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Ground-based gamma-ray astronomy has experienced a major breakthrough in the last decade thanks to the advent of new generation instruments such as H.E.S.S., MAGIC, Milagro and VERITAS. A large variety of cosmic particle accelerators has…

High Energy Astrophysical Phenomena · Physics 2011-10-11 Jürgen Knödlseder

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 present generation of ground-based Very High Energy (VHE) gamma-ray observatories consist of arrays of up to four large (> 12m diameter) light collectors quite similar to those used by R. Hanbury Brown to measure stellar diameters by…

Astrophysics · Physics 2009-06-23 S. Le Bohec , M. Daniel , W. J. de Wit , J. A. Hinton , E. Jose , J. A. Holder , J. Smith , R. J. White

We outline the science prospects for gamma-ray bursts (GRBs) with the Cherenkov Telescope Array (CTA), the next-generation ground-based gamma-ray observatory operating at energies above few tens of GeV. With its low energy threshold, large…

Gamma-ray Bursts (GRB) were discovered by satellite-based detectors as powerful sources of transient $\gamma$-ray emission. The Fermi satellite detected an increasing number of these events with its dedicated Gamma-ray Burst Monitor (GBM),…

Instrumentation and Methods for Astrophysics · Physics 2021-09-29 G. La Mura , U. Barres de Almeida , R. Conceição , A. De Angelis , F. Longo , M. Pimenta , E. Prandini , E. Ruiz-Velasco , B. Tomé

During the last 20 years, TeV astronomy turned from a fledgling field, with only a handful of sources into a fully-developed astronomy discipline, broadening our knowledge on a variety of types of TeV gamma-ray sources. This progress has…

Instrumentation and Methods for Astrophysics · Physics 2022-01-24 Julian Sitarek

Fermi has shown GRBs to be a source of >10 GeV photons. We present an estimate of the detection rate of GRBs with a next generation Cherenkov telescope. Our predictions are based on the observed properties of GRBs detected by Fermi,…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Rudy C. Gilmore , Joel R. Primack , Aurelien Bouvier , A. Nepomuk Otte

Ground-based gamma-ray astronomy experienced a major boost with the advent of the present generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) in the past decade. Photons of energies >~ 0.1 TeV are a very useful tool in the study…

High Energy Astrophysical Phenomena · Physics 2013-06-07 Abelardo Moralejo Olaizola

The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for gamma-ray astronomy at very-high energies. It will be capable of detecting gamma rays in the energy range from 20 GeV to more than 300 TeV with…

Instrumentation and Methods for Astrophysics · Physics 2019-07-22 Daniel Mazin

The synchrotron self-Compton (SSC) emission from Gamma-ray Burst (GRB) forward shock can extend to the very-high-energy (VHE; $E_\gamma > $100 GeV) range. Such high energy photons are rare and are attenuated by the cosmic infrared…

High Energy Astrophysical Phenomena · Physics 2015-05-13 R. R. Xue , P. H. Tam , S. J. Wagner , B. Behera , Y. Z. Fan , D. M. Wei

The next generation all-sky monitor operating at TeV (0.1 - 30 TeV) energies should be capable of performing a continuous high sensitivity sky survey, and detecting transient sources, such as AGN flares, with high statistical significance…

Astrophysics · Physics 2011-05-23 R. S. Miller , S. Westerhoff

Gamma-ray Astronomy studies cosmic accelerators through their electromagnetic radiation in the energy range between ~100 MeV and ~100 TeV. The present most sensitive observations in this energy band are performed, from space, by the Large…

High Energy Astrophysical Phenomena · Physics 2011-11-29 Javier Rico

During the last decade ground-based very high-energy 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. It is widely…

Astrophysics · Physics 2008-11-26 A. Konopelko , A. Chilingarian , A. Reimers

A project to construct a 17 m diameter imaging air Cherenkov telescope, called the MAGIC Telescope, is described. The aim of the project is to close the observation gap in the gamma-ray sky extending from 10 GeV as the highest energy…

Astrophysics · Physics 2007-05-23 N. Magnussen

The origin of Galactic CRs up the knee energy remains unanswered and provides strong motivation for the study of gamma-ray sources at energies above 10 TeV. We discuss recent results from ground-based gamma-ray Cherenkov imaging systems at…

Astrophysics · Physics 2007-05-23 G. Rowell , F. Aharonian , A. Plyasheshnikov

The field of TeV gamma-ray astronomy is reviewed with emphasis on its relation to the origin of cosmic rays. The discovery of TeV photons from supernova remnants and active galaxies has provided the first direct observational link between…

Astrophysics · Physics 2007-05-23 Frank Krennrich

Space-based astronomy of hard X-rays and gamma rays covers more than seven orders of magnitude in photon energy, from 10 keV to several hundred GeV. Detecting cosmic photons in this energy range is a challenge, due to the relatively low…

Instrumentation and Methods for Astrophysics · Physics 2024-11-20 Vincent Tatischeff , Philippe Laurent

The observational progress in the $\gamma$-ray astronomy in the last few years has led to the discovery of more than a thousand sources at GeV energies and more than a hundred sources at TeV energies. A few different classes of compact…

High Energy Astrophysical Phenomena · Physics 2013-06-21 W. Bednarek

Detecting cosmic gamma rays at high rates is the key to time-resolve the acceleration of particles within some of the most powerful events in the universe. Time-resolving the emission of gamma rays from merging celestial bodies, apparently…

Instrumentation and Methods for Astrophysics · Physics 2024-02-12 Sebastian Achim Mueller , Spyridon Daglas , Axel Arbet Engels , Max Ludwig Ahnen , Dominik Neise , Adrian Egger , Eleni Chatzi , Adrian Biland , Werner Hofmann

The high-lights of ground-based very-high-energy (VHE, $E>100$ GeV) gamma-ray astronomy are reviewed. The summary covers both Galactic and extra-galactic sources. A total of at least 70 sources are currently known. Implications for our…

Astrophysics · Physics 2015-05-13 D. Horns