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Exploring the Potential of the Pulsed Laser onboard the CALIPSO Satellite to Improve Calibration with VERITAS

Imaging Atmospheric Cherenkov Telescopes (IACTs) are used to detect bright nanosecond-duration flashes of optical light originating from interactions of cosmic/gamma-rays in the atmosphere. A natural calibration source with similar…

Instrumentation and Methods for Astrophysics · Physics 2023-08-22 Gregory Foote

Construction and On-site Performance of the LHAASO WFCTA Camera

The focal plane camera is the core component of the Wide Field-of-view Cherenkov/fluorescence Telescope Array (WFCTA) of the Large High-Altitude Air Shower Observatory (LHAASO). Because of the capability of working under moonlight without…

Instrumentation and Detectors · Physics 2021-08-09 F. Aharonian , Q. An , Axikegu , L. X. Bai , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , H. Cai , J. T. Cai , Z. Cao , Z. Cao , J. Chang , J. F. Chang , X. C. Chang , B. M. Chen , J. Chen , L. Chen , L. Chen , L. Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , X. L. Chen , Y. Chen , N. Cheng , Y. D. Cheng , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , D. della Volpe , B. D'Ettorre Piazzoli , X. J. Dong , J. H. Fan , Y. Z. Fan , Z. X. Fan , J. Fang , K. Fang , C. F. Feng , L. Feng , S. H. Feng , Y. L. Feng , B. Gao , C. D. Gao , Q. Gao , W. Gao , M. M. Ge , L. S. Geng , G. H. Gong , Q. B. Gou , M. H. Gu , J. G. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , Y. A. Han , H. H. He , H. N. He , J. C. He , S. L. He , X. B. He , Y. He , M. Heller , Y. K. Hor , C. Hou , X. Hou , H. B. Hu , S. Hu , S. C. Hu , X. J. Hu , D. H. Huang , Q. L. Huang , W. H. Huang , X. T. Huang , Z. C. Huang , F. Ji , X. L. Ji , H. Y. Jia , K. Jiang , Z. J. Jiang , C. Jin , D. Kuleshov , K. Levochkin , B. B. Li , C. Li , C. Li , F. Li , H. B. Li , H. C. Li , H. Y. Li , J. Li , K. Li , W. L. Li , X. Li , X. Li , X. R. Li , Y. Li , Y. Z. Li , Z. Li , Z. Li , E. W. Liang , Y. F. Liang , S. J. Lin , B. Liu , C. Liu , D. Liu , H. Liu , H. D. Liu , J. Liu , J. L. Liu , J. S. Liu , J. Y. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , Y. N. Liu , Z. X. Liu , W. J. Long , R. Lu , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , J. R. Mao , A. Masood , W. Mitthumsiri , T. Montaruli , Y. C. Nan , B. Y. Pang , P. Pattarakijwanich , Z. Y. Pei , M. Y. Qi , D. Ruffolo , V. Rulev , A. Sáiz , L. Shao , O. Shchegolev , X. D. Sheng , J. R. Shi , H. C. Song , Yu. V. Stenkin , V. Stepanov , Q. N. Sun , X. N. Sun , Z. B. Sun , P. H. T. Tam , Z. B. Tang , W. W. Tian , B. D. Wang , C. Wang , H. Wang , H. G. Wang , J. C. Wang , J. S. Wang , L. P. Wang , L. Y. Wang , R. N. Wang , W. Wang , W. Wang , X. G. Wang , X. J. Wang , X. Y. Wang , Y. D. Wang , Y. J. Wang , Y. P. Wang , Z. Wang , Z. Wang , Z. H. Wang , Z. X. Wang , D. M. Wei , J. J. Wei , Y. J. Wei , T. Wen , C. Y. Wu , H. R. Wu , S. Wu , W. X. Wu , X. F. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , G. Xiao , H. B. Xiao , G. G. Xin , Y. L. Xin , Y. Xing , D. L. Xu , R. X. Xu , L. Xue , D. H. Yan , C. W. Yang , F. F. Yang , J. Y. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , S. B. Yang , Y. H. Yao , Z. G. Yao , Y. M. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Y. H. Yu , Q. Yuan , H. D. Zeng , T. X. Zeng , W. Zeng , Z. K. Zeng , M. Zha , X. X. Zhai , B. B. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , J. W. Zhang , L. Zhang , L. Zhang , L. X. Zhang , P. F. Zhang , P. P. Zhang , R. Zhang , S. R. Zhang , S. S. Zhang , X. Zhang , X. P. Zhang , Y. Zhang , Y. Zhang , Y. F. Zhang , Y. L. Zhang , B. Zhao , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , F. Zheng , Y. Zheng , B. Zhou , H. Zhou , J. N. Zhou , P. Zhou , R. Zhou , X. X. Zhou , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , X. Zuo

The CAT Imaging Telescope for Very-High-Energy Gamma-Ray Astronomy

The CAT (Cherenkov Array at Themis) imaging telescope, equipped with a very-high-definition camera (546 fast phototubes with 0.12 degrees spacing surrounded by 54 larger tubes in two guard rings) started operation in Autumn 1996 on the site…

