Related papers: Flux Sensitivity of VERITAS

VHE Observations of Galactic binary systems with VERITAS

A few Galactic objects are known to be variable sources of photons with energies above 100 GeV. These systems are mostly binaries, where variability can often be connected to the orbital period. Particle acceleration and gamma-ray…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Gernot Maier

A Fiber Optic Based High Voltage System for Stellar Intensity Interferometry Observations

Beginning in Fall 2018, the VERITAS high energy gamma-ray observatory (Amado, AZ) was upgraded to enable Stellar Intensity Interferometry (SII) observations during bright moon conditions. The system potentially allows VERITAS to spatially…

Instrumentation and Methods for Astrophysics · Physics 2019-08-09 Rylee Cardon , Nolan Matthews , A. Udara Abeysekara , David Kieda

Cherenkov Telescope Array: The Next Generation Gamma-ray Observatory

The Cherenkov Telescope Array (CTA) will be the next-generation gamma-ray observatory, investigating gamma-ray and cosmic ray astrophysics at energies from 20 GeV to more than 300 TeV. The observatory, consisting of large arrays of imaging…

High Energy Astrophysical Phenomena · Physics 2018-01-22 The CTA Consortium

VERITAS Observations of the Nova in V407 Cygni

We report on very high energy (E > 100 GeV) gamma-ray observations of V407 Cygni, a symbiotic binary that underwent a nova outburst producing 0.1-10 GeV gamma rays during 2010 March 10-26. Observations were made with the Very Energetic…

High Energy Astrophysical Phenomena · Physics 2015-06-05 E. Aliu , S. Archambault , T. Arlen , T. Aune , M. Beilicke , W. Benbow , A. Bouvier , S. M. Bradbury , J. H. Buckley , V. Bugaev , K. Byrum , A. Cannon , A. Cesarini , L. Ciupik , E. Collins-Hughes , M. P. Connolly , W. Cui , G. Decerprit , R. Dickherber , C. Duke , J. Dumm , V. V. Dwarkadas , M. Errando , A. Falcone , Q. Feng , J. P. Finley , G. Finnegan , L. Fortson , A. Furniss , N. Galante , D. Gall , S. Godambe , S. Griffin , J. Grube , G. Gyuk , D. Hanna , J. Holder , H. Huan , G. Hughes , T. B. Humensky , P. Kaaret , N. Karlsson , M. Kertzman , Y. Khassen , D. Kieda , H. Krawczynski , F. Krennrich , M. J. Lang , K. Lee , G. Maier , P. Majumdar , S. McArthur , A. McCann , J. Millis , P. Moriarty , R. Mukherjee , P. D Nuñez , R. A. Ong , M. Orr , A. N. Otte , D. Pandel , N. Park , J. S. Perkins , M. Pohl , H. Prokoph , J. Quinn , K. Ragan , L. C. Reyes , P. T. Reynolds , E. Roache , H. J. Rose , J. Ruppel , D. B. Saxon , M. Schroedter , G. H. Sembroski , C. Skole , A. W. Smith , D. Staszak , I. Telezhinsky , G. Tešić , M. Theiling , S. Thibadeau , K. Tsurusaki , J. Tyler , A. Varlotta , S. Vincent , M. Vivier , S. P. Wakely , J. E. Ward , T. C. Weekes , A. Weinstein , T. Weisgarber , R. Welsing , D. A. Williams , B. Zitzer

VERITAS Observation of Gamma-Ray Bursts

During its first cycle of observations, VERITAS observed several GRBs in response to broadcast alerts from the Gamma-ray bursts Coordinates Network (GCN). The GRBs were followed up and observed thereafter with typical delays of 2 to 4…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Nicola Galante

Calibration and performance of the readout system based on switched capacitor arrays for the Large-Sized Telescope of the Cherenkov Telescope Array

The Cherenkov Telescope Array (CTA) is the next-generation ground-based very-high-energy gamma-ray observatory. The Large-Sized Telescope (LST) of CTA is designed to detect gamma rays between 20 GeV and a few TeV with a 23-meter diameter…

