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Using the photons from the Crab Nebula seen by GLAST to calibrate MAGIC and the imaging air Cherenkov telescopes |
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| Authors: | D Bastieri C Bigongiari E Bisesi G Busetto A De Angelis B De Lotto T Lenisa F Longo M Mariotti A Moralejo D Pascoli L Peruzzo R Rando A Saggion P Sartori V Scalzotto |
| Institution: | aUniversità di Padova and INFN Padova, I-35131 Padova, Italy bUniversità di Trieste and INFN Trieste, I-34127 Trieste, Italy cUniversità di Udine and INFN Trieste, I-33100 Udine, Italy |
| Abstract: | In this article we discuss the possibility of using the observations by GLAST of standard gamma sources, as the Crab Nebula, to calibrate imaging air Cherenkov detectors, MAGIC in particular, and optimise their energy resolution. We show that at around 100 GeV the absolute energy calibration uncertainty of Cherenkov telescopes can be reduced to  10% by means of such cross-calibration procedure. |
| Keywords: | Gamma-ray astronomy Cherenkov detectors |
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