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Dr Markus Gaug (Universitat Autònoma de Barcelona)11/06/2013 15:00Poster contributionsPosterWe investigate the performance of the MAGIC telescopes under three simulated atmospheric conditions: an increased aerosol content in the lower part of the troposphere, the presence of a cloud and an extremely clean atmosphere. We find that the effective area of the telescopes system is gradually reduced in the presence of varying concentrations of aerosols whereas the energy threshold rises....Go to contribution page
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Michele Doro (University of Padova and INFN)11/06/2013 15:05Poster contributionsPosterCTA is an advanced facility for ground-based gamma-ray astronomy in the GeV-TeV regime, currently in the Preparatory Phase. For a correct reconstruction of gamma-ray energies and fluxes, a precise monitoring of the atmospheric transmission is needed. With this aim, the IFAE and UAB institutes are building a specific Raman lidar. For the optical module, we have foreseen to read-out from the...Go to contribution page
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Dr Dusan Mandat (Institute of Physics of Academy of Science of The Czech Republic)11/06/2013 15:15Poster contributionsPosterFRAM (F/Photometric Robotic Atmospheric Monitor) is a small optical telescope located at the Pierre Auger Observatory equipped with two CCD cameras with Johnson-Bessel UBVRI filters. We will present its observation program - spanning from the measurements of wavelength dependence of extinction (Angstrom coefficient) using the Landolt fields of standard stars, through the rapid monitoring of...Go to contribution page
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Dr Bianca Keilhauer (Karlsruhe Institute of Technology)11/06/2013 15:20Poster contributionsPosterA good knowledge of atmospheric parameters is necessary for the reconstruction of air showers, especially with the fluorescence technique. The Global Data Assimilation System (GDAS) provides altitude-dependent profiles of temperature, pressure, humidity and several other state variables. Every three hours, a new data set is available for the entire globe. These GDAS data are now used in the...Go to contribution page
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Dr Karim Louedec (LPSC, CNRS/IN2P3)11/06/2013 15:25Poster contributionsPosterAerosols play an important role in the attenuation of UV fluorescence light originated when cosmic rays cross the atmosphere, interacting with the atmospheric nitrogen molecules. This light is recorded by the fluorescence detector (FD) of the Pierre Auger Observatory (www.auger.org), composed of 27 telescopes distributed in 4 stations. In one of these stations, named Coihueco (35° 06’ 52.9’’...Go to contribution page
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