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The future of ground based gamma ray astronomy lies in large arrays of Imaging Atmospheric Cherenkov Telescopes (IACT) with better capabilities: lower energy threshold, higher sensitivity, better resolution and background rejection.…

Astrophysics · Physics 2008-01-31 S. Sajjad , A. Falvard , G. Vasileiadis

The Cherenkov Telescope Array (CTA) is the next ground-based $\gamma$-ray observatory in the TeV $\gamma$-ray spectral region operating with the Imaging Atmospheric Cherenkov Technique. It is based on almost 70 telescopes of different class…

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

The Cherenkov Telescope Array (CTA) will be the next generation of ground-based instrument for Very High Energy gamma-ray astronomy. It will improve the sensitivity of current telescopes by up to an order of magnitude and provide energy…

Instrumentation and Methods for Astrophysics · Physics 2017-09-04 P. Cumani , T. Hassan , L. Arrabito , K. Bernlöhr , J. Bregeon , G. Maier , A. Moralejo

During the last decade, imaging atmospheric Cherenkov telescopes (IACTs) have proven themselves as astronomical detectors in the very-high-energy (VHE; E>0.1 TeV) regime. The IACT technique observes the VHE photons indirectly, using the…

Instrumentation and Methods for Astrophysics · Physics 2013-09-13 R. de los Reyes , J. Hahn , K. Bernloehr , P. Krueger , C. Deil , H. Gast , K. Kosack , V. Marandon

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

We describe measurements of the X-ray reflectance in the range 2 to 10 keV of samples representative of coated silicon wafers that are proposed for the fabrication of the XEUS (X-ray Evolving Universe Spectrometer) mission. We compare the…

Astrophysics · Physics 2009-11-13 D. H. Lumb , F. E. Christensen , C. P. Jensen , M. Krumrey

Our Galaxy is filled with cosmic-ray particles and more than 98% of them are atomic nuclei. In order to clarify their origin and acceleration mechanism, chemical composition measurements of these cosmic rays with wide energy coverage play…

High Energy Astrophysical Phenomena · Physics 2018-01-22 Michiko Ohishi , Takanori Yoshikoshi , Tatsuo Yoshida

The Cherenkov Telescope Array will provide unprecedented sensitivity and angular resolution to gamma rays across orders of magnitude in energy. Above 1 TeV up to around 300 TeV an array of Small-Sized Telescopes (SSTs) will cover several…

Instrumentation and Methods for Astrophysics · Physics 2018-01-17 Richard White

The Cherenkov Telescope Array (CTA) is the next generation of ground-based very high energy gamma-ray instruments; the facility will be organized in two arrays, one for each hemisphere. The atmospheric calibration of the CTA telescopes is a…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Laura Valore , Carla Aramo , Michele Doro , Marco Iarlori , Vincenzo Rizi , Aurelio Siro Tonachini , Piero Vallania

High-power lasers have numerous scientific and industrial applications. Some key areas include laser cutting and welding in manufacturing, directed energy in fusion reactors or defense applications, laser surgery in medicine, and advanced…

Context. The response of imaging atmospheric Cherenkov telescopes to incident {\gamma}-ray-initiated showers in the atmosphere changes as the telescopes age due to exposure to light and weather. These aging processes affect the…

Interferometric gravitational wave detectors use mirrors whose substrates are formed from materials of low intrinsic mechanical dissipation. The two most likely choices for the test masses in future advanced detectors are fused silica or…

General Relativity and Quantum Cosmology · Physics 2009-11-07 D. R. M. Crooks , P. Sneddon , G. Cagnoli , J. Hough , S. Rowan , M. M. Fejer , E. Gustafson , R. Route , N. Nakagawa , D. Coyne , G. M. Harry , A. M. Gretarsson

The Cherenkov Telescope Array (CTA) is the next generation of Imaging Atmospheric Cherenkov Telescopes. It will reach a sensitivity and an energy resolution with no precendent in very high energy gamma-ray astronomy. In order to achieve…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 A. López-Oramas , O. Abril , O. Blanch Bigas , J. Boix , V. Da Deppo , M. Doro , L. Font , D. Garrido , M. Gaug , M. Martínez , G. Vasileiadis

The Cherenkov Telescope Array (CTA) is an atmospheric Cherenkov observatory that will image the cosmos in very-high-energy gamma rays. CTA will study the highest-energy particle accelerators in the Universe and potentially confirm the…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 J. Vandenbroucke

In recent years, ground-based very-high-energy (VHE; E>100 GeV) gamma-ray astronomy has experienced a major breakthrough with the impressive astrophysical results obtained mainly by the current generation experiments like H.E.S.S., MAGIC,…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 R. M. Wagner , E. J. Lindfors , A. Sillanpää , S. Wagner

Invisibility or cloaking has captured human's imagination for many years. With the recent advancement of metamaterials, several theoretical proposals show cloaking of objects is possible, however, so far there is a lack of an experimental…

Optics · Physics 2015-03-05 Jason Valentine , Jensen Li , Thomas Zentgraf , Guy Bartal , Xiang Zhang

The stereoscopic imaging atmospheric Cherenkov technique, developed in the 1980s and 1990s, is now used by a number of existing and planned gamma-ray observatories around the world. It provides the most sensitive view of the very high…

Instrumentation and Methods for Astrophysics · Physics 2015-10-21 Jamie Holder

The Cherenkov Telescope Array (CTA) will be the future observatory for TeV gamma-ray astronomy. In order to increase the sensitivity and to extend the energy coverage beyond the capabilities of current facilities, its design concept…

Instrumentation and Methods for Astrophysics · Physics 2017-08-09 S. Diebold , J. Dick , G. Pühlhofer , S. Renner , A. Santangelo , T. Schanz , C. Tenzer , the CTA Consortium

Recently, ground-based very high-energy (VHE) gamma-ray astronomy achieved a remarkable advancement in the development of the observational technique for the registration and study of gamma-ray emission above 100 GeV. Construction of…

Astrophysics · Physics 2007-08-30 A. Konopelko , J. P. Finley , G. Urbanski
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