Astrophysics · Physics 2009-10-30 A. Barrau , R. Bazer-Bachi , E. Beyer , H. Cabot , M. Cerutti , L. M. Chounet , G. Debiais , B. Degrange , H. Delchini , J. P. Denance , G. Descotes , J. P. Dezalay , A. Djannati-Atai , D. Dumora , P. Espigat , B. Fabre , P. Fleury , G. Fontaine , R. George , C. Ghesquiere , J. Gilly , P. Goret , C. Gouiffes , J. C. Gouillaud , C. Gregory , I. A. Grenier , L. Iacoucci , L. Kalt , S. Le Bohec , I. Malet , C. Meynadier , J. P. Mols , P. Mora de Freitas , R. Morano , G. Morinaud , F. Munz , M. Palatka , T. A. Palfrey , E. Pare , Y. Pons , M. Punch , J. Quebert , K. Ragan , C. Renault , M. Rivoal , L. Rob , P. Schovanek , D. Smith , A. Tabary , J. P. Tavernet , F. Toussenel , J. Vrana

The Detectability of Neutralino Clumps via Atmospheric Cherenkov Telescopes

High resolution N-body simulations have revealed the survival of considerable substructure within galactic halos. Assuming that the predicted dark matter clumps are composed of annihilating neutralinos, we examine their detectability via…

Astrophysics · Physics 2011-05-12 A. Tasitsiomi , A. V. Olinto

Selection of gamma events from IACT images with deep learning methods

Imaging Atmospheric Cherenkov Telescopes (IACTs) of gamma ray observatory TAIGA detect the Extesnive Air Showers (EASs) originating from the cosmic or gamma rays interactions with the atmosphere. Thereby, telescopes obtain images of the…

Instrumentation and Methods for Astrophysics · Physics 2024-01-31 E. O. Gres , A. P. Kryukov , A. P. Demichev , J. J. Dubenskaya , S. P. Polyakov , A. A. Vlaskina , D. P. Zhurov

A template method for measuring the iron spectrum in cosmic rays with Cherenkov telescopes

Understanding the sources, acceleration mechanisms, and propagation of cosmic rays is an active area of research in astro-particle physics. Measuring the spectrum and elemental composition of cosmic rays on earth can help solve this…

Instrumentation and Methods for Astrophysics · Physics 2015-08-20 Henrike Fleischhack

Optimized analysis method for indirect dark matter searches with Imaging Air Cherenkov Telescopes

We propose a dedicated analysis approach for indirect Dark Matter searches with Imaging Air Cherenkov Telescopes. By using the full likelihood analysis, we take complete advantage of the distinct features expected in the gamma ray spectrum…

High Energy Astrophysical Phenomena · Physics 2012-10-19 Jelena Aleksic , Javier Rico , Manel Martinez

Gamma-Hadron Separation in Very-High-Energy gamma-ray astronomy using a multivariate analysis method

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…

Instrumentation and Methods for Astrophysics · Physics 2009-05-27 Stefan Ohm , Christopher van Eldik , Kathrin Egberts

Application of Deep Learning methods to analysis of Imaging Atmospheric Cherenkov Telescopes data

Ground based gamma-ray observations with Imaging Atmospheric Cherenkov Telescopes (IACTs) play a significant role in the discovery of very high energy (E > 100 GeV) gamma-ray emitters. The analysis of IACT data demands a highly efficient…

Instrumentation and Methods for Astrophysics · Physics 2018-11-07 Idan Shilon , Manuel Kraus , Matthias Büchele , Kathrin Egberts , Tobias Fischer , Tim Lukas Holch , Thomas Lohse , Ullrich Schwanke , Constantin Steppa , Stefan Funk

Monte Carlo simulations of alternative sky observation modes with the Cherenkov Telescope Array

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

A 15 deg Wide Field of View Imaging Air Cherenkov Telescope

Contemporary imaging air Cherenkov telescopes (IACT) for ground-based very high energy (VHE) gamma ray astronomy have prime focus optical design. Typically these telescopes have a 2-4 deg wide field of view (FoV). They use f/0.7-f/1.2…

Astrophysics · Physics 2011-06-08 R. Mirzoyan , M. I. Andersen

Intensity and Phase correction Enhanced interferometric scattering microscopy (iSCAT)

Interferometric scattering microscopy was widely applied in nanoscopic detection and tracking due to its high sensitivity and label-free manner. The sensitivity is limited by contrast. Oblique illumination provided high contrast with lower…

Optics · Physics 2025-11-11 Xiang Zhang , Wenfu Lin , Yatao Yang , Yifan Wang

Light exposure and temperature effects on quantum efficiency of bialkali metal photomultipier tubes

In astroparticle experiments, photomultiplier tubes are crucial for detecting Cherenkov radiation emitted by charged particles, owing to their exceptional sensitivity to low-intensity light, which is essential for studying high-energy…

Instrumentation and Detectors · Physics 2025-04-23 Antonio De Benedittis , Pasquale Migliozzi , Carlos Maximiliano Mollo , Andreino Simonelli , Daniele Vivolo

