Related papers: Augmentation of VERITAS Telescopes for Stellar Int…

Performance and first measurements of the MAGIC Stellar Intensity Interferometer

In recent years, a new generation of optical intensity interferometers has emerged, leveraging the existing infrastructure of Imaging Atmospheric Cherenkov Telescopes (IACTs). The MAGIC telescopes host the MAGIC-SII system (Stellar…

Instrumentation and Methods for Astrophysics · Physics 2024-04-15 MAGIC Collaboration , S. Abe , J. Abhir , V. A. Acciari , A. Aguasca-Cabot , I. Agudo , T. Aniello , S. Ansoldi , L. A. Antonelli , A. Arbet Engels , C. Arcaro , M. Artero , K. Asano , A. Babić , A. Baquero , U. Barres de Almeida , J. A. Barrio , I. Batković , A. Bautista , J. Baxter , J. Becerra González , E. Bernardini , M. Bernardos , J. Bernete , A. Berti , J. Besenrieder , C. Bigongiari , A. Biland , O. Blanch , Ž. Bošnjak , I. Burelli , G. Busetto , A. Campoy-Ordaz , A. Carosi , R. Carosi , M. Carretero-Castrillo , G. Ceribella , Y. Chai , A. Cifuentes , E. Colombo , J. L. Contreras , J. Cortina , S. Covino , G. D'Amico , V. D'Elia , P. Da Vela , F. Dazzi , A. De Angelis , B. De Lotto , R. de Menezes , A. Del Popolo , M. Delfino , J. Delgado , C. Delgado Mendez , F. Di Pierro , L. Di Venere , D. Dominis Prester , A. Donini , D. Dorner , M. Doro , D. Elsaesser , G. Emery , J. Escudero , L. Fari na , A. Fattorini , L. Foffano , L. Font , S. Fröse , S. Fukami , Y. Fukazawa , R. J. García López , M. Garczarczyk , S. Gasparyan , M. Gaug , J. G. Giesbrecht Paiva , N. Giglietto , F. Giordano , P. Gliwny , T. Gradetzke , R. Grau , D. Green , J. G. Green , P. Günther , D. Hadasch , A. Hahn , T. Hassan , L. Heckmann , J. Herrera , D. Hrupec , M. Hütten , R. Imazawa , K. Ishio , I. Jiménez Martínez , J. Jormanainen , T. Kayanoki , D. Kerszberg , G. W. Kluge , Y. Kobayashi , P. M. Kouch , H. Kubo , J. Kushida , M. Láinez , A. Lamastra , F. Leone , E. Lindfors , L. Linhoff , S. Lombardi , F. Longo , R. López-Coto , M. López-Moya , A. López-Oramas , S. Loporchio , A. Lorini , E. Lyard , B. Machado de Oliveira Fraga , P. Majumdar , M. Makariev , G. Maneva , N. Mang , M. Manganaro , S. Mangano , K. Mannheim , M. Mariotti , M. Martínez , M. Martínez-Chicharro , A. Mas-Aguilar , D. Mazin , S. Menchiari , S. Mender , D. Miceli , T. Miener , J. M. Miranda , R. Mirzoyan , M. Molero González , E. Molina , H. A. Mondal , A. Moralejo , D. Morcuende , T. Nakamori , C. Nanci , V. Neustroev , L. Nickel , M. Nievas Rosillo , C. Nigro , L. Nikolić , K. Nilsson , K. Nishijima , T. Njoh Ekoume , K. Noda , S. Nozaki , Y. Ohtani , A. Okumura , J. Otero-Santos , S. Paiano , M. Palatiello , D. Paneque , R. Paoletti , J. M. Paredes , M. Peresano , M. Persic , M. Pihet , G. Pirola , F. Podobnik , P. G. Prada Moroni , E. Prandini , G. Principe , C. Priyadarshi , W. Rhode , M. Ribó , J. Rico , C. Righi , N. Sahakyan , T. Saito , K. Satalecka , F. G. Saturni , B. Schleicher , K. Schmidt , F. Schmuckermaier , J. L. Schubert , T. Schweizer , A. Sciaccaluga , G. Silvestri , J. Sitarek , V. Sliusar , D. Sobczynska , A. Spolon , A. Stamerra , J. Strišković , D. Strom , M. Strzys , Y. Suda , T. Surić , S. Suutarinen , H. Tajima , M. Takahashi , R. Takeishi , P. Temnikov , K. Terauchi , T. Terzić , M. Teshima S. Truzzi , A. Tutone , S. Ubach , J. van Scherpenberg , M. Vazquez Acosta , S. Ventura , I. Viale , C. F. Vigorito , V. Vitale , R. Walter , M. Will , C. Wunderlich , T. Yamamoto , G. Chon C. Díaz , M. Fiori , M. Lobo , G. Naletto , M. Polo , J. J. Rodríguez-Vázquez , P. Saha , L. Zampieri

