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In recent years, Imaging Atmospheric Cherenkov Telescopes (IACTs) have discovered a rich diversity of very high energy (VHE, > 100 GeV) gamma-ray emitters in the sky. These instruments image Cherenkov light emitted by gamma-ray induced…

天体物理仪器与方法 · 物理学 2009-05-27 Stefan Ohm , Christopher van Eldik , Kathrin Egberts

Imaging atmospheric Cherenkov telescopes (IACTs) are the main technique for detecting gamma rays with energies between tens of GeV and hundreds of TeV. Amongst them, the High Energy Stereoscopic System (H.E.S.S.) has pioneered the use of…

高能天体物理现象 · 物理学 2026-04-01 Rodrigo Guedes Lang , Tim Unbehaun , Lars Mohrmann , Simon Steinmassl , Jim Hinton , Stefan Funk

In this paper, we present the results of Monte Carlo simulations of atmospheric showers induced by diffuse gamma rays as detected by the high-energy gamma ray astronomy (HEGRA) system of five imaging atmospheric Cerenkov telescopes (IACTs).…

天体物理学 · 物理学 2008-11-26 A. Konopelko , F. Lucarelli , H. Lampeitl , W. Hofmann

Imaging Atmospheric Cherenkov Telescope (IACT) searches for dark matter often perform observations in "wobble mode", i.e. collecting data from the signal region and from a corresponding background control region at the same time, enabling…

高能天体物理现象 · 物理学 2019-05-22 Stefania Gori , Stefano Profumo , Bibhushan Shakya

The effective observation time of Imaging Air Cherenkov Telescopes (IACTs) plays an important role in the detection of gamma-ray sources, especially when the expected flux is low. This time is strongly limited by the atmospheric conditions.…

天体物理仪器与方法 · 物理学 2020-09-29 Dorota Sobczyńska , Katarzyna Adamczyk , Julian Sitarek , Michal Szanecki

The CTAO (Cherenkov Telescope Array Observatory) is an international observatory currently under construction. With more than sixty telescopes, it will eventually be the largest and most sensitive ground-based gamma-ray observatory. CTAO…

天体物理仪器与方法 · 物理学 2025-02-12 Hana Ali Messaoud , Thomas Vuillaume , Tom François

Atmospheric monitoring is an integral part of the design of the Cherenkov Telescope Array (CTA), as atmospheric conditions affect the observations by Imaging Atmospheric Cherenkov Telescopes (IACT) in multiple ways. The variable optical…

Imaging Atmospheric Cherenkov Telescopes (IACTs) are ground-based indirect detectors for cosmic gamma rays with energies above tens of GeV. The major backgrounds for gamma-ray observations in IACTs are cosmic-ray charged particles. The…

VERITAS (Very Energetic Radiation Imaging Telescope Array System) is the current-generation array comprising four 12-meter optical ground-based Imaging Atmospheric Cherenkov Telescopes (IACTs). Its primary goal is to indirectly observe…

天体物理仪器与方法 · 物理学 2023-08-23 J. Hoang , D. A. Williams

The Cherenkov Telescope Array (CTA) is the next-generation stereoscopic system of Imaging Atmospheric Cherenkov Telescopes (IACTs). In IACTs, the atmosphere is used as a calorimeter to measure the energy of extensive air showers induced by…

天体物理仪器与方法 · 物理学 2023-06-14 Mario Pecimotika , Dijana Dominis Prester , Dario Hrupec , Saša Mićanović , Lovro Pavletić , Julian Sitarek

Gamma ray observations from a few hundred MeV up to tens of TeV are a valuable tool for studying particle acceleration and diffusion within our galaxy. Constructing a coherent physical picture of particle accelerators such as supernova…

天体物理仪器与方法 · 物理学 2019-08-16 Alisha Chromey

The High-Altitude Water Cherenkov experiment (HAWC) observatory is located 4100 meters above sea level. HAWC is able to detect secondary particles from extensive air showers (EAS) initiated in the interaction of a primary particle (either a…

天体物理仪器与方法 · 物理学 2019-08-13 E. Bourbeau , T. Capistrán , I. Torres , E. Moreno

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…

天体物理学 · 物理学 2007-05-23 M. Ulrich , A. Daum , G. Hermann , W. Hofmann

The Tunka Advanced Instrument for Gamma- and cosmic-ray Astronomy (TAIGA) is a multicomponent experiment for the measurement of TeV to PeV gamma- and cosmic rays. Our goal is to establish a novel hybrid direct air shower technique,…

天体物理仪器与方法 · 物理学 2023-01-27 M. Blank , M. Tluczykont , A. Porelli , R. Mirzoyan , R. Wischnewski , A. K. Awad , M. Brueckner

The direction of extensive air showers can be used to determine the source of gamma quanta and plays an important role in estimating the energy of the primary particle. The data from an array of non-imaging Cherenkov detector stations…

天体物理仪器与方法 · 物理学 2025-03-27 A. P. Kryukov , S. P. Polyakov , Yu. Yu. Dubenskaya , E. O. Gres , E. B. Postnikov , P. A. Volchugov , D. P. Zhurov

H.E.S.S. is a system of Imaging Atmospheric Cherenkov Telescopes (IACTs) measuring cosmic gamma-rays with very high energies in Namibia. Extending the array with a fifth telescope with a mirror area of 600 m$^2$ leads to a lower energy…

高能天体物理现象 · 物理学 2019-08-14 M. Holler , A. Balzer , Y. Becherini , S. Klepser , T. Murach , M. de Naurois , R. Parsons

The operation of a small-size Cherenkov gamma-ray telescope TAIGA-IACT with camera on SiPMs OnSemi MicroFJ-60035 has been modelled by multiparticle Monte Carlo (MC) methods. The model implies that telescope camera is equipped with two…

The Cherenkov Telescope Array (CTA) is the future observatory for ground-based imaging atmospheric Cherenkov telescopes. Each telescope will provide a snapshot of gamma-ray induced particle showers by capturing the induced Cherenkov…

天体物理仪器与方法 · 物理学 2023-02-24 J. Aschersleben , M. Vecchi , M. H. F. Wilkinson , R. F. Peletier

The Cherenkov Telescope Array Observatory (CTAO) is the next generation of ground-based observatories employing the imaging air Cherenkov technique for the study of very high energy gamma rays. The software Gammalearn proposes to apply Deep…

天体物理仪器与方法 · 物理学 2025-02-12 Tom François , Justine Talpaert , Thomas Vuillaume

The Imaging Atmospheric Cherenkov Technique (IACT) is unusual in astronomy as the atmosphere actually forms an intrinsic part of the detector system, with telescopes indirectly detecting very high energy particles by the generation and…

天体物理仪器与方法 · 物理学 2019-08-14 M. K. Daniel