A Top-Down Technique as an Analysis Tool for Auger Fluorescence Data

Details A Top-Down Technique as an Analysis Tool for Auger Fluorescence Data A Top-Down Technique as an Analysis Tool for Auger Fluorescence Data

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....2..555g&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

The Auger Observatory aims at the detection of Ultra-High-Energy CosmicRays by employing an array of ground-particle counters overviewed by atmospheric fluorescence telescopes -a mini prototype of which has been operative since 12/2001 near the town of Malargue in the province of Mendoza, Argentina. Conventional bottomup fluorescence data analyses techniques convert photons entering the telescope's diaphragm to shower size; energy and primary composition are then estimated by fitting a Gaisser-Hillas distribution. In this paper we discuss the potential capabilities of a top-down technique based on a robust primary energy estimator. Such technique uses hundreds of very fast-simulated shower longitudinal profiles and calculates their corresponding photon profiles seen by the telescopes. Primary energy and composition follow from maximum likelihood or chi-squared analyses.

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