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The monitoring of the atmosphere is very relevant for Imaging Atmospheric Cherenkov Telescopes. Adverse weather conditions (strong wind, high humidity, etc.) may damage the telescopes and must therefore be monitored continuously to…

Instrumentation and Methods for Astrophysics · Physics 2014-03-21 M. Gaug , O. Blanch , D. Dorner , M. Doro , Ll. Font , C. Fruck , M. Garczarczyk , D. Garrido , D. Hrupec , J. Hose , A. López-Oramas , G. Maneva , M. Martinez , R. Mirzoyan , P. Temnikov , R. Zanin

The Cherenkov Telescope Array Observatory (CTAO), a next-generation ground-based gamma-ray observatory, will be composed of two arrays of multiple imaging atmospheric Cherenkov telescopes (IACTs) located in both the Northern and Southern…

High Energy Astrophysical Phenomena · Physics 2025-09-19 T. Miener , I. Viale , B. Lacave , A. Cerviño

Background showers triggered by hadrons represent over 99.9% of all particles arriving at ground-based gamma-ray observatories. An important stage in the data analysis of these observatories, therefore, is the removal of hadron-triggered…

High Energy Astrophysical Phenomena · Physics 2022-09-21 T. Capistrán , K. L. Fan , J. T. Linnemann , I. Torres , P. M. Saz Parkinson , P. L. H. Yu

We investigate possible sky survey modes with the Middle Sized Telescopes (MST, aimed at covering the energy range from $\sim$100 GeV to 10 TeV) subsystem of the Cherenkov Telescope Array (CTA). We use the standard CTA tools, CORSIKA and…

Instrumentation and Methods for Astrophysics · Physics 2015-02-20 M. Szanecki , D. Sobczyńska , A. Niedźwiecki , J. Sitarek , W. Bednarek

Telescopes, designed with semi-conductor based photo sensors, have the potential to detect Cherenkov or fluorescence light emitted by cosmic-rays in the atmosphere. Such telescopes promise a high duty cycle and efficiency in remote harsh…

Instrumentation and Methods for Astrophysics · Physics 2015-11-06 Jan Auffenberg , Thomas Bretz , Lukas Middendorf , Tim Niggemann , Leif Rädel , Merlin Schaufel , Sebastian Schoenen , Johannes Schumacher , Christopher Wiebusch

Recent developments in machine learning (ML) techniques present a promising new analysis method for high-speed imaging in astroparticle physics experiments, for example with imaging atmospheric Cherenkov telescopes (IACTs). In particular,…

Instrumentation and Methods for Astrophysics · Physics 2019-07-23 Samuel Spencer , Thomas Armstrong , Jason Watson , Garret Cotter

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…

A new background rejection strategy for gamma-ray astrophysics with stereoscopic Imaging Atmospheric Cherenkov Telescopes (IACT), based on Monte Carlo (MC) simulations and real background data from the H.E.S.S. [High Energy Stereoscopic…

High Energy Astrophysical Phenomena · Physics 2011-04-29 Yvonne Becherini , Arache Djannati-Ataï , Vincent Marandon , Michael Punch , Santiago Pita

Cherenkov telescopes could have the capability of detecting high energy tau neutrinos by searching for very inclined showers. If a tau lepton, produced by a tau neutrino, escapes from the Earth crust, it will decay and initiate an air…

Instrumentation and Methods for Astrophysics · Physics 2013-08-02 Dariusz Gora , Elisa Bernardini

A detailed Monte-Carlo code has been developed from basic principles that simulates almost all of the basic photon and charged particle interactions. The code is used to derive the response functions of a high energy photon detector to…

Instrumentation and Detectors · Physics 2008-10-03 Srikanta Sinha

The High-Altitude Water Cherenkov (HAWC) Observatory comprises 300 water Cherenkov detectors, each equipped with four photomultipliers, located on the Volc\'{a}n Sierra Negra in Mexico at 4,100 masl. This observatory can detect gamma rays…

High Energy Astrophysical Phenomena · Physics 2025-09-04 J. Jaimes , T. Capistrán , I. Torres

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

The Cherenkov Telescope Array (CTA) is about to enter construction phase and one of its main key science projects is to perform an unbiased survey in search of extragalactic sources. We make use of both the latest blazar gamma--ray…

