV gamma-ray emission from the Crab Nebula supernova remnant, its measured flux and energy spectrum can be used to verify the calibration and data reduction methods
The Crab Nebula and Pulsar between 500 GeV and 80 TeV: Observations with the HEGRA Stereoscopic Air Cerenkov Telescopes
The Crab supernova remnant has been observed regularly with the stereoscopic system of five imaging air Cerenkov telescopes that was part of the High Energy Gamma Ray Astronomy (HEGRA) experiment. In
Very High Energy Gamma Rays from the VELA Pulsar Direction
We have observed the Vela pulsar region at TeV energies using the 3.8 m imaging Čerenkov telescope near Woomera, South Australia between 1993 January and 1995 March. Evidence of an unpulsed gamma-ray


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