The CAT Imaging Telescope for Very-High-Energy Gamma-Ray Astronomy

The CAT (Cherenkov Array at Themis) imaging telescope, equipped with a very-high-definition camera (546 fast phototubes with 0.12 degrees spacing surrounded by 54 larger tubes in two guard rings) started operation in Autumn 1996 on the site of the former solar plant Themis (France). Using the atmospheric Cherenkov technique, it detects and identifies very high energy gamma-rays in the range 250 GeV to a few tens of TeV. The instrument, which has detected three sources (Crab nebula, Mrk 421 and Mrk 501), is described in detail.Comment: 24 pages, 15 figures. submitted to Elsevier Preprin

The CAT Imaging Telescope for Very-High-Energy Gamma-Ray Astronomy

The CAT (Cherenkov Array at Th'emis) imaging telescope, equipped with a veryhigh -definition camera (546 fast phototubes with 0:12 ffi spacing surrounded by 54 Preprint submitted to Elsevier Preprint 31 March larger tubes in two guard rings) started operation in Autumn 1996 on the site of the former solar plant Th'emis (France). Using the atmospheric Cherenkov technique, it detects and identifies very high energy fl-rays in the range 250 GeV to a few tens of TeV. The instrument, which has detected three sources (Crab nebula, Markarian 421 and Markarian 501), is described in detail. Key words: Gamma-Ray Astronomy, Atmospheric Cherenkov detector 1 Introduction The recent development of Very-High-Energy Gamma-Ray Astronomy is essentially due to Atmospheric Cherenkov Telescopes (ACT). Since 1988, two arrays of Cherenkov detectors, ASGAT [1] and THEMISTOCLE [2] have been operated on the site of the former solar plant "Th'emis", close to Font-Romeu in the French Pyrenees. They consist of..

Spectrum of TeV gamma-rays from the Crab Nebula by the CAT Cherenkov Imaging Telescope

For an anthropology of communication What do we mean by “anthropology of communication”? The term is used for the ethnographic analysis of human communication as well as for behavioural changes due to the application of new information technologies. We put forward an introduction (below), to be followed by seven texts: three reflections on “anthropology”, three on “communication” and one concerned with the overlap between these two concepts. Starting with December 2004, these papers will be accessible at the rate of one paper a month. Our intention is to search for all terms associated with “anthropology” and “communication”, to create an inventory of representative semantic fields for them, to indicate current overlaps established by colleagues carrying out communications and information research as well as possible overlaps in the future

Spectrum of TeV gamma-rays from the Crab Nebula by the CAT Cherenkov Imaging Telescope

For an anthropology of communication What do we mean by “anthropology of communication”? The term is used for the ethnographic analysis of human communication as well as for behavioural changes due to the application of new information technologies. We put forward an introduction (below), to be followed by seven texts: three reflections on “anthropology”, three on “communication” and one concerned with the overlap between these two concepts. Starting with December 2004, these papers will be accessible at the rate of one paper a month. Our intention is to search for all terms associated with “anthropology” and “communication”, to create an inventory of representative semantic fields for them, to indicate current overlaps established by colleagues carrying out communications and information research as well as possible overlaps in the future

Genome Wide Association Study of two phenology traits (flowering time and maturity date) in apple

International audienc

Deciphering the genetic determinism of flowering/harvest period and several fruit sensory quality traits in apple by a Genome-Wide Association approach

National audienc