The Gamma Ray Detection sensitivity of the upgraded VERITAS Observatory

The VERITAS VHE gamma-ray observatory recently completed a major upgrade of its camera and pattern triggering systems. Bias curve testing of the upgraded VERITAS Observatory under dark sky conditions indicates a 50% increase in photon…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 D. B. Kieda

Demonstration of stellar intensity interferometry with the four VERITAS telescopes

High angular resolution observations at optical wavelengths provide valuable insights in stellar astrophysics, directly measuring fundamental stellar parameters, and probing stellar atmospheres, circumstellar disks, elongation of rapidly…

Instrumentation and Methods for Astrophysics · Physics 2020-07-21 A. U. Abeysekara , W. Benbow , A. Brill , J. H. Buckley , J. L. Christiansen , A. J. Chromey , M. K. Daniel , J. Davis , A. Falcone , Q. Feng , J. P. Finley , L. Fortson , A. Furniss , A. Gent , C. Giuri , O. Gueta , D. Hanna , T. Hassan , O. Hervet , J. Holder , G. Hughes , T. B. Humensky , P. Kaaret , M. Kertzman , D. Kieda , F. Krennrich , S. Kumar , T. LeBohec , T. T. Y. Lin , M. Lundy , G. Maier , N. Matthews , P. Moriarty , R. Mukherjee M. Nievas-Rosillo , S. O'Brien , R. A. Ong , A. N. Otte , K. Pfrang , M. Pohl , R. R. Prado , E. Pueschel , J. Quinn , K. Ragan , P. T. Reynolds , D. Ribeiro , G. T. Richards , E. Roache , J. L. Ryan , M. Santander , G. H. Sembroski , S. P. Wakely , A. Weinstein , P. Wilcox , D. A. Williams , T. J Williamson

Towards optical intensity interferometry for high angular resolution stellar astrophysics

Most neighboring stars are still detected as point sources and are beyond the angular resolution reach of current observatories. Methods to improve our understanding of stars at high angular resolution are investigated. Air Cherenkov…

Instrumentation and Methods for Astrophysics · Physics 2012-09-07 Paul D. Nunez

Highlights from the VERITAS Blazar Program

VERITAS is an array of four 12-m imaging Cherenkov telescopes, sensitive to gamma rays in the energy range from 85 GeV to 30 TeV. VERITAS dedicates roughly 40% of its total observing time to blazars. We present recent highlights from the…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Jon Dumm

Advances in Optical / Infrared Interferometry

After decades of experimental projects and fast-paced technical advances, optical / infrared (O/IR) interferometry has seen a revolution in the last years. The GRAVITY instrument at the VLTI with four 8 meter telescopes reaches thousand…

Instrumentation and Methods for Astrophysics · Physics 2023-03-02 Frank Eisenhauer , John D. Monnier , Oliver Pfuhl

Science Highlights from VERITAS

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is a ground-based array located at the Fred Lawrence Whipple Observatory in southern Arizona and is one of the world's most sensitive gamma-ray instruments at energies of…

