Related papers: VERITAS Detection of LS 5039 and HESS J1825-137

Evidence for long-term Gamma-ray and X-ray variability from the unidentified TeV source HESS J0632+057

HESS J0632+057 is one of only two unidentified very-high-energy gamma-ray sources which appear to be point-like within experimental resolution. It is possibly associated with the massive Be star MWC 148 and has been suggested to resemble…

High Energy Astrophysical Phenomena · Physics 2011-02-11 VERITAS Collaboration , V. A. Acciari , E. Aliu , T. Arlen , M. Beilicke , W. Benbow , D. Boltuch , S. M. Bradbury , J. H. Buckley , V. Bugaev , K. Byrum , A. Cannon , A. Cesarini , A. Cesarini , Y. C. Chow , L. Ciupik , P. Cogan , R. Dickherber , C. Duke , T. Ergin , A. Falcone , S. J. Fegan , J. P. Finley , G. Finnegan , P. Fortin , L. Fortson , A. Furniss , K. Gibbs , G. H. Gillanders , J. Grube , R. Guenette , G. Gyuk , D. Hanna , J. Holder , D. Horan , C. M. Hui , T. B. Humensky , A. Imran , P. Kaaret , N. Karlsson , M. Kertzman , D. Kieda , J. Kildea , 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 , D. Petry , M. Pohl , J. Quinn , K. Ragan , L. C. Reyes , P. T. Reynolds , H. J. Rose , M. Schroedter , G. H. Sembroski , A. W. Smith , D. Steele , M. Theiling , J. A. Toner , A. Varlotta , 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

VERITAS Observations of HESS J1943+213

HESS J1943+213 is a very-high-energy (VHE; >100 GeV) gamma-ray point source detected during the H.E.S.S. Galactic Plane Survey. Radio, infrared, X-ray, and GeV gamma-ray counterparts have been identified for HESS J1943+213; however, the…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Karlen Shahinyan

VERITAS observations of HESS J0632+057

HESS J0632+057 is one of only two unidentified high energy gamma-ray sources which appear to be point-like in nature. It is possibly associated with the massive star MWC 148 and has been suggested to resemble known TeV binary systems like…

High Energy Astrophysical Phenomena · Physics 2019-08-13 G. Maier

Observation of Galactic Gamma-ray Sources with VERITAS

We report on VERITAS observations at energies above 200 GeV of known or potential galactic gamma-ray sources. The observed objects comprise pulsars, pulsar wind nebulae, high-mass X-ray binaries and gamma-ray sources with unknown…

Astrophysics · Physics 2019-08-13 G. Maier

Long-term TeV Observations of the Gamma-ray Binary HESS J0632+057 with VERITAS

The gamma-ray binary HESS J0632+057 has been observed at very-high energies for almost ten years by all major systems of imaging atmospheric Cherenkov telescopes. We present new observations taken by the VERITAS observatory and an updated…

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

VERITAS Discovery of Very High-Energy Gamma-Ray Emission from RGB J2243+203

RGB J2243+203 is a blazar at an estimated redshift of greater than 0.39 that has been classified both as an intermediate-frequency-peaked BL Lac object and as a high-frequency-peaked BL Lac object. This source has been detected by VERITAS…

High Energy Astrophysical Phenomena · Physics 2019-08-13 A. U. Abeysekara

VERITAS discovery of very high energy gamma-ray emission from S3 1227+25 and multiwavelength observations

We report the detection of very high energy gamma-ray emission from the blazar S3 1227+25 (VER J1230+253) with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). VERITAS observations of the source were triggered by the…

