Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 111: Experimentelle Techniken der Astroteilchenphysik III

T 111.4: Talk

Wednesday, March 30, 2011, 17:30–17:45, 30.95: 001

TRUEE: Regularized Unfolding for Gamma-Ray Astronomy — •Marlene Doert¹, Natalie Milke¹, Daniel Mazin², and Stefan Klepser² — ¹TU Dortmund — ²IFAE, Bellaterra, Spain

The reconstruction of energy spectra from the observables of air-showers is one of the main tasks during the data analysis of many astroparticle experiments. The new unfolding program TRUEE, which is based on V. Blobel’s RUN, offers the possibility to perform a regularized unfolding of energy spectra. It uses up to 3 observables, treats the background of the measurement and takes into account the correction for the limited acceptance of the detector. After a successful application to IceCube measurements, this method is now being used for gamma-ray data. The program has been integrated into the analysis chain of the MAGIC experiment. This includes the development of an interface between the MAGIC and TRUEE data formats, the optimal choice of observed parameters to be used in the unfolding, and subsequent functionalities like fits to the obtained spectrum. The functionality of the present implementation and an example application will be presented and an outlook for further enhancements will be given.