High Energy Astrophysical Phenomena · Physics 2015-10-06 D. Staszak , A. U. Abeysekara , S. Archambault , A. Archer , A. Barnacka , W. Benbow , R. Bird , J. Biteau , M. Buchovecky , J. H. Buckley , V. Bugaev , K. Byrum , J. V Cardenzana , M. Cerruti , X. Chen , J. L. Christiansen , L. Ciupik , E. Collins-Hughes , M. P. Connolly , P. Coppi , W. Cui , V. V. Dwarkadas , J. D. Eisch , M. Errando , A. Falcone , Q. Feng , M. Fernandez Alonso , J. P. Finley , H. Fleischhack , A. Flinders , P. Fortin , L. Fortson , A. Furniss , G. H. Gillanders , S. Griffin , S. T. Griffiths , G. Gyuk , M. Hütten , D. Hanna , J. Holder , T. B. Humensky , C. A. Johnson , P. Kaaret , P. Kar , M. Kertzman , Y. Khassen , D. Kieda , M. Krause , F. Krennrich , S. Kumar , M. J. Lang , G. Maier , S. McArthur , A. McCann , K. Meagher , P. Moriarty , R. Mukherjee , T. Nguyen , D. Nieto , A. O'Faoláin de Bhróithe , R. A. Ong , A. N. Otte , D. Pandel , N. Park , V. Pelassa , J. S. Perkins , M. Pohl , A. Popkow , E. Pueschel , J. Quinn , K. Ragan , P. T. Reynolds , G. T. Richards , E. Roache , A. C. Rovero , M. Santander , S. Schlenstedt , G. H. Sembroski , K. Shahinyan , A. W. Smith , I. Telezhinsky , J. V. Tucci , J. Tyler , V. V. Vassiliev , S. Vincent , S. P. Wakely , O. M. Weiner , A. Weinstein , A. Wilhelm , 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

Comparing Different Approaches for Stellar Intensity Interferometry

Stellar intensity interferometers correlate photons within their coherence time and could overcome the baseline limitations of existing amplitude interferometers. Intensity interferometers do not rely on phase coherence of the optical…

Instrumentation and Methods for Astrophysics · Physics 2022-02-24 Sebastian Karl , Andreas Zmija , Stefan Richter , Naomi Vogel , Dmitry Malyshev , Adrian Zink , Thilo Michel , Gisela Anton , Joachim von Zanthier , Stefan Funk

The VERITAS Upgraded Telescope-Level Trigger Systems: Technical Details and Performance Characterization

VERITAS is an array of imaging atmospheric Cherenkov telescopes sensitive to gamma rays in the energy range between 85 GeV and 30 TeV. The instrument underwent an upgrade of the camera triggers in November 2011. The new systems use 400 MHz…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Benjamin Zitzer

Astro2020 White Paper State of the Profession: Intensity Interferometry

Recent advances in telescope design, photodetector efficiency, and high-speed electronic data recording and synchronization have created the observational capability to achieve unprecedented angular resolution for several thousand bright…

Instrumentation and Methods for Astrophysics · Physics 2019-08-01 David B. Kieda , Gisela Anton , Anastasia Barbano , Wystan Benbow , Colin Carlile , Michael Daniel , Dainis Dravins , Sean Griffin , Tarek Hassan , Jamie Holder , Stephan LeBohec , Nolan Matthews , Theresa Montaruli , Nicolas Produit , Josh Reynolds , Roland Walter , Luca Zampieri

Stellar intensity interferometry of Vega in photon counting mode

Stellar Intensity Interferometry is a technique based on the measurement of the second order spatial correlation of the light emitted from a star. The physical information provided by these measurements is the angular size and structure of…

Instrumentation and Methods for Astrophysics · Physics 2021-07-13 Luca Zampieri , Giampiero Naletto , Aleksandr Burtovoi , Michele Fiori , Cesare Barbieri

