Aachen 2019 – scientific programme
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T: Fachverband Teilchenphysik
T 39: Gamma-Astronomie I
T 39.9: Talk
Tuesday, March 26, 2019, 18:10–18:25, S14
Very Large Zenith Angle Observations with the MAGIC Telescopes — •Juliane van Scherpenberg1, Razmik Mirzoyan1, Ievgen Vovk1, Michele Peresano1, Darko Zaric2, Jürgen Besenrieder1, and Masahiro Teshima1 — 1Max-Planck Institut für Physik, München, Deutschland — 2University of Split, Croatia
The MAGIC Telescopes are a system of two Imaging Air Cherenkov Telescopes (IACTs) located at the Roque de los Muchachos Observatory on the Canary Island of La Palma. MAGIC can observe very-high energy (VHE) gamma rays from around 50 GeV to 50 TeV. In the last years, MAGIC performed observations at very large zenith angles (VLZA) to extend the spectra up to the highest gamma-ray energy regime. However, measurements of this kind bear many challenges. The calibration of the atmosphere needs to be well understood as well as more technical restrictions concerning for example the image size of the shower and the azimuthal dependence of the stereo reconstruction quality. I will present the methods we use to account for these difficulties and show the first results of VLZA observations of the Crab Nebula.