Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 65: Gammaastronomie III

T 65.6: Talk

Tuesday, March 1, 2016, 18:05–18:20, VMP11 HS

The influence of night sky background on calibration and analysis in H.E.S.S. — •Eva Leser¹ and H.E.S.S. Collaboration² — ¹Potsdam University — ²https://www.mpi-hd.mpg.de/hfm/HESS/

In some regions of the galactic plane, background light by stars (night sky background) poses a severe challenge for the detection of gamma-ray sources. Thorough tests are needed to ensure a good quality of the data analysis, especially in regions with both a strong and inhomogeneous background. Investigation of the influence on calibration and data analysis is started at an early stage in data processing. Different cleaning levels were tested and the event loss rate was evaluated. It is shown that for regions with strong and inhomogeneous night sky background and a powerful source an increased cleaning level is beneficial.