Heidelberg 2007 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 301: Kosmische Strahlung II
T 301.5: Vortrag
Mittwoch, 7. März 2007, 17:45–18:00, INF 308 Gr. HS
Method to deduce the energy spectrum by the Pierre Auger Observatory — •Ioana Maris1, Johannes Bluemer1,2, Markus Roth1, Talianna Schmidt1, Fabian Schuessler1, and Michael Unger1 for the Pierre Auger collaboration — 1Universitaet Karlsruhe — 2Forschungszentrum Karlsruhe
Taken into account the great advantage of having a hybrid detector it has been developed a method, simulation independent, to determine the energy of the comic rays recorded by the surface detector of the Pierre Auger Oservatory. The method assumes that the cosmic ray flux has the same distribution in zenith angle for all energy ranges. Therefore one can relate the calorimetric measurement of the fluorescence detector of the CR energy with a SD quantity, e.g. shower size at 1000m distance from the core, corrected for the different attenuations in the atmosphere. The method of measuring and calibrating the primary energy and the influence of reconstruction uncertainties on the energy spectrum are presented.