Monte Carlo Simulations and Validation of NectarCAM, a Medium Sized Telescope Camera for CTA

The upcoming Cherenkov Telescope Array (CTA) ground-based gamma-ray observatory will open up our view of the very high energy Universe, offering an improvement in sensitivity of 5-10 times that of previous experiments. NectarCAM is one of…

Instrumentation and Methods for Astrophysics · Physics 2021-08-03 Thomas Armstrong , Heide Costantini , Jean-François Glicenstein , Jean-Philippe Lenain , Ullrich Schwanke , Thomas Tavernier

Probing extreme environments with the Cherenkov Telescope Array

The physics of the non-thermal Universe provides information on the acceleration mechanisms in extreme environments, such as black holes and relativistic jets, neutron stars, supernovae or clusters of galaxies. In the presence of magnetic…

Instrumentation and Methods for Astrophysics · Physics 2021-06-11 C. Boisson , A. M. Brown , A. Burtovoi , M. Cerruti , M. Chernyakova , T. Hassan , J. -P. Lenain , M. Manganaro , P. Romano , H. Sol , F. Tavecchio , S. Vercellone , L. Zampieri , R. Zanin , A. Zech , I. Agudo , R. Alves Batista , E. O. Anguner , L. A. Antonelli , M. Backes , C. Balazs , J. Becerra González , C. Bigongiari , E. Bissaldi , J. Bolmont , P. Bordas , Ž. Bošnjak , M. Böttcher , M. Burton , F. Cangemi , P. Caraveo , M. Cardillo , S. Caroff , A. Carosi , S. Casanova , S. Chaty , J. L. Contreras , J. G. Coelho , G. Cotter , A. D'Aì , F. D'Ammando , E. M. de Gouveia Dal Pino , D. de Martino , C. Delgado , D. della Volpe , A. Djannati-Ataï , R. C. Dos Anjos , E. de Oña Wilhelmi , V. Dwarkadas , G. Emery , E. Fedorova , S. Fegan , M. D. Filipovic , G. Galanti , D. Gasparrini , G. Ghirlanda , P. Goldoni , J. Granot , J. G. Green , M. Heller , B. Hnatyk , R. Hnatyk , D. Horan , T. Hovatta , S. Inoue , M. Jamrozy , B. Khélifi , N. Komin , K. Kohri , A. Lamastra , N. La Palombara , E. Lindfors , I. Liodakis , S. Lombardi , F. Longo , F. Lucarelli , P. L. Luque-Escamilla , J. Marti , M. Martinez , D. Mazin , J. D. Mbarubucyeye , S. Menchiari , L. Mohrmann , T. Montaruli , A. Moralejo Olaizola , D. Morcuende , G. Morlino , A. Morselli , C. G. Mundell , T. Murach , A. Nagai , A. Nayerhoda , J. Niemiec , M. Nikolajuk , B. Olmi , M. Orienti , J. M. Paredes , G. Pareschi , A. Pe'er , G. Pühlhofer , M. Punch , O. Reimer , M. Ribó , F. Rieger , G. Rodriguez , J. Rodriguez , G. Romeo , M. Roncadelli , G. Rowell , B. Rudak , I. Sadeh , F. Salesa Greus , U. Sawangwit , F. Schüssler , O. Sergijenko , R. C. Shellard , F. G. Saturni , A. Stamerra , Th. Stolarczyk , G. Tagliaferri , V. Testa , L. Tibaldo , S. Ventura , A. Viana , J. Vink , V. Vitale , S. Vorobiov , A. Wierzcholska , M. Zacharias , D. Zavrtanik

A new time-dependent likelihood technique for detection of gamma-ray bursts with IACT arrays

In imaging atmospheric Cherenkov telescope (IACT) arrays, the standard method of statistically inferring the existence of a source is based on the maximum likelihood method of Li&Ma (1983). We present a new statistical approach, also based…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Ori M. Weiner

A new method of reconstructing images of gamma-ray telescopes applied to the LST-1 of CTAO

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

Deep Learning Transient Detection with VERITAS

Ground-based $\gamma$-ray observatories, such as the VERITAS array of imaging atmospheric Cherenkov telescopes, provide insight into very-high-energy (VHE, $\mathrm{E}>100\,\mathrm{GeV}$) astrophysical transient events. Examples include the…

High Energy Astrophysical Phenomena · Physics 2022-09-21 Konstantin Pfrang

Ground based gamma-ray astronomy with Cherenkov Telescopes

Very-high-energy (>100 GeV) gamma-ray astronomy is emerging as an important discipline in both high energy astrophysics and astro-particle physics. This field is currently dominated by Imaging Atmospheric-Cherenkov Telescopes (IACTs) and…

Astrophysics · Physics 2010-01-15 Jim Hinton

Quantifying photometric observing conditions on Paranal using an IR camera

A Low Humidity and Temperature Profiling (LHATPRO) microwave radiometer, manufactured by Radiometer Physics GmbH (RPG), is used to monitor sky conditions over ESO's Paranal observatory in support of VLT science operations. In addition to…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 Florian Kerber , Richard R. Querel , Reinhard Hanuschik