Related papers: Studies of Direct Cherenkov Emission with VERITAS

Parametrization of the angular distribution of Cherenkov light in air showers

The Cherenkov light produced in air showers largely contributes to the signal observed in ground-based gamma-ray and cosmic-ray observatories. Yet, no description of this phenomenon is available covering both regions of small and large…

High Energy Astrophysical Phenomena · Physics 2021-03-17 Luan Arbeletche , Vitor de Souza

Cherenkov-Plenoscope

Telescopes -- far seeing -- have since centuries revealed insights to objects at cosmic distances. Adopted for gamma-ray-astronomy, ground based Cherenkov-telescopes image the faint Cherenkov-light of air-showers induced by cosmic…

Instrumentation and Methods for Astrophysics · Physics 2019-05-01 Sebastian Achim Mueller

Matched Runs Method to Study Extended Regions of Gamma-ray Emission

Imaging atmospheric Cherenkov telescopes, such as the Very Energetic Radiation Imaging Tele-scope Array System (VERITAS), are uniquely suited to resolve the detailed morphology ofextended regions of gamma-ray emission. However, standard…

Instrumentation and Methods for Astrophysics · Physics 2021-08-18 B. Hona , for the VERITAS Collaboration

High Energy Astrophysics

The development of the atmospheric Cherenkov imaging technique has led to significant advances in gamma-ray detection sensitivity in the energy range from 200 GeV to 50 TeV. The Whipple Observatory 10m reflector has detected the first…

Astrophysics · Physics 2007-05-23 T. C. Weekes

Remote sensing of clouds and aerosols with cosmic rays

Remote sensing of atmosphere is conventionally done via a study of extinction / scattering of light from natural (Sun, Moon) or artificial (laser) sources. Cherenkov emission from extensive air showers generated by cosmic rays provides one…

Instrumentation and Methods for Astrophysics · Physics 2015-06-19 A. Neronov , D. Malyshev , A. Dmytriiev

Direct measurement of stellar angular diameters by the VERITAS Cherenkov Telescopes

The angular size of a star is a critical factor in determining its basic properties. Direct measurement of stellar angular diameters is difficult: at interstellar distances stars are generally too small to resolve by any individual imaging…

Solar and Stellar Astrophysics · Physics 2019-04-15 W. Benbow , R. Bird , A. Brill , R. Brose , A. J. Chromey , M. K. Daniel , Q. Feng , J. P. Finley , L. Fortson , A. Furniss , G. H. Gillanders , C. Giuri , O. Gueta , D. Hanna , J. Halpern , T. Hassan , J. Holder , G. Hughes , T. B. Humensky , A. M. Joyce , P. Kaaret , P. Kar , N. Kelley-Hoskins , M. Kertzman , D. Kieda , M. Krause , M. J. Lang , T. T. Y. Lin , G. Maier , N. Matthews , P. Moriarty , R. Mukherjee , D. Nieto , M. Nievas-Rosillo , S. O'Brien , R. A. Ong , N. Park , A. Petrashyk , M. Pohl , E. Pueschel , J. Quinn , K. Ragan , P. T. Reynolds , G. T. Richards , E. Roache , C. Rulten , I. Sadeh , M. Santander , G. H. Sembroski , K. Shahinyan , I. Sushch , S. P. Wakely , R. M. Wells , P. Wilcox , A. Wilhelm , D. A. Williams , T. J. Williamson

Calibration of the Air Shower Energy Scale of the Water and Air Cherenkov Techniques in the LHAASO experiment

The Wide Field-of-View Cherenkov Telescope Array (WFCTA) and the Water Cherenkov Detector Arrays (WCDA) of LHAASO are designed to work in combination for measuring the energy spectra of various cosmic ray species over a very wide energy…

Instrumentation and Methods for Astrophysics · Physics 2021-09-22 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. DEttorre 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. Saiz , 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 , 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

Recent VERITAS Results

VERITAS is an array of four imaging atmospheric Cherenkov telescopes near Tucson, Arizona and is one of the world's most sensitive detectors of very high energy (VHE: >100 GeV) gamma rays. The scientific reach of VERITAS covers the study of…

