Gamma-Hadron-Separation in the MAGIC Experiment

  • Tobias Voigt
  • Roland Fried
  • Michael Backes
  • Wolfgang Rhode
Conference paper
Part of the Studies in Classification, Data Analysis, and Knowledge Organization book series (STUDIES CLASS)

Abstract

The MAGIC-telescopes on the canary island of La Palma are two of the largest Cherenkov telescopes in the world, operating in stereoscopic mode since 2009 (Aleksić et al., Astropart. Phys. 35:435–448, 2012). A major step in the analysis of MAGIC data is the classification of observations into a gamma-ray signal and hadronic background. In this contribution we introduce the data provided by the MAGIC telescopes, which has some distinctive features. These features include high class imbalance, unknown and unequal misclassification costs as well as the absence of reliably labeled training data. We introduce a method to deal with some of these features. The method is based on a thresholding approach (Sheng and Ling 2006) and aims at minimization of the mean square error of an estimator, which is derived from the classification. The method is designed to fit into the special requirements of the MAGIC data.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Tobias Voigt
    • 1
  • Roland Fried
    • 1
  • Michael Backes
    • 2
  • Wolfgang Rhode
    • 2
  1. 1.Faculty of StatisticsTU Dortmund UniversityDortmundGermany
  2. 2.Physics FacultyTU Dortmund UniversityDortmundGermany

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