1,246 research outputs found
Radio Pulses from Cosmic Ray Air Showers
The first experiment in which radio emission was detected from high energy
particles is described. An array of dipoles was operated by a team of British
and Irish physicists in 1964-5 at the Jodrell Bank Radio Observatory in
conjunction with a simple air shower trigger. The array operated at 44 MHz with
2.75 MHz bandwidth. Out of 4,500 triggers a clear bandwidth-limited radio pulse
was seen in 11 events. This corresponded to a cosmic ray trigger threshold of
5x10^16 eV and was of intensity close to that predicted. The early experiments
which followed this discovery and their interpretation is described.Comment: 11 pages, 4 figures. Proceedings of the First International Workshop
on Radio Detection of High Energy Particles, UCLA, Nov 16-18, 2000, to be
published by the AI
An Observatory to Study 10 (10) to 10 (17) EV Gamma Rays
A facility is described which incorporates many of the best features of existing gamma ray telescopes at a single site. In addition to reducing the flux sensitivity in some energy ranges, it permits the measurements of the energy spectrum over seven decades of energy
Revealing the Dark TeV Sky: The Atmospheric Cherenkov Imaging Technique for Very High Energy Gamma-ray Astronomy
The Atmospheric Cherenkov Imaging Technique has opened up the gamma-ray
spectrum from 100 GeV to 50 TeV to astrophysical exploration. The development
of the technique (with emphasis on the early days) is described as are the
basic principles underlying its application to gamma-ray astronomy. The current
generation of arrays of telescopes, in particular, VERITAS is briefly
described.Comment: To be published in the Proceedings of the International Workshop on
"Energy Budget in the High Energy Universe", Kashiwa, Japan, February 22-24,
200
Very High Energy Gamma Ray Extension of GRO Observations
The membership, progress, and invited talks, publications, and proceedings made by the Whipple Gamma Ray Collaboration is reported for june 1990 through May 1994. Progress was made in the following areas: the May 1994 Markarian Flare at Whipple and EGRET (Energetic Gamma Ray Experiment Telescope) energies; AGN's (Active Galactic Nuclei); bursts; supernova remnants; and simulations and energy spectra
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