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The MAGIC experiment, a very large Imaging Air Cherenkov Telescope (IACT) with sensitivity to low energy (E < 100 GeV) VHE gamma rays, has been operated since 2004. It has been found that the gamma/hadron separation in IACTs becomes much…

Instrumentation and Methods for Astrophysics · Physics 2015-05-14 Dorota Sobczynska

Over the last decade, the Imaging Air Cerenkov technique has proven itself to be an extremely powerful means to study very energetic gamma-radiation from a number of astrophysical sources in a regime which is not practically accessible to…

Astrophysics · Physics 2010-11-24 I. de la Calle Perez , S. D. Biller

Imaging atmospheric Cherenkov telescopes (IACTs) such as the Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes endeavor to reach the lowest possible energy threshold. In doing so the trigger system is a key element. Reducing…

Instrumentation and Methods for Astrophysics · Physics 2016-05-04 Rubén López-Coto , Daniel Mazin , Riccardo Paoletti , Oscar Blanch Bigas , Juan Cortina

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…

The MAGIC telescopes, located at Observatorio El Roque de los Muchachos (La Palma, Spain) are two Imaging Air Cherenkov Telescopes observing the Very High Energy (VHE) gamma rays. They are run by an international collaboration composed of…

Instrumentation and Methods for Astrophysics · Physics 2025-07-31 Oscar Blanch , Julian Sitarek

Imaging atmospheric Cherenkov telescopes (IACTs) detect gamma rays by measuring the Cherenkov light emitted by secondary particles in the air shower when the gamma rays hit the atmosphere. At low energies, the limited amount of Cherenkov…

In order to better utilize the information contained in the shower images generated by imaging Cherenkov telescopes (IACTs) equipped with cameras with small pixels, images are fit to a parametrization of image shapes gained from Monte Carlo…

Astrophysics · Physics 2007-05-23 M. Ulrich , A. Daum , G. Hermann , W. Hofmann

The standardisation of gamma-ray astronomical data emerged in recent years as a necessity for the future generation of gamma-ray observatories. Nevertheless, adopting a common format for gamma-ray instruments can already benefit the current…

Instrumentation and Methods for Astrophysics · Physics 2023-02-28 Cosimo Nigro

The current generation of Imaging Atmospheric telescopes (IACTs) has demonstrated the power of the technique in an energy range between ~100 GeV up to several tens of TeV. At the high-energy end, these instruments are limited by photon…

High Energy Astrophysical Phenomena · Physics 2009-01-21 S. Funk , J. A. Hinton

With its diameter of 17m, the MAGIC telescope is the largest Cherenkov detector for gamma ray astrophysics. It is sensitive to photons above an energy of 30 GeV. MAGIC started operations in October 2003 and is currently taking data. This…

A significant source of noise for Imaging Atmospheric Cherenkov Telescopes (IACTs), which are designed to measure air showers caused by astrophysical gamma rays, is optical light emitted from the night sky. This Night Sky Background (NSB)…

Instrumentation and Methods for Astrophysics · Physics 2025-06-30 Gerrit Roellinghoff , Samuel T. Spencer , Stefan Funk

Current Imaging Atmospheric Cherenkov Telescopes for Very High Energy $\gamma$-ray astrophysics are pointing instruments with a Field of View up to a few tens of sq deg. We propose to build an array of two non-steerable (drift) telescopes.…

Instrumentation and Methods for Astrophysics · Physics 2015-08-26 J. Cortina , R. López-Coto , A. Moralejo

Context. We are operating an elastic LIDAR for the monitoring of atmospheric conditions during regular observations of the MAGIC Telescopes. Aims. We present and evaluate methods to convert aerosol extinction profiles, obtained with the…

Large Array of imaging atmospheric Cherenkov Telescope (LACT) is an array of 32 Cherenkov telescopes with 6-meter diameter mirrors to be constructed at the LHAASO site, aiming to enhance our understanding of ultra-high energy gamma ray…

High Energy Astrophysical Phenomena · Physics 2025-09-26 Zhipeng Zhang , Ruizhi Yang , Shoushan Zhang

Current optimization of ground-based Cherenkov telescopes arrays, also called Imaging Air Cherenkov Telescope (IACT) arrays, relies on brute-force human-driven approaches based on large simulations requiring both high amount of storage and…

Instrumentation and Methods for Astrophysics · Physics 2026-01-13 Cyril Alispach , Matthieu Heller , Teresa Montaruli

MAGIC is a stereoscopic system of two 17m diameter Imaging Air Cherenckov Telescopes (IACTs) for $\gamma$-ray astronomy. Lowering the energy threshold of IACTs is crucial for the observation of Pulsars, high redshift AGNs and GRBs. A lower…

Instrumentation and Methods for Astrophysics · Physics 2014-04-17 J. R. García , F. Dazzi , D. Häfner , D. Herranz , M. López , M. Mariotti , R. Mirzoyan , D. Nakajima , T. Schweizer , M. Teshima

Imaging Atmospheric Cherenkov Telescopes (IACTs) currently in operation feature large mirrors and order of 1 ns time response to signals of a few photo-electrons produced by optical photons. This means that they are ideally suited for…

Instrumentation and Methods for Astrophysics · Physics 2019-11-15 V. A. Acciari , M. I. Bernardos , E. Colombo , J. L. Contreras , J. Cortina , C. Delgado , C. Diaz , D. Fink , M. Mariotti , S. Mangano , R. Mirzoyan , M. Polo , T. Schweizer , M. Will

MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes (IACT) that observe Very High Energy (VHE) gamma ray sources. The PMTs in their cameras are designed to operate under moonlight, but they are limited to Moon phases below 93%…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 D. Guberman , J. Cortina , R. García , J. Herrera , M. Manganaro , A. Moralejo , J. Rico , M. Will

Skymaps measured with imaging atmospheric Cherenkov telescopes (IACTs) represent the real source distribution convolved with the point spread function of the observing instrument. Current IACTs have an angular resolution in the order of…

Instrumentation and Methods for Astrophysics · Physics 2015-08-26 Susanne Raab , Ira Jung-Richardt

MAGIC is a system of two Cherenkov telescopes designed to perform observations of gamma rays with energies from about 50 GeV to tens of TeV. A low energy threshold and an excellent low energy performance make it a powerful instrument for…

High Energy Astrophysical Phenomena · Physics 2017-08-22 Julian Sitarek , the MAGIC Collaboration