High Energy Astrophysical Phenomena · Physics 2023-06-21 Atreya Acharyya , Colin Adams , Avery Archer , Priyadarshini Bangale , Wystan Benbow , Aryeh Brill , Jodi Christiansen , Alisha Chromey , Manel Errando , Abe Falcone , Qi Feng , John Finley , Gregory Foote , Lucy Fortson , Amy Furniss , Greg Gallagher , William Hanlon , David Hanna , Olivier Hervet , Claire Hinrichs , John Hoang , Jamie Holder , Weidong Jin , Madalyn Johnson , Philip Kaaret , Mary P. Kertzman , David Kieda , Tobias Kleiner , Nikolas Korzoun , Frank Krennrich , Mark Lang , Matthew Lundy , Gernot Maier , Conor McGrath , Matthew Millard , John Millis , Connor Mooney , Patrick Moriarty , Reshmi Mukherjee , Stephan O'Brien , Rene A. Ong , Martin Pohl , Elisa Pueschel , John Quinn , Kenneth J. Ragan , Paul Reynolds , Deivid Ribeiro , Emmet Thomas Roache , Iftach Sadeh , Alberto Sadun , Lab Saha , Marcos Santander , Glenn Sembroski , Ruo Shang , Megan Splettstoesser , Anjana Talluri , James Tucci , Vladimir Vassiliev , David Williams , Sam Wong , Talvikki Hovatta , Svetlana Jorstad , Sebastian Kiehlmann , Anne Lahteenmaki , Ioannis Liodakis , Alan Marscher , Walter Max-Moerbeck , Anthony Readhead , Rodrigo Reeves , Paul S Smith , Merja Tornikoski

VERITAS Observations of TeV Binaries

Since the commissioning of the array in Spring 2007, the VERITAS array (sensitive in the 0.1-50 TeV energy range) has acquired over 300 hours of observations investigating the TeV emission from X-ray binary star systems, in particular…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Andrew W. Smith

VERITAS Observations of the gamma-Ray Binary LS I +61 303

LS I +61 303 is one of only a few high-mass X-ray binaries currently detected at high significance in very high energy gamma-rays. The system was observed over several orbital cycles (between September 2006 and February 2007) with the…

Astrophysics · Physics 2009-11-13 V. A. Acciari , M. Beilicke , G. Blaylock , S. M. Bradbury , J. H. Buckley , V. Bugaev , Y. Butt , K. L. Byrum , O. Celik , A. Cesarini , L. Ciupik , Y. C. K. Chow , P. Cogan , P. Colin , W. Cui , M. K. Daniel , C. Duke , T. Ergin , A. D. Falcone , S. J. Fegan , J. P. Finley , P. Fortin , L. F. Fortson , D. Gall , K. Gibbs , G. H. Gillanders , J. Grube R. Guenette , D. Hanna , E. Hays , J. Holder , D. Horan , S. B. Hughes , C. M. Hui , T. B. Humensky , P. Kaaret , D. B. Kieda , J. Kildea , A. Konopelko , H. Krawczynski , F. Krennrich , M. J. Lang , S. LeBohec , K. Lee , G. Maier , A. McCann , M. McCutcheon , J. Millis , P. Moriarty , R. Mukherjee , T. Nagai , R. A. Ong , D. Pandel , J. S. Perkins , F. Pizlo , M. Pohl , J. Quinn , K. Ragan , P. T. Reynolds , H. J. Rose , M. Schroedter , G. H. Sembroski , A. W. Smith , D. Steele , S. P. Swordy , J. A. Toner , L. Valcarcel , V. V. Vassiliev , R. Wagner , S. P. Wakely , J. E. Ward , T. C. Weekes , A. Weinstein , R. J. White , D. A. Williams , S. A. Wissel , M. Wood , B. Zitzer

VERITAS Observations of the Unidentified Point Source HESS J1943+213

The H.E.S.S. Galactic plane scan has revealed a large population of Galactic very high energy (VHE; E > 100 GeV) emitters. The majority of the galactic sources are extended and can typically be associated with pulsar wind nebulae (35%) and…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Karlen Shahinyan

VHE Observations of Galactic binary systems with VERITAS

Gamma-ray binaries are variable sources of GeV-to-TeV photons with the peak in their spectral energy distributions above 100 MeV. There are only five Galactic gamma-ray binaries known and the processes which govern particle acceleration,…

