Observations of the Crab Nebula with the HEGRA system of IACTs in convergent mode using a topological trigger

@inproceedings{Lucarelli2002ObservationsOT,
  title={Observations of the Crab Nebula with the HEGRA system of IACTs in convergent mode using a topological trigger},
  author={Francesca Lucarelli and Alexander K. Konopelko and Felix A. Aharonian and W. Hofmann and Antje Kohnle and H. Lampeitl and Victoria Fonseca},
  year={2002}
}
Routine observations of the Crab Nebula for a total of about 250 hrs, performed with the HEGRA stereoscopic system of 5 imaging atmospheric Čerenkov telescopes in the standard operational mode, have proven the energy threshold of the system to be 500 GeV for small zenith angles (θ ≤ 20◦). A topological trigger applied along with the convergent observational mode allows to reduce noticeably the energy threshold of the system down to 350 GeV. Here we present the relevant Monte Carlo simulations… CONTINUE READING
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