Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/69529
Title: The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula
Author: MAGIC Collaboration
Marcote Martin, Benito
Munar i Adrover, Pere
Paredes i Poy, Josep Maria
Paredes Fortuny, Xavier
Ribó Gomis, Marc
Zanin, Roberta
Keywords: Raigs gamma
Púlsars
Telescopis
Astrofísica
Gamma rays
Pulsars
Telescopes
Astrophysics
Issue Date: 23-Feb-2015
Publisher: Elsevier B.V.
Abstract: MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of La Palma, Spain. During summer 2011 and 2012 it underwent a series of upgrades, involving the exchange of the MAGIC-I camera and its trigger system, as well as the upgrade of the readout system of both telescopes. We use observations of the Crab Nebula taken at low and medium zenith angles to assess the key performance parameters of the MAGIC stereo system. For low zenith angle observations, the standard trigger threshold of the MAGIC telescopes is ∼ 50 GeV. The integral sensitivity for point-like sources with Crab Nebula-like spectrum above 220 GeV is (0.66 ± 0.03)% of Crab Nebula flux in 50 h of observations. The angular resolution, defined as the σ of a 2-dimensional Gaussian distribution, at those energies is ≲ 0.07°, while the energy resolution is 16%. We also re-evaluate the effect of the systematic uncertainty on the data taken with the MAGIC telescopes after the upgrade. We estimate that the systematic uncertainties can be divided in the following components: < 15% in energy scale, 11%-18% in flux normalization and ± 0.15 for the energy spectrum power-law slope.
Note: Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.astropartphys.2015.02.005
It is part of: Astroparticle Physics, 2015, vol. 72, p. 76-94
Related resource: http://dx.doi.org/10.1016/j.astropartphys.2015.02.005
URI: http://hdl.handle.net/2445/69529
ISSN: 0927-6505
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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