Instrumentation and Methods for Astrophysics · Physics 2022-03-15 Seiya Nozaki , Kyosuke Awai , Aya Bamba , Juan Abel Barrio , Maria Isabel Bernardos , Oscar Blanch , Joan Boix , Franca Cassol , Yuki Choushi , Carlos Delgado , Carlos Diaz , Nadia Fouque , Lluis Freixas , Pawel Gliwny , Shunichi Gunji , Daniela Hadasch , Dirk Hoffmann , Julien Houles , Yusuke Inome , Yuki Iwamura , Léa Jouvin , Hideaki Katagiri , Kiomei Kawamura , Daniel Kerszberg , Yusuke Konno , Hidetoshi Kubo , Junko Kushida , Yukiho Kobayashi , Rubén López-Coto , Gustavo Martinez , Shu Masuda , Daniel Mazin , Abelardo Moralejo , Elena Moretti , Tsutomu Nagayoshi , Takeshi Nakamori , Kyoshi Nishijima , Yuto Nogami , Leyre Nogués , Hideyuki Ohoka , Tomohiko Oka , Nao Okazaki , Akira Okumura , Reiko Orito , Jean-Luc Panazol , Riccardo Paoletti , Cristobal Pio , Miguel Polo , Julie Prast , Takayuki Saito , Shunsuke Sakurai , Julian Sitarek , Yuji Sunada , Megumi Suzuki , Mitsunari Takahashi , Kenji Tamura , Manobu Tanaka , Luis Angel Tejedor , Yukikatsu Terada , Masahiro Teshima , Yusuke Tsukamoto , Tokonatsu Yamamoto

The Cherenkov Telescope Array On-Site integral sensitivity: observing the Crab

The Cherenkov Telescope Array (CTA) is the future large observatory in the very high energy (VHE) domain. Operating from 20 GeV to 300 TeV, it will be composed of tens of Imaging Air Cherenkov Telescopes (IACTs) displaced in a large area of…

Instrumentation and Methods for Astrophysics · Physics 2016-08-18 Valentina Fioretti , Andrea Bulgarelli , Fabian Schussler

VERITAS 2008 - 2009 monitoring of the variable gamma-ray source M87

M87 is a nearby radio galaxy that is detected at energies ranging from radio to VHE gamma-rays. Its proximity and its jet, misaligned from our line-of-sight, enable detailed morphological studies and extensive modeling at radio, optical,…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-12 The VERITAS Collaboration , V. A. Acciari , E. Aliu , T. Arlen , T. Aune , M. Beilicke , W. Benbow , D. Boltuch , S. M. Bradbury , J. H. Buckley , V. Bugaev , K. Byrum , A. Cannon , A. Cesarini , Y. C. Chow , L. Ciupik , P. Cogan , W. Cui , R. Dickherber , C. Duke , J. P. Finley , G. Finnegan , P. Fortin , L. Fortson , A. Furniss , N. Galante , D. Gall , G. H. Gillanders , S. Godambe , J. Grube , R. Guenette , G. Gyuk , D. Hanna , J. Holder , C. M. Hui , T. B. Humensky , A. Imran , P. Kaaret , N. Karlsson , M. Kertzman , D. Kieda , A. Konopelko , H. Krawczynski , F. Krennrich , M. J. Lang , S. LeBohec , G. Maier , S. McArthur , A. McCann , M. McCutcheon , J. Millis , P. Moriarty , R. A. Ong , A. N. Otte , D. Pandel , J. S. Perkins , A. M. J. Quinn , K. Ragan , L. C. Reyes , P. T. Reynolds , E. Roache , H. J. Rose , A. C. Rovero , M. Schroedter , G. H. Sembroski , G. Demet Senturk , A. W. Smith , D. Steele , S. P. Swordy , M. Theiling , S. Thibadeau , A. Varlotta , S. Vincent , R. G. Wagner , S. P. Wakely , J. E. Ward , T. C. Weekes , A. Weinstein , T. Weisgarber , D. A. Williams , S. Wissel , M. Wood , B. Zitzer , Chandra M87 Monitoring , : , D. E. Harris , F. Massaro

VERITAS Observations of Extragalactic Non-Blazars

During the 2007/2008 season, VERITAS was used for observations at E>200 GeV of several extragalactic non-blazar objects such as galaxy clusters, starburst and interacting galaxies, dwarf galaxies, and nearby galaxies. In these proceedings,…

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

The Cherenkov Telescope Array: layout, design and performance

The Cherenkov Telescope Array (CTA) will be the next generation very-high-energy gamma-ray observatory. CTA is expected to provide substantial improvement in accuracy and sensitivity with respect to existing instruments thanks to a tenfold…

Instrumentation and Methods for Astrophysics · Physics 2021-08-23 Orel Gueta

Detection of Extended VHE Gamma Ray Emission from G106.3+2.7 with VERITAS

We report the detection of very-high-energy (VHE) gamma-ray emission from supernova remnant (SNR) G106.3+2.7. Observations performed in 2008 with the VERITAS atmospheric Cherenkov gamma-ray telescope resolve extended emission overlapping…