High Energy Astrophysical Phenomena · Physics 2019-08-13 David Staszak

The throughput calibration of the VERITAS telescopes

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…

Instrumentation and Methods for Astrophysics · Physics 2022-02-09 C. B. Adams , W. Benbow , A. Brill , J. H. Buckley , J. L. Christiansen , A. Falcone , Q. Feng , J. P. Finley , G. M Foote , L. Fortson , A. Furniss , C. Giuri , D. Hanna , T. Hassan , O. Hervet , J. Holder , B. Hona , T. B. Humensky , W. Jin , P. Kaaret , T. K Kleiner , S. Kumar , M. J. Lang , M. Lundy , G. Maier , P. Moriarty , R. Mukherjee , M. Nievas Rosillo , S. O'Brien , N. Park , S. Patel , K. Pfrang , M. Pohl , R. R. Prado , E. Pueschel , J. Quinn , K. Ragan , P. T. Reynolds , D. Ribeiro , E. Roache , J. L. Ryan , M. Santander , A. Weinstein , D. A. Williams , T. J Williamson

Improved energy resolution for VHE gamma-ray astronomy with systems of Cherenkov telescopes

We present analysis techniques to improve the energy resolution of stereoscopic systems of imaging atmospheric Cherenkov telescopes, using the HEGRA telescope system as an example. The techniques include (i) the determination of the height…

Astrophysics · Physics 2011-05-23 W. Hofmann , H. Lampeitl , A. Konopelko , H. Krawczynski

The Disp Method for Analysing Large Zenith Angle Gamma-Ray Data

The Disp method is an algorithm that is used for reconstruction of primary gamma ray direction in ground- based atmospheric Cherenkov telescope experiments -measuring very-high-energy (VHE) gamma rays in the energy range between 100GeV and…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 G. D. Şentürk

Temporal signatures of the Cherenkov light induced by extensive air showers of cosmic rays detected with the Yakutsk array

We analyze temporal characteristics of signals from the wide field-of-view (WFOV) Cherenkov telescope (CT) detecting extensive air showers (EAS) of cosmic rays (CR) in coincidence with surface detectors of the Yakutsk array. Our aim is to…

Instrumentation and Methods for Astrophysics · Physics 2016-05-24 A. A. Ivanov , L. V. Timofeev

Measurement of Cosmic-ray Electrons at TeV Energies by VERITAS

Cosmic-ray electrons and positrons (CREs) at GeV-TeV energies are a unique probe of our local Galactic neighborhood. CREs lose energy rapidly via synchrotron radiation and inverse-Compton scattering processes while propagating within the…

High Energy Astrophysical Phenomena · Physics 2019-02-20 VERITAS Collaboration , A. Archer , W. Benbow , R. Bird , R. Brose , M. Buchovecky , J. H. Buckley , V. Bugaev , M. P. Connolly , W. Cui , Q. Feng , J. P. Finley , L. Fortson , A. Furniss , G. Gillanders , M. Hütten , D. Hanna , O. Hervet , J. Holder , G. Hughes , T. B. Humensky , C. A. Johnson , P. Kaaret , P. Kar , N. Kelley-Hoskins , M. Kertzman , D. Kieda , M. Krause , F. Krennrich , S. Kumar , M. J. Lang , T. T. Y. Lin , G. Maier , S. McArthur , P. Moriarty , R. Mukherjee , S. O'Brien , R. A. Ong , A. N. Otte , A. Petrashyk , M. Pohl , E. Pueschel , J. Quinn , K. Ragan , P. T. Reynolds , G. T. Richards , E. Roache , C. Rulten , I. Sadeh , M. Santander , G. H. Sembroski , D. Staszak , I. Sushch , J. Tyler , S. P. Wakely , R. M. Wells , P. Wilcox , A. Wilhelm , D. A. Williams , T. J Williamson , B. Zitzer

The Track Imaging Cerenkov Experiment

We describe a dedicated cosmic-ray telescope that explores a new method for detecting Cerenkov radiation from high-energy primary cosmic rays and the large particle air shower they induce upon entering the atmosphere. Using a camera…