High Energy Astrophysical Phenomena · Physics 2017-08-15 Gernot Maier , the VERITAS Collaboration

VERITAS and Fermi-LAT observations of new HAWC sources

The HAWC (High Altitude Water Cherenkov) collaboration recently published their 2HWC catalog, listing 39 very high energy (VHE; >100~GeV) gamma-ray sources based on 507 days of observation. Among these, there are nineteen sources that are…

High Energy Astrophysical Phenomena · Physics 2018-11-02 VERITAS Collaboration , A. U. Abeysekara , A. Archer , W. Benbow , R. Bird , R. Brose , M. Buchovecky , J. H. Buckley , V. Bugaev , A. J. Chromey , M. P. Connolly , W. Cui , M. K. Daniel , A. Falcone , Q. Feng , J. P. Finley , L. Fortson , A. Furniss , M. Hutten , D. Hanna , O. Hervet , J. Holder , G. Hughes , T. B. Humensky , C. A. Johnson , P. Kaaret , P. Kar , M. Kertzman , D. Kieda , M. Krause , F. Krennrich , S. Kumar , M. J. Lang , T. T. Y. Lin , S. McArthur , P. Moriarty , R. Mukherjee , S. O'Brien , R. A. Ong , A. N. Otte , 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 , J. Tyler , S. P. Wakely , A. Weinstein , R. M. Wells , P. Wilcox , A. Wilhelm , D. A. Williams , T. J. Williamson , B. Zitzer , Fermi-LAT Collaboration , : , S. Abdollahi , M. Ajello , L. Baldini , G. Barbiellini , D. Bastieri , R. Bellazzini , B. Berenji , E. Bissaldi , R. D. Blandford , R. Bonino , E. Bottacini , T. J. Brandt , P. Bruel , R. Buehler , R. A. Cameron , R. Caputo , P. A. Caraveo , D. Castro , E. Cavazzuti , E. Charles , G. Chiaro , S. Ciprini , J. Cohen-Tanugi , D. Costantin , S. Cutini , F. D'Ammando , F. de Palma , N. Di Lalla , M. Di Mauro , L. Di Venere , A. Dominguez , C. Favuzzi , S. J. Fegan , A. Franckowiak , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , N. Giglietto , F. Giordano , M. Giroletti , D. Green , I. A. Grenier , L. Guillemot , S. Guiriec , E. Hays , J. W. Hewitt , D. Horan , G. Johannesson , S. Kensei , M. Kuss , S. Larsson , L. Latronico , M. Lemoine-Goumard , J. Li , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , J. D. Magill , S. Maldera , M. N. Mazziotta , J. E. McEnery , P. F. Michelson , W. Mitthumsiri , T. Mizuno , M. E. Monzani , A. Morselli , I. V. Moskalenko , M. Negro , E. Nuss , R. Ojha , N. Omodei , M. Orienti , E. Orlando , M. Palatiello , V. S. Paliya , D. Paneque , J. S. Perkins , M. Persic , M. Pesce-Rollins , V. Petrosian , F. Piron , T. A. Porter , G. Principe , S. Raino , R. Rando , B. Rani , M. Razzano , S. Razzaque , A. Reimer , O. Reimer , T. Reposeur , C. Sgro , E. J. Siskind , G. Spandre , P. Spinelli , D. J. Suson , H. Tajima , J. B. Thayer , D. J. Thompson , D. F. Torres , G. Tosti , E. Troja , J. Valverde , G. Vianello , M. Vogel , K. Wood , M. Yassine , HAWC Collaboration , : , R. Alfaro , C. Alvarez , J. D. Alvarez , R. Arceo , J. C. Arteaga-Velazquez , D. Avila Rojas , H. A. Ayala Solares , A. Becerril , E. Belmont-Moreno , S. Y. BenZvi , A. Bernal , J. Braun , C. Brisbois , K. S. Caballero-Mora , T. Capistran , A. Carraminana , S. Casanova , M. Castillo , U. Cotti , J. Cotzomi , S. Coutino de Leon , C. De Leon , E. De la Fuente , S. Dichiara , B. L. Dingus , M. A. DuVernois , J. C. Diaz-Velez , K. Engel , O. Enriquez-Rivera , D. W. Fiorino , H. Fleischhack , N. Fraija , J. A. Garcia-Gonzalez , F. Garfias , A. Gonzalez Munoz , M. M. Gonzalez , J. A. Goodman , Z. Hampel-Arias , J. P. Harding , S. Hernandez , A. Hernandez-Almada , B. Hona , F. Hueyotl-Zahuantitla , C. M. Hui , P. Huntemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , A. Lara , R. J. Lauer , W. H. Lee , D. Lennarz , H. Leon Vargas , J. T. Linnemann , A. L. Longinotti , G. Luis-Raya , R. Luna-Garcia , R. Lopez-Coto , K. Malone , S. S. Marinelli , O. Martinez , I. Martinez-Castellanos , J. Martinez-Castro , H. Martinez-Huerta , J. A. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafa , A. Nayerhoda , L. Nellen , M. Newbold , M. U. Nisa , R. Noriega-Papaqui , R. Pelayo , J. Pretz , E. G. Perez-Perez , Z. Ren , C. D. Rho , C. Riviere , D. Rosa-Gonzalez , M. Rosenberg , E. Ruiz-Velasco , H. Salazar , F. Salesa Greus , A. Sandoval , M. Schneider , M. Seglar Arroyo , G. Sinnis , A. J. Smith , R. W. Springer , P. Surajbali , I. Taboada , O. Tibolla , K. Tollefson , I. Torres , T. N. Ukwatta , L. Villasenor , T. Weisgarber , S. Westerhoff , I. G. Wisher , J. Wood , T. Yapici , G. Yodh , A. Zepeda , H. Zhou

