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FältnamnIndikatorerMetadata
00013626naa a2201585 4500
001oai:research.chalmers.se:e61fccf0-ea43-4f38-943a-4285b668eacb
003SwePub
008190501s2019 | |||||||||||000 ||eng|
024a https://research.chalmers.se/publication/5099622 URI
024a https://doi.org/10.3847/2041-8213/ab0c962 DOI
040 a (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
100a Akiyama, Kazunoriu Harvard University,National Radio Astronomy Observatory,National Astronomical Observatory of Japan,Massachusetts Institute of Technology (MIT)4 aut
2451 0a First M87 Event Horizon Telescope Results. II. Array and Instrumentation
264 c 2019-04-10
264 1b American Astronomical Society,c 2019
338 a electronic2 rdacarrier
520 a The Event Horizon Telescope (EHT) is a very long baseline interferometry (VLBI) array that comprises millimeter- and submillimeter-wavelength telescopes separated by distances comparable to the diameter of the Earth. At a nominal operating wavelength of ∼1.3 mm, EHT angular resolution (λ/D) is ∼25 μas, which is sufficient to resolve nearby supermassive black hole candidates on spatial and temporal scales that correspond to their event horizons. With this capability, the EHT scientific goals are to probe general relativistic effects in the strong-field regime and to study accretion and relativistic jet formation near the black hole boundary. In this Letter we describe the system design of the EHT, detail the technology and instrumentation that enable observations, and provide measures of its performance. Meeting the EHT science objectives has required several key developments that have facilitated the robust extension of the VLBI technique to EHT observing wavelengths and the production of instrumentation that can be deployed on a heterogeneous array of existing telescopes and facilities. To meet sensitivity requirements, high-bandwidth digital systems were developed that process data at rates of 64 gigabit s -1 , exceeding those of currently operating cm-wavelength VLBI arrays by more than an order of magnitude. Associated improvements include the development of phasing systems at array facilities, new receiver installation at several sites, and the deployment of hydrogen maser frequency standards to ensure coherent data capture across the array. These efforts led to the coordination and execution of the first Global EHT observations in 2017 April, and to event-horizon-scale imaging of the supermassive black hole candidate in M87.
650 7a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Rymd- och flygteknik0 (SwePub)203022 hsv//swe
650 7a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Aerospace Engineering0 (SwePub)203022 hsv//eng
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
653 a techniques: high angular resolution
653 a instrumentation: interferometers
653 a gravitational lensing: strong
653 a galaxies: individual (M87)
653 a Galaxy: center
653 a black hole physics
700a Alberdi, Antxonu Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)4 aut
700a Alef, Walteru Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Asada, K.u National Taiwan University4 aut
700a Azulay, R.u Universitat de Valencia,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Baczko, A. K.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Ball, Davidu University of Arizona4 aut
700a Baloković, Mislavu Harvard University,Harvard-Smithsonian Center for Astrophysics4 aut
700a Barrett, Johnu Massachusetts Institute of Technology (MIT)4 aut
700a Bintley, Danu East Asian Observatory4 aut
700a Blackburn, Lindyu Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut
700a Boland, W.4 aut
700a Bouman, K. L.u Harvard-Smithsonian Center for Astrophysics,California Institute of Technology (Caltech),Harvard University4 aut
700a Bower, G. C.u Academia Sinica Taiwan4 aut
700a Bremer, M.u Institut de Radioastronomie Millimétrique (IRAM)4 aut
700a Brinkerink, C. D.u Radboud Universiteit,Radboud University4 aut
700a Brissenden, Rogeru Harvard University,Harvard-Smithsonian Center for Astrophysics4 aut
700a Britzen, Silkeu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Broderick, Avery E.u Perimeter Institute for Theoretical Physics,University of Waterloo4 aut
700a Broguière, D.u Institut de Radioastronomie Millimétrique (IRAM)4 aut
700a Bronzwaer, Thomasu Radboud Universiteit,Radboud University4 aut
700a Byun, Do Youngu University of Science and Technology (UST),Korea Astronomy and Space Science Institute4 aut
700a Carlstrom, J. E.u University of Chicago4 aut
700a Chael, A.u Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut
700a Chan, Chi Kwanu University of Arizona4 aut
700a Chatterjee, S.u Cornell University4 aut
700a Chatterjee, Koushiku Universiteit Van Amsterdam,University of Amsterdam4 aut
700a Chen, Ming Tangu Academia Sinica Taiwan4 aut
700a Chen, Yongjunu Chinese Academy of Sciences,Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences4 aut
700a Cho, I.u Korea Astronomy and Space Science Institute,University of Science and Technology (UST)4 aut
700a Christian, Pierreu University of Arizona,Harvard-Smithsonian Center for Astrophysics4 aut
700a Conway, John,d 1963u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)jconway
