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T: Fachverband Teilchenphysik

T 103: Kosmische Strahlung 4

T 103.4: Vortrag

Donnerstag, 27. März 2014, 17:30–17:45, P5

Energy Estimation of Cosmic Rays Measured with the Auger Engineering Radio Array — •Christian Glaser, Martin Erdmann, and Klaus Weidenhaupt for the Pierre Auger collaboration — III.Physikalisches Institut A, RWTH Aachen University

The Auger Engineering Radio Array (AERA) is located within the Pierre Auger Observatory and consists currently of 124 autonomous radio stations. Observation of radio signals from cosmic rays is confirmed by the surface detector (SD) stations of the observatory which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For estimating the cosmic-ray energy we use the maximum absolute value of the measured electric field vector corrected for the distance to the shower axis and the incoming direction. Thereby, the first order geo-magnetic and also the second order charge excess emission process is taken into account where their relative strength has been measured with AERA recently. We will present an absolute energy calibration using SD information and data from the first 24 radio stations of the first stage of AERA that are operating since April 2011. We observe that the defined radio energy estimator provides an approximately linear dependency on the cosmic-ray energy.