Instrumentation and Methods for Astrophysics · Physics 2017-07-04 Andrea De Franco , Yoshiyuki Inoue , Miguel A. Sánchez-Conde , Garret Cotter

The efficiency of the $\gamma$/hadron separation worsens significantly at low energies for Imaging Air Cherenkov Telescopes (IACT). This observed effect was partially explained by the occurrence of a hardly reducible hadronic background…

Instrumentation and Methods for Astrophysics · Physics 2016-12-30 Dorota Sobczynska , Katarzyna Adamczyk

The Cherenkov Telescope Array (CTA) project aims to build the largest ground-based gamma-ray observatory based on an array of Imaging Atmospheric Cherenkov Telescopes (IACTs). The CTA will implement a multi-level trigger system to…

The Cherenkov Telescope Array (CTA) will be the next generation observatory employing different types of Cherenkov telescopes for the detection of particle showers initiated by very-high-energy gamma rays. A good knowledge of the Earth's…

Instrumentation and Methods for Astrophysics · Physics 2018-01-22 Stanislav Stefanik , Raquel de los Reyes , Dalibor Nosek

The Cherenkov Telescope Array Observatory (CTAO) is the next generation of observatories employing the imaging air Cherenkov technique for the study of very high energy gamma rays. The deployment of deep learning methods for the…

Instrumentation and Methods for Astrophysics · Physics 2024-03-21 Michael Dellaiera , Cyann Plard , Thomas Vuillaume , Alexandre Benoit , Sami Caroff

Imaging atmospheric Cherenkov telescopes (IACTs) are used to observe very high-energy photons from the ground. Gamma rays are indirectly detected through the Cherenkov light emitted by the air showers they induce. The new generation of…

