Göttingen 2012 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 103: Kosmische Strahlung 5
T 103.9: Vortrag
Donnerstag, 1. März 2012, 18:45–19:00, ZHG 005
Measurement of the cosmic electron spectrum with the MAGIC telescopes — •Daniela Borla Tridon — Max Planck Institut fuer Physik, Munich, Germany
Cosmic electrons with energies in the TeV range lose their energy rapidly through synchrotron radiation and inverse Compton processes, resulting in a relatively short lifetime (∼105 years). They are only visible from comparatively nearby sources (< 1 kpc). Unexpected features in their spectrum at a few hundreds GeV, as measured by several experiments (ATIC, Fermi and H.E.S.S. among others), might be caused by local sources such as pulsars or dark matter annihilation/decay. In order to investigate these possibilities, new measurements in the TeV energy region were needed. Since the completion of the stereo system, the MAGIC Cherenkov experiment is sensitive enough to measure the cosmic electron flux between a few hundred GeV and few TeV. The electron signal has to be extracted from the overwhelming background of hadronic cosmic rays calculated in Monte Carlo simulations. Here we present the the cosmic electron spectrum measured with the MAGIC telescopes.