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30th International Cosmic Ray Conference

3-11 July 2007
Merida, Mexico
Mexico/General timezone
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Contribution Poster

Merida, Mexico - Regency (Hyatt)
OG.2.7
Posters 3 + Coffee

Geomagnetic Field Effects on the Imaging Air Shower Cherenkov Technique

Speakers

  • Mr. S.C. COMMICHAU

Primary authors

Co-authors

  • Dr. A. BILAND (ETH Zürich, CH-8093 Hönggerberg, Switzerland)
  • Dr. D. KRANICH (ETH Zürich, CH-8093 Hönggerberg, Switzerland)
  • Dr. A. MORALEJO (Institut de Física d'Altes Energies, Edifici Cn., E-08193 Bellaterra (Barcelona), Spain)
  • Ms. R. DE LOS REYES (Universidad Complutense, E-28040 Madrid, Spain)
  • Dr. D. SOBCZYNSKA (Division of Experimental Physics, University of Lodz, PL-90236 Lodz, Poland)

Files

Abstract content

Imaging Air Cherenkov Telescopes (IACTs) detect the Cherenkov light flashes of Extended Air Showers (EAS) triggered by VHE gamma-rays impinging on the Earth's atmosphere. Due to the overwhelming background from hadron induced EAS, the discrimination of the rare gamma-like events is rather difficult, in particular at energies below 100 GeV. The influence of the Geomagnetic Field (GF) on the EAS development can further complicate this discrimination and, in addition, also systematically affect the gamma-efficiency and energy resolution of an IACT. Here we present the results from dedicated Monte Carlo (MC) simulations for the MAGIC telescope site, show the GF effects on real data as well as possible corrections for these effects.

If this papers is presented for a collaboration, please specify the collaboration

MAGIC

Reference

Proceedings of the 30th International Cosmic Ray Conference; Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, Lukas Nellen, Federico A. Sánchez, José F. Valdés-Galicia (eds.); Universidad Nacional Autónoma de México, Mexico City, Mexico, 2008; Vol. 3 (OG part 2), pages 1357-1360