High Energy Astrophysical Phenomena · Physics 2014-11-20 VERITAS Collaboration , V. A. Acciari , E. Aliu , T. Arlen , T. Aune , M. Bautista , M. Beilicke , W. Benbow , D. Boltuch , S. M. Bradbury , J. H. Buckley , V. Bugaev , Y. Butt , K. Byrum , A. Cannon , A. Cesarini , Y. C. Chow , L. Ciupik , P. Cogan , W. Cui , R. Dickherber , T. Ergin , S. J. Fegan , J. P. Finley , P. Fortin , L. Fortson , A. Furniss , D. Gall , G. H. Gillanders , E. V. Gotthelf , J. Grube , R. Guenette , G. Gyuk , D. Hanna , J. Holder , D. Horan , C. M. Hui , T. B. Humensky , P. Kaaret , N. Karlsson , M. Kertzman , D. Kieda , A. Konopelko , H. Krawczynski , F. Krennrich , M. J. Lang , S. LeBohec , G. Maier , A. McCann , M. McCutcheon , J. Millis , P. Moriarty , R. Mukherjee , R. A. Ong , A. N. Otte , D. Pandel , J. S. Perkins , M. Pohl , J. Quinn , K. Ragan , L. C. Reyes , P. T. Reynolds , E. Roache , H. J. Rose , M. Schroedter , G. H. Sembroski , A. W. Smith , D. Steele , S. P. Swordy , M. Theiling , J. A. Toner , V. V. Vassiliev , S. Vincent , R. G. Wagner , S. P. Wakely , J. E. Ward , T. C. Weekes , A. Weinstein , T. Weisgarber , D. A. Williams , S. Wissel , M. Wood , B. Zitzer

VERITAS results from a three-year observing campaign on the BL Lac object 1ES 0229+200

The BL Lac object 1ES 0229+200 is a firmly established very-high-energy (VHE; E >100 GeV) source. Located at a redshift of 0.1396, its published VHE spectrum is particularly hard (Gamma ~2.5) and is widely used to perform studies on the…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Matteo Cerruti

FLASH: Faint Lenses from Associated Selection with Herschel

We report the ALMA Band 7 observations of 86 Herschel sources that likely contain gravitationally-lensed galaxies. These sources are selected with relatively faint 500 $\mu$m flux densities between 15 to 85 mJy in an effort to characterize…

Astrophysics of Galaxies · Physics 2023-11-30 Tom J. L. C. Bakx , Bethany S. Gray , Joaquin González-Nuevo , Laura Bonavera , Aristeidis Amvrosiadis , Stephen Eales , Masato Hagimoto , Stephen Serjeant

Optimizing the Wasserstein GAN for TeV Gamma Ray Detection with VERITAS

The observation of very-high-energy (VHE, E>100 GeV) gamma rays is mediated by the imaging atmospheric Cherenkov technique (IACTs). At these energies, gamma rays interact with the atmosphere to create a cascade of electromagnetic air…

High Energy Astrophysical Phenomena · Physics 2023-09-22 Deivid Ribeiro , Yuping Zheng , Ramana Sankar , Kameswara Mantha

Very High Energy Gamma-Ray Observations with H.E.S.S

The H.E.S.S. Imaging Atmospheric Cherenkov Telescope Array is currently the most sensitive instrument for Very High Energy (VHE) gamma-ray observations in the energy range of about 0.1-10 TeV. During more than two years of operation with…

Astrophysics · Physics 2007-05-23 Christopher van Eldik

The Galactic Center Region Imaged by VERITAS from 2010-2012

The galactic center (GC) has long been a region of interest for high-energy and very-high-energy observations. Many potential sources of GeV/TeV gamma-ray emission are located in the GC region, e.g. the accretion of matter onto the central…

High Energy Astrophysical Phenomena · Physics 2015-06-11 M. Beilicke , the VERITAS Collaboration

Sensitivity of the High Altitude Water Cherenkov Detector to Sources of Multi-TeV Gamma Rays

The High Altitude Water Cherenkov (HAWC) observatory is an array of large water Cherenkov detectors sensitive to gamma rays and hadronic cosmic rays in the energy band between 100 GeV and 100 TeV. The observatory will be used to measure…

