Measurement of the energy spectrum of the BL Lac object PG1553+113 with the MAGIC telescope in 2005 and 2006 [Elektronische Ressource] / von Thomas Hengstebeck

Measurement of the energy spectrum of the BL Lacobject PG1553+113 with the MAGIC Telescope in2005 and 2006DISSERTATIONzur Erlangung des akademischen Gradesdoctor rerum naturalium(Dr. rer. nat.)im Fach Physikeingereicht an derMathematisch-Naturwissenschaftlichen Fakultät IHumboldt-Universität zu BerlinvonHerr Dipl.-Phys. Thomas Hengstebeckgeboren am 19.08.1974 in SiegenPräsident der Humboldt-Universität zu Berlin:Prof. Dr. Christoph MarkschiesDekan der Mathematisch-Naturwissenschaftlichen Fakultät I:Prof. Dr. Christian LimbergGutachter:1. Prof. Dr. Thomas Lohse2. Prof. Dr. Claus Grupen3. Prof. Dr. Hermann Kolanoskieingereicht am: 4. Oktober 2006Tag der mündlichen Prüfung: 1. März 2007AbstractInthisthesisnewdataanalysismethodsfortheMAGICexperimentwereimplemented,which are especially suited for the investigation of low energy γ-ray events. They weresuccessfully tested by means of Monte Carlo studies and applied to observational data ofthe Crab Nebula and of the extragalactic γ-ray source PG1553+113.Thesemethodsextendfromimagecleaningtechniquesandtheutilizationofnewimageparameters to sophisticated g/h-separation and energy estimation approaches. For thefirst time in γ-ray astrophysics the advantages of classification and regression trees wereexploited in order to improve existing ‘classical’ methods.