High Energy Astrophysical Phenomena · Physics 2024-11-27 CTA-LST Project , : , K. Abe , S. Abe , A. Abhishek , F. Acero , A. Aguasca-Cabot , I. Agudo , C. Alispach , N. Alvarez Crespo , D. Ambrosino , L. A. Antonelli , C. Aramo , A. Arbet-Engels , C. Arcaro , K. Asano , P. Aubert , A. Baktash , M. Balbo , A. Bamba , A. Baquero Larriva , U. Barres de Almeida , J. A. Barrio , L. Barrios Jiménez , I. Batkovic , J. Baxter , J. Becerra González , E. Bernardini , J. Bernete Medrano , A. Berti , I. Bezshyiko , P. Bhattacharjee , C. Bigongiari , E. Bissaldi , O. Blanch , G. Bonnoli , P. Bordas , G. Borkowski , G. Brunelli , A. Bulgarelli , I. Burelli , L. Burmistrov , M. Buscemi , M. Cardillo , S. Caroff , A. Carosi , M. S. Carrasco , F. Cassol , N. Castrejón , D. Cauz , D. Cerasole , G. Ceribella , Y. Chai , K. Cheng , A. Chiavassa , M. Chikawa , G. Chon , L. Chytka , G. M. Cicciari , A. Cifuentes , J. L. Contreras , J. Cortina , H. Costantini , P. Da Vela , M. Dalchenko , F. Dazzi , A. De Angelis , M. de Bony de Lavergne , B. De Lotto , R. de Menezes , R. Del Burgo , L. Del Peral , C. Delgado , J. Delgado Mengual , D. della Volpe , M. Dellaiera , A. Di Piano , F. Di Pierro , R. Di Tria , L. Di Venere , C. Díaz , R. M. Dominik , D. Dominis Prester , A. Donini , D. Dorner , M. Doro , L. Eisenberger , D. Elsässer , G. Emery , J. Escudero , V. Fallah Ramazani , F. Ferrarotto , A. Fiasson , L. Foffano , L. Freixas Coromina , S. Fröse , Y. Fukazawa , R. Garcia López , C. Gasbarra , D. Gasparrini , D. Geyer , J. Giesbrecht Paiva , N. Giglietto , F. Giordano , P. Gliwny , N. Godinovic , R. Grau , D. Green , J. Green , S. Gunji , P. Günther , J. Hackfeld , D. Hadasch , A. Hahn , T. Hassan , K. Hayashi , L. Heckmann , M. Heller , J. Herrera Llorente , K. Hirotani , D. Hoffmann , D. Horns , J. Houles , M. Hrabovsky , D. Hrupec , D. Hui , M. Iarlori , R. Imazawa , T. Inada , Y. Inome , S. Inoue , K. Ioka , M. Iori , A. Iuliano , I. Jimenez Martinez , J. Jimenez Quiles , J. Jurysek , M. Kagaya , O. Kalashev , V. Karas , H. Katagiri , J. Kataoka , D. Kerszberg , Y. Kobayashi , K. Kohri , A. Kong , H. Kubo , J. Kushida , M. Lainez , G. Lamanna , A. Lamastra , L. Lemoigne , M. Linhoff , F. Longo , R. López-Coto , A. López-Oramas , S. Loporchio , A. Lorini , J. Lozano Bahilo , H. Luciani , P. L. Luque-Escamilla , P. Majumdar , M. Makariev , M. Mallamaci , D. Mandat , M. Manganaro , G. Manicò , K. Mannheim , S. Marchesi , M. Mariotti , P. Marquez , G. Marsella , J. Martí , O. Martinez , G. Martínez , M. Martínez , A. Mas-Aguilar , G. Maurin , D. Mazin , J. Méndez-Gallego , E. Mestre Guillen , S. Micanovic , D. Miceli , T. Miener , J. M. Miranda , R. Mirzoyan , T. Mizuno , M. Molero Gonzalez , E. Molina , T. Montaruli , A. Moralejo , D. Morcuende , A. Morselli , V. Moya , H. Muraishi , S. Nagataki , T. Nakamori , A. Neronov , L. Nickel , M. Nievas Rosillo , L. Nikolic , K. Nishijima , K. Noda , D. Nosek , V. Novotny , S. Nozaki , M. Ohishi , Y. Ohtani , T. Oka , A. Okumura , R. Orito , J. Otero-Santos , P. Ottanelli , E. Owen , M. Palatiello , D. Paneque , F. R. Pantaleo , R. Paoletti , J. M. Paredes , M. Pech , M. Pecimotika , M. Peresano , F. Pfeifle , E. Pietropaolo , M. Pihet , G. Pirola , C. Plard , F. Podobnik , E. Pons , E. Prandini , C. Priyadarshi , M. Prouza , S. Rainò , R. Rando , W. Rhode , M. Ribó , C. Righi , V. Rizi , G. Rodriguez Fernandez , M. D. Rodríguez Frías , A. Ruina , E. Ruiz-Velasco , T. Saito , S. Sakurai , D. A. Sanchez , H. Sano , T. Šarić , Y. Sato , F. G. Saturni , V. Savchenko , F. Schiavone , B. Schleicher , F. Schmuckermaier , J. L. Schubert , F. Schussler , T. Schweizer , M. Seglar Arroyo , T. Siegert , J. Sitarek , V. Sliusar , J. Strišković , M. Strzys , Y. Suda , H. Tajima , H. Takahashi , M. Takahashi , J. Takata , R. Takeishi , P. H. T. Tam , S. J. Tanaka , D. Tateishi , T. Tavernier , P. Temnikov , Y. Terada , K. Terauchi , T. Terzic , M. Teshima , M. Tluczykont , F. Tokanai , D. F. Torres , P. Travnicek , A. Tutone , M. Vacula , P. Vallania , J. van Scherpenberg , M. Vázquez Acosta , S. Ventura , G. Verna , I. Viale , A. Vigliano , C. F. Vigorito , E. Visentin , V. Vitale , V. Voitsekhovskyi , G. Voutsinas , I. Vovk , T. Vuillaume , R. Walter , L. Wan , M. Will , J. Wójtowicz , T. Yamamoto , R. Yamazaki , P. K. H. Yeung , T. Yoshida , T. Yoshikoshi , W. Zhang , N. Zywucka

We present a method which extends Monte Carlo studies to situations that require a large dynamic range in particle number. The underlying idea is that, in order to calculate the collisional evolution of a system, some particle interactions…

Astrophysics · Physics 2009-11-13 C. W. Ormel , M. Spaans

The Cherenkov Telescopic Array (CTA), the next-generation ground-based gamma-ray observatory, will have unprecedented sensitivity, providing answers to open questions in gamma-ray cosmology and fundamental physics. Using simulations of…

Instrumentation and Methods for Astrophysics · Physics 2021-10-18 Ievgen Vovk , Jonathan Biteau , Humberto Martinez-Huerta , Manuel Meyer , Santiago Pita