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Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 59: Gammaastronomie 3

T 59.9: Talk

Tuesday, March 28, 2017, 18:55–19:10, H 2

FACT - Long-Term Analysis of the Crab Nebula as Calibration Source — •Jonas Oberkirch for the FACT collaboration — TU Dortmund, Germany

The First G-APD Cherenkov Telescope (FACT) pioneers the use of silicon photo multipliers for Imaging Atmospheric Cherenkov telescopes (IACTs). To prove their usability, FACT's performance needs to be compared to other IACTs. For this comparison, the Crab Nebula is used as a "standard candle" due to its brightness and constant flux at TeV energies. FACT has been taking data since seeing first light in 2011.

IACTs see about 1000 hadronic air showers per photon-induced shower which are considered background. Since the amount of data taken during measurements is huge, machine learning methods are very well suited in the analysis for signal-background-separation and unfolding of the energy spectrum.

This analysis aims to extend the research done on one year of crab data to more of the data available and produce an energy spectrum as published before, taking into account changed hardware configurations, to estimate the performance of FACT.

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