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Performance of the MAGIC stereo system obtained with Crab Nebula data

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http://www.sciencedirect.com/science/article/pii/S0927650511002064
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Publication Date
2012-02
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Fonseca González, Mª Victoria
Nieto, Daniel
Satalecka, Konstanzja
Scapin, Valeria
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Elsevier Science BV
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Abstract
MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of La Palma. Since autumn 2009 both telescopes have been working together in stereoscopic mode, providing a significant improvement with respect to the previous single-telescope observations. We use observations of the Crab Nebula taken at low zenith angles to assess the performance of the MAGIC stereo system. The trigger threshold of the MAGIC telescopes is 50 - 60 GeV. Advanced stereo analysis techniques allow MAGIC to achieve a sensitivity as good as (0.76 +/- 0.03)% of the Crab Nebula flux in 50 h of observations above 290 GeV. The angular resolution at those energies is better than similar to 0.07 degrees. We also perform a detailed study of possible systematic effects which may influence the analysis of the data taken with the MAGIC telescopes. (C) 2011 Elsevier B.V. All rights reserved.
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© 2011 Elsevier B.V. We would like to thank the Instituto de Astrofísica de Canarias for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma. The support of the German BMBF and MPG, the Italian INFN, the Swiss National Fund SNF, and the Spanish MICINN is gratefully acknowledged.This work was also supported by the Marie Curie program, by the CPAN CSD2007-00042 and MultiDark CSD2009-00064 projects of the Spanish Consolider-Ingenio 2010 programme, by grant DO02-353 of the Bulgarian NSF, by grant 127740 of the Academy of Finland, by the YIP of the Helmholtz Gemeinschaft, by the DFG Cluster of Excellence “Origin and Structure of the Universe”, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, and by the Polish MNiSzW grant 745/N-HESS-MAGIC/2010/0.
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Electricidad , Electrónica (Física) , Física nuclear
Unesco subjects
2202.03 Electricidad , 2207 Física Atómica y Nuclear
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https://hdl.handle.net/20.500.14352/43823
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