The VERITAS Extragalactic non-Blazar Program

VERITAS is an array of four 12-m diameter imaging atmospheric-Cherenkov telescopes located in southern Arizona. Its aim is to study the very high energy (VHE: E > 100 GeV) gamma-ray emission from astrophysical objects. In addition to the…

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

DESHIMA 2.0: development of an integrated superconducting spectrometer for science-grade astronomical observations

Integrated superconducting spectrometer (ISS) technology will enable ultra-wideband, integral-field spectroscopy for (sub)millimeter-wave astronomy, in particular, for uncovering the dust-obscured cosmic star formation and galaxy evolution…

Instrumentation and Methods for Astrophysics · Physics 2022-11-23 Akio Taniguchi , Tom J. L. C. Bakx , Jochem J. A. Baselmans , Robert Huiting , Kenichi Karatsu , Nuria Llombart , Matus Rybak , Tatsuya Takekoshi , Yoichi Tamura , Hiroki Akamatsu , Stefanie Brackenhoff , Juan Bueno , Bruno T. Buijtendorp , Shahab Dabironezare , Anne-Kee Doing , Yasunori Fujii , Kazuyuki Fujita , Matthijs Gouwerok , Sebastian Hähnle , Tsuyoshi Ishida , Shun Ishii , Ryohei Kawabe , Tetsu Kitayama , Kotaro Kohno , Akira Kouchi , Jun Maekawa , Keiichi Matsuda , Vignesh Murugesan , Shunichi Nakatsubo , Tai Oshima , Alejandro Pascual Laguna , David J. Thoen , Paul P. van der Werf , Stephen J. C. Yates , Akira Endo

Simultaneous Two Colour Intensity Interferometry with H.E.S.S

In recent years, intensity interferometry has been successfully applied to the Imaging Atmospheric Cherenkov Telescopes H.E.S.S. , MAGIC, and VERITAS. All three telescope systems have proven the feasibility and capability of this method.…

Instrumentation and Methods for Astrophysics · Physics 2024-11-26 Naomi Vogel , Andreas Zmija , Frederik Wohlleben , Gisela Anton , Alison Mitchell , Adrian Zink , Stefan Funk

First Light for GRAVITY: Phase Referencing Optical Interferometry for the Very Large Telescope Interferometer

GRAVITY is a new instrument to coherently combine the light of the European Southern Observatory Very Large Telescope Interferometer to form a telescope with an equivalent 130 m diameter angular resolution and a collecting area of 200…

Instrumentation and Methods for Astrophysics · Physics 2017-06-21 GRAVITY Collaboration , R. Abuter , M. Accardo , A. Amorim , N. Anugu , G. Ávila , N. Azouaoui , M. Benisty , J. P. Berger , N. Blind , H. Bonnet , P. Bourget , W. Brandner , R. Brast , A. Buron , L. Burtscher , F. Cassaing , F. Chapron , É. Choquet , Y. Clénet , C. Collin , V. Coudé du Foresto , W. de Wit , P. T. de Zeeuw , C. Deen , F. Delplancke-Ströbele , R. Dembet , F. Derie , J. Dexter , G. Duvert , M. Ebert , A. Eckart , F. Eisenhauer , M. Esselborn , P. Fédou , G. Finger , P. Garcia , C. E. Garcia Dabo , R. Garcia Lopez , E. Gendron , R. Genzel , S. Gillessen , F. Gonte , P. Gordo , M. Grould , U. Grözinger , S. Guieu , P. Haguenauer , O. Hans , X. Haubois , M. Haug , F. Haussmann , Th. Henning , S. Hippler , M. Horrobin , A. Huber , Z. Hubert , N. Hubin , C. A. Hummel , G. Jakob , A. Janssen , L. Jochum , L. Jocou , A. Kaufer , S. Kellner , L. Kern , P. Kervella , M. Kiekebusch , R. Klein , Y. Kok , J. Kolb , M. Kulas , S. Lacour , V. Lapeyrère , B. Lazareff , J. -B. Le Bouquin , P. Lèna , R. Lenzen , S. Lévêque , M. Lippa , Y. Magnard , L. Mehrgan , M. Mellein , A. Mérand , J. Moreno-Ventas , T. Moulin , E. Müller , F. Müller , U. Neumann , S. Oberti , T. Ott , L. Pallanca , J. Panduro , L. Pasquini , T. Paumard , I. Percheron , K. Perraut , G. Perrin , A. Pflüger , O. Pfuhl , T. Phan Duc , P. M. Plewa , D. Popovic , S. Rabien , A. Ramírez , J. Ramos , C. Rau , M. Riquelme , R. -R. Rohloff , G. Rousset , J. Sanchez-Bermudez , S. Scheithauer , M. Schöller , N. Schuhler , J. Spyromilio , C. Straubmeier , E. Sturm , M. Suarez , K. R. W. Tristram , N. Ventura , F. Vincent , I. Waisberg , I. Wank , J. Weber , E. Wieprecht , M. Wiest , E. Wiezorrek , M. Wittkowski , J. Woillez , B. Wolff , S. Yazici , D. Ziegler , G. Zins