Observations of the unidentified gamma-ray source TeV J2032+4130 by VERITAS

TeV J2032+4130 was the first unidentified source discovered at very high energies (VHE; E $>$ 100 GeV), with no obvious counterpart in any other wavelength. It is also the first extended source to be observed in VHE gamma rays. Following…

High Energy Astrophysical Phenomena · Physics 2015-06-18 VERITAS Collaboration , E. Aliu , T. Aune , B. Behera , M. Beilicke , W. Benbow , K. Berger , R. Bird , J. H. Buckley , V. Bugaev , J. V Cardenzana , M. Cerruti , X. Chen , L. Ciupik , M. P. Connolly , W. Cui , C. Duke , J. Dumm , M. Errando , A. Falcone , S. Federici , Q. Feng , J. P. Finley , P. Fortin , L. Fortson , A. Furniss , N. Galante , G. H. Gillanders , S. Griffin , S. T. Griffiths , J. Grube , G. Gyuk , D. Hanna , J. Holder , G. Hughes , T. B. Humensky , O. Kargaltsev , P. Kaaret , M. Kertzman , Y. Khassen , D. Kieda , H. Krawczynski , M. J. Lang , A. S Madhavan , G. Maier , P. Majumdar , A. McCann , P. Moriarty , R. Mukherjee , D. Nieto , A. O'Faolain de Bhroithe , R. A. Ong , A. N. Otte , D. Pandel , J. S. Perkins , M. Pohl , A. Popkow , H. Prokoph , J. Quinn , K. Ragan , J. Rajotte , L. C. Reyes , P. T. Reynolds , G. T. Richards , E. Roache , G. H. Sembroski , C. Skole , D. Staszak , I. Telezhinsky , M. Theiling , J. V. Tucci , J. Tyler , A. Varlotta , S. Vincent , S. P. Wakely , T. C. Weekes , A. Weinstein , R. Welsing , D. A. Williams , B. Zitzer