High Energy Astrophysical Phenomena · Physics 2016-08-11 A. U. Abeysekara , R. Alfaro , C. Alvarez , J. D. Álvarez , R. Arceo , J. C. Arteaga-Velázquez , H. A. Ayala Solares , A. S. Barber , B. M. Baughman , N. Bautista-Elivar , E. Belmont , S. Y. BenZvi , D. Berley , M. Bonilla Rosales , J. Braun , R. A. Caballero-Lopez , A. Carramiñana , M. Castillo , U. Cotti , J. Cotzomi , E. de la Fuente , C. De León , T. DeYoung , R. Diaz Hernandez , J. C. Diaz-Velez , B. L. Dingus , M. A. DuVernois , R. W. Ellsworth , A. Fernandez , D. W. Fiorino , N. Fraija , A. Galindo , J. L. Garcia-Luna , G. Garcia-Torales , F. Garfias , L. X. González , M. M. González , J. A. Goodman , V. Grabski , M. Gussert , Z. Hampel-Arias , C. M. Hui , P. Hüntemeyer , A. Imran , A. Iriarte , P. Karn , D. Kieda , G. J. Kunde , A. Lara , R. J. Lauer , W. H. Lee , D. Lennarz , H. León Vargas , E. C. Linares , J. T. Linnemann , M. Longo , R. Luna-García , A. Marinelli , O. Martinez , J. Martínez-Castro , J. A. J. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafá , J. Nava , L. Nellen , M. Newbold , R. Noriega-Papaqui , T. Oceguera-Becerra , B. Patricelli , R. Pelayo , E. G. Pérez-Pérez , J. Pretz , C. Rivière , D. Rosa-González , H. Salazar , F. Salesa , A. Sandoval , E. Santos , M. Schneider , S. Silich , G. Sinnis , A. J. Smith , K. Sparks , R. W. Springer , I. Taboada , P. A. Toale , K. Tollefson , I. Torres , T. N. Ukwatta , L. Villaseñor , T. Weisgarber , S. Westerhoff , I. G. Wisher , J. Wood , G. B. Yodh , P. W. Younk , D. Zaborov , A. Zepeda , H. Zhou

Observations of the shell-type SNR Cassiopeia A at TeV energies with VERITAS

We report on observations of very high-energy gamma rays from the shell-type supernova remnant Cassiopeia A with the VERITAS stereoscopic array of four imaging atmospheric Cherenkov telescopes in Arizona. The total exposure time for these…

High Energy Astrophysical Phenomena · Physics 2010-04-30 The VERITAS Collaboration , V. A. Acciari , E. Aliu , T. Arlen , T. Aune , M. Bautista , M. Beilicke , W. Benbow , D. Boltuch , S. M. Bradbury , J. H. Buckley , V. Bugaev , Y. Butt , K. Byrum , A. Cannon , A. Cesarini , Y. C. Chow , L. Ciupik , P. Cogan , W. Cui , R. Dickherber , C. Duke , T. Ergin , S. J. Fegan , J. P. Finley , G. Finnegan , P. Fortin , L. Fortson , A. Furniss , N. Galante , D. Gall , G. H. Gillanders , J. Grube , R. Guenette , G. Gyuk , D. Hanna , J. Holder , D. Huang , C. M. Hui , T. B. Humensky , P. Kaaret , N. Karlsson , M. Kertzman , D. Kieda , A. Konopelko , H. Krawczynski , F. Krennrich , M. J. Lang , S. LeBohec , G. Maier , S. McArthur , A. McCann , M. McCutcheon , J. Millis , P. Moriarty , R. A. Ong , D. Pandel , J. S. Perkins , M. Pohl , J. Quinn , K. Ragan , P. T. Reynolds , E. Roache , H. J. Rose , M. Schroedter , G. H. Sembroski , A. W. Smith , B. R. Smith , D. Steele , S. P. Swordy , M. Theiling , S. Thibadeau , A. Varlotta , V. V. Vassiliev , S. Vincent , R. G. Wagner , S. P. Wakely , J. E. Ward , T. C. Weekes , A. Weinstein , T. Weisgarber , S. Wissel , M. Wood

Highlights of Recent Multiwavelength Observations of VHE Blazars with VERITAS

We present long-term observations of several VHE (E > 100 GeV) blazars with VERITAS, together with contemporaneous Swift and RXTE X-ray data. The observed targets include Mrk 421, Mrk 501, 1ES 2344+514. Strong flux and spectral variability…

High Energy Astrophysical Phenomena · Physics 2019-08-13 J. Grube

Observations of Gamma-ray Bursts with VERITAS and Whipple

Many authors have predicted very-high-energy (VHE; E > 100 GeV) emission from gamma-ray bursts (GRBs) both during the prompt phase and during the multi-component afterglow. To date, however, there has been no definitive detection of such…

Astrophysics · Physics 2019-08-13 D. Horan