VERITAS: the Very Energetic Radiation Imaging Telescope Array System

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) represents an important step forward in the study of extreme astrophysical processes in the universe. It combines the power of the atmospheric Cherenkov imaging technique…

Astrophysics · Physics 2008-11-26 T. C. Weekes

The VERITAS Extragalactic Science Program

VERITAS is an array of four 12-m diameter imaging atmospheric-Cherenkov telescopes located in southern Arizona. Its aim is to study the very high energy (VHE: E > 100 GeV) gamma-ray emission from astrophysical objects. The study of Active…

High Energy Astrophysical Phenomena · Physics 2011-11-02 Nicola Galante

VSI: the VLTI spectro-imager

The VLTI Spectro Imager (VSI) was proposed as a second-generation instrument of the Very Large Telescope Interferometer providing the ESO community with spectrally-resolved, near-infrared images at angular resolutions down to 1.1…

Astrophysics · Physics 2009-11-13 F. Malbet , D. Buscher , G. Weigelt , P. Garcia , M. Gai , D. Lorenzetti , J. Surdej , J. Hron , R. Neuhaeuser , P. Kern , L. Jocou , J. -P. Berger , O. Absil , U. Beckmann , L. Corcione , G. Duvert , M. Filho , P. Labeye , E. Le Coarer , G. Li Causi , J. Lima , K. Perraut , E. Tatulli , E. Thiebaut , J. Young , G. Zins , A. Amorim , B. Aringer , T. Beckert , M. Benisty , X. Bonfils , A. Cabral , A. Chelli , O. Chesneau , A. Chiavassa , R. Corradi , M. de Becker , A. Delboulbe , G. Duchene , T. Forveille , C. Haniff , E. Herwats , K. -H. Hofmann , J. -B. Le Bouquin , S. Ligori , D. Loreggia , A. Marconi , A. Moitinho , B. Nisini , P. -O. Petrucci , J. Rebordao , R. Speziali , L. Testi , F. Vitali

The GRAVITY Coud\'e Infrared Adaptive Optics (CIAO) system for the VLT Interferometer

GRAVITY is a second generation instrument for the VLT Interferometer, designed to enhance the near-infrared astrometric and spectro-imaging capabilities of VLTI. Combining beams from four telescopes, GRAVITY will provide an astrometric…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 Sarah Kendrew , Stefan Hippler , Wolfgang Brandner , Yann Clénet , Casey Deen , Eric Gendron , Armin Huber , Ralf Klein , Werner Laun , Rainer Lenzen , Vianak Naranjo , Udo Neumann , José Ramos , Ralf-Rainer Rohloff , Pengqian Yang , Frank Eisenhauer , Enrico Fedrigo , Marcos Suarez-Valles , Antonio Amorim , Karine Perraut , Guy Perrin , Christian Straubmeier