Highlights of Galactic Physics with VERITAS

VERITAS (Very Energetic Radiation Imaging Telescope Array System) is one of the most sensitive currently operating arrays of imaging atmospheric Cherenkov telescopes, which detect very high-energy (VHE; E > 100 GeV) gamma rays. VERITAS is…

High Energy Astrophysical Phenomena · Physics 2019-08-16 Gregory T. Richards

VERITAS long-term (2006-2014) observations of the BL Lac object 1ES 0806+524

The discovery of the high-frequency-peaked BL Lac object 1ES 0806+524 (z=0.138) as a source of very-high-energy (VHE, E>100 GeV) gamma-ray photons was announced in 2008 by the VERITAS Collaboration, at a level of 1.8% of the Crab Nebula…

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

VERITAS observations of exceptionally bright TeV flares from LS I +61$^\circ$ 303

The very-high-energy (VHE; E > 100 GeV) gamma-ray experiment, VERITAS, detected exceptionally bright flares from the high-mass X-ray binary LS I +61$^\circ$ 303 during the period October-December 2014. LS I +61$^\circ$ 303 is a known VHE…

High Energy Astrophysical Phenomena · Physics 2015-08-28 Anna O'Faolain de Bhroithe , VERITAS collaboration

VERITAS Observations Contemporaneous with the LHAASO Detection of NGC 4278

Significant gamma-ray emission between 1 TeV and 20 TeV from a point source, 1LHAASO J1219+2915, consistent with the location of the LINER/LLAGN galaxy NGC 4278 was recently reported by the LHAASO collaboration. These data were later split…

High Energy Astrophysical Phenomena · Physics 2026-03-19 The VERITAS Collaboration , A. Archer , P. Bangale , J. T. Bartkoske , W. Benbow , J. H. Buckley , Y. Chen , J. L. Christiansen , A. J. Chromey , A. Duerr , M. Errando , M. Escobar Godoy , S. Feldman , Q. Feng , S. Filbert , L. Fortson , A. Furniss , W. Hanlon , O. Hervet , C. E. Hinrichs , J. Holder , Z. Hughes , T. B. Humensky , M. Iskakova , W. Jin , M. N. Johnson , M. Kertzman , M. Kherlakian , D. Kieda , T. K. Kleiner , N. Korzoun , S. Kumar , S. Kundu , M. J. Lang , M. Lundy , G. Maier , C. McSorley , P. Moriarty , R. Mukherjee , W. Ning , S. O'Brien , M. Ohishi , M. A. Ong , A. Pandey , C. Poggemann , M. Pohl , E. Pueschel , J. Quinn , P. L. Rabinowitz , K. Ragan , P. T. Reynolds , D. Ribeiro , L. Rizk , E. Roache , I. Sadeh , L. Saha , H. Salzmann , M. Santander , G. H. Sembroski , R. Shang , M. Splettstoesser , D. Tak , A. K. Talluri , I. Thoreson , J. V. Tucci , J. Valverde , D. A. Williams , S. L. Wong , T. Yoshikoshi

Observation of binary systems at very-high energies with VERITAS

Non-thermal variable emission from radio to very-high energy gamma rays (VHE; >100 GeV) are the prime characteristics of gamma-ray binaries. The underlying physical processes leading to the observed VHE emission are not well understood, as…

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

Highlights from VERITAS on VHE Gamma-ray Sources in our Galaxy

VERITAS is a major ground-based detector of very high energy (VHE, E > 100 GeV) gamma rays and cosmic rays. VERITAS consists of an ar- ray of four 12m-diameter atmospheric Cherenkov telescopes that has been fully operational since September…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Rene A. Ong

VERITAS Observations of X-ray Binaries

X-ray binaries stand as the brightest X-ray sources in the galaxy, showing both variable X-ray emission and extreme flares. Some of these systems have been recently discovered to be TeV gamma-ray emitters, with the high energy emission…

High Energy Astrophysical Phenomena · Physics 2019-08-13 R. Guenette