Göttingen 2012 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 99: Kosmische Strahlung 1

T 99.2: Vortrag

Montag, 27. Februar 2012, 17:05–17:20, ZHG 006

Studying the shower front curvature of Extensive Air Showers with the Pierre Auger Observatory — •Eugene Mawuko Dorledzie, Markus Risse, and Mariangela Settimo — Universität Siegen, Siegen, Germany

The shape of the shower front in Extensive Air Showers (EAS) is related to the properties of the primary cosmic ray and to the shower development in the atmosphere. In particular the radius of curvature for ultra high energy cosmic rays (above 10¹⁸ eV) can be estimated using the large statistics of events collected by the Pierre Auger Observatory. The Observatory, located in Malargue (Argentina), consists of a Surface Detector (SD) and a Fluorescence Detector (FD) that can be combined in a hybrid detection mode providing precise measurements of the geometry and the energy of the primary particle. The surface detectors sample the lateral distribution and the arrival time of particles at the ground. These information are used to study the curvature of the shower front and its dependence on shower parameters. Results and implications for the reconstruction will be discussed.

Supported by BMBF Verbundforschung Astroteichenphysik