Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-04-15
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
10 pages, 8 figures, VIII Latin American Symposium on Nuclear Physics and Applications December 15-19, 2009, Santiago, Chile
Scientific paper
The current status of the scientific results of the Auger Observatory will be discussed which include spectrum, anisotropy in arrival directions, chemical composition analyses, and limits on neutrino and photon fluxes. A review of the Observatory detection systems will be presented. Auger has started the construction of its second phase which encompasses antennae for radio detection of cosmic rays, high-elevation telescopes, and surface plus muon detectors. Details will be presented on the latter, AMIGA (Auger Muons and Infill for the Ground Array), an Auger project consisting of 85 detector pairs each one composed of a surface water-Cherenkov detector and a buried muon counter. The detector pairs are arranged in an array with spacings of 433 and 750 m in order to perform a detailed study of the 10^17 eV to 10^19 eV spectrum region. Preliminary results on the performance of the 750 m array of surface detectors and the first muon counter prototype will be presented.
Etchegoyen Alberto
Fröhlich U.
Lucero A.
Sidelnik I.
Wundheiler for the Pierre Auger Collaboration B.
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