Instrumentation and Methods for Astrophysics · Physics 2011-07-19 S. A. Wissel , K. Byrum , J. D. Cunningham , G. Drake , E. Hays , D. Horan , D. Kieda , E. Kovacs , S. Magill , L. Nodulman , S. P. Swordy , R. Wagner , S. P. Wakely

ALTAI: Computational code for the simulations of TeV air showers as observed with the ground-based imaging atmospheric Cherenkov telescopes

Ground-based atmospheric Cherenkov telescopes are proven to be effective instruments for observations of very high energy (VHE) gamma-radiation from celestial objects. For effective use of such technique one needs detailed Monte Carlo…

Astrophysics · Physics 2009-10-31 A. Konopelko , A. Plyasheshnikov

VERITAS Distant Laser Calibration and Atmospheric Monitoring

As a calibrated laser pulse propagates through the atmosphere, the intensity of the Rayleigh scattered light arriving at the VERITAS telescopes can be calculated precisely. This allows for absolute calibration of imaging atmospheric…

Astrophysics · Physics 2019-08-13 C. M. Hui

The First VERITAS Telescope

The first atmospheric Cherenkov telescope of VERITAS (the Very Energetic Radiation Imaging Telescope Array System) has been in operation since February 2005. We present here a technical description of the instrument and a summary of its…

Astrophysics · Physics 2008-11-26 J. Holder , R. W. Atkins , H. M. Badran , G. Blaylock , S. M. Bradbury , J. H. Buckley , K. L. Byrum , D. A. Carter-Lewis , O. Celik , Y. C. K. Chow , P. Cogan , W. Cui , M. K. Daniel , I. de la Calle Perez , C. Dowdall , P. Dowkontt , C. Duke , A. D. Falcone , S. J. Fegan , J. P. Finley , P. Fortin , L. F. Fortson , K. Gibbs , G. Gillanders , O. J. Glidewell , J. Grube , K. J. Gutierrez , G. Gyuk , J. Hall , D. Hanna , E. Hays , D. Horan , S. B. Hughes , T. B. Humensky , A. Imran , I. Jung , P. Kaaret , G. E. Kenny , D. Kieda , J. Kildea , J. Knapp , H. Krawczynski , F. Krennrich , M. J. Lang , S. LeBohec , E. Linton , E. K. Little , G. Maier , H. Manseri , A. Milovanovic , P. Moriarty , R. Mukherjee , P. A. Ogden , R. A. Ong , J. S. Perkins , F. Pizlo , M. Pohl , J. Quinn , K. Ragan , P. T. Reynolds , E. T. Roache , H. J. Rose , M. Schroedter , G. H. Sembroski , G. Sleege , D. Steele , S. P. Swordy , A. Syson , J. A. Toner , L. Valcarcel , V. V. Vassiliev , S. P. Wakely , T. C. Weekes , R. J. White , D. A. Williams , R. Wagner

A Cosmic-ray Electron Spectrum with VERITAS

Cosmic-ray electrons and positrons (CREs) at GeV-TeV energies are a unique probe of our local Galactic neighbourhood. CREs lose energy rapidly via inverse Compton scattering and synchrotron processes while propagating in the Galaxy,…

High Energy Astrophysical Phenomena · Physics 2019-08-13 David Staszak

Astrophysical measurements with the VERITAS Stellar Intensity Interferometer

Imaging Atmospheric Cherenkov Telescopes have long been viewed as potential light collectors to be used for long baseline optical intensity interferometry observations. Intensity interferometry, as implemented with Cherenkov telescopes, is…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 N. Matthews , S. LeBohec

Parameterisation of lateral density and arrival time distributions of Cherenkov photons in EASs as functions of independent shower parameters for different primaries

The simulation of Cherenkov photon's lateral density and arrival time distributions in Extensive Air Showers (EASs) was performed with the CORSIKA code in the energy range: 100 GeV to 100 TeV. On the basis of this simulation we obtained a…

Instrumentation and Methods for Astrophysics · Physics 2018-07-26 P. Hazarika , G. S. Das , U. D. Goswami