700a Cordes, James M.u Cornell University4 aut
700a Crew, G.u Massachusetts Institute of Technology (MIT)4 aut
700a Cui, Yuzhuu The Graduate University for Advanced Studies (SOKENDAI),National Astronomical Observatory of Japan4 aut
700a Davelaar, Jordyu Radboud Universiteit,Radboud University4 aut
700a De Laurentis, Mariafeliciau Johann Wolfgang Goethe Universität Frankfurt am Main,Goethe University Frankfurt,Universita Degli Studi Di Napoli Federico Ii,University of Naples Federico II4 aut
700a Deane, R. P.u Universiteit van Pretoria,University of Pretoria,Rhodes University4 aut
700a Dempsey, Jessicau East Asian Observatory4 aut
700a Desvignes, Gregoryu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Dexter, Jasonu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Doeleman, S.u Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut
700a Eatough, Ralph P.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Falcke, H.D.u Radboud Universiteit,Radboud University4 aut
700a Fish, V.u Massachusetts Institute of Technology (MIT)4 aut
700a Fomalont, Edu National Radio Astronomy Observatory4 aut
700a Fraga-Encinas, R.u Radboud Universiteit,Radboud University4 aut
700a Friberg, P.u East Asian Observatory4 aut
700a Fromm, Christian M.u Johann Wolfgang Goethe Universität Frankfurt am Main,Goethe University Frankfurt4 aut
700a Gomez, J. L.u Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)4 aut
700a Galison, Peteru Harvard University4 aut
700a Gammie, Charles F.u University of Illinois4 aut
700a Garcia, Robertou Institut de Radioastronomie Millimétrique (IRAM)4 aut
700a Gentaz, Olivieru Institut de Radioastronomie Millimétrique (IRAM)4 aut
700a Georgiev, Borisu University of Waterloo4 aut
700a Goddi, C.u Radboud Universiteit,Radboud University,Universiteit Leiden (UL),Leiden University (UL)4 aut
700a Gold, R.u Johann Wolfgang Goethe Universität Frankfurt am Main,Goethe University Frankfurt4 aut
700a Gu, Minfengu Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences,Chinese Academy of Sciences4 aut
700a Gurwell, M.u Harvard-Smithsonian Center for Astrophysics4 aut
700a Hada, K.u National Astronomical Observatory of Japan,The Graduate University for Advanced Studies (SOKENDAI)4 aut
700a Hecht, Michael H.u Massachusetts Institute of Technology (MIT)4 aut
700a Hesper, R.u Rijksuniversiteit Groningen,University of Groningen4 aut
700a Ho, Luis C.u Beijing University of Technology4 aut
700a Ho, P. T. P.u National Taiwan University4 aut
700a Honma, Marekiu National Astronomical Observatory of Japan,The Graduate University for Advanced Studies (SOKENDAI)4 aut
700a Huang, Chih Wei L.u National Taiwan University4 aut
700a Huang, Leiu Chinese Academy of Sciences,Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences4 aut
700a Hughes, D.u Instituto Nacional de Astrofísica, Óptica y Electrońica (INAOE),National Institute of Astrophysics, Optics and Electronics (INAOE)4 aut
700a Ikeda, Shirou University of Tokyo, Japan,National Astronomical Observatory of Japan,The Institute of Statistical Mathematics (ISM),The Graduate University for Advanced Studies (SOKENDAI)4 aut
700a Inoue, Makotou National Taiwan University4 aut
700a Issaoun, S.u Radboud Universiteit,Radboud University4 aut
700a James, David J.u Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut
700a Jannuzi, Buell T.u University of Arizona4 aut
700a Janßen, M.u Radboud Universiteit,Radboud University4 aut
700a Jeter, Brittonu University of Waterloo4 aut
700a Jiang, Wuu Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences4 aut
700a Johnson, Michael D.u Harvard University,Harvard-Smithsonian Center for Astrophysics4 aut
700a Jorstad, S.G.u Saint Petersburg State University - Spsu,Boston University4 aut
700a Jung, Taehyunu Korea Astronomy and Space Science Institute,University of Science and Technology (UST)4 aut
700a Karami, Mansouru University of Waterloo,Perimeter Institute for Theoretical Physics4 aut
700a Karuppusamy, R.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Kawashima, Tomohisau National Astronomical Observatory of Japan4 aut
700a Keating, G.u Harvard-Smithsonian Center for Astrophysics4 aut
700a Kettenis, M. M.u Joint Institute for VLBI in Europe (JIVE)4 aut
700a Kim, Jae Youngu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Kim, Junhanu University of Arizona4 aut
700a Kim, Jongsoou Korea Astronomy and Space Science Institute4 aut
700a Kino, M.u Kogakuin University of Technology and Engineering,National Astronomical Observatory of Japan4 aut
700a Koay, Jun Yiu National Taiwan University4 aut
700a Koch, Patrick M.u National Taiwan University4 aut
700a Koyama, Shokou National Taiwan University4 aut
700a Kramer, M.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Kramer, C.u Institut de Radioastronomie Millimétrique (IRAM)4 aut
700a Krichbaum, T.P.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700a Kuo, Cheng Yuu National Sun Yat-Sen University4 aut
700a Lauer, Tod R.4 aut
700a Lee, Sang Sungu Korea Astronomy and Space Science Institute4 aut
700a Li, Yan Rongu Chinese Academy of Sciences4 aut
700a Li, Zhiyuanu Nanjing University4 aut
710a Harvard Universityb National Radio Astronomy Observatory4 org
773t Astrophysical Journal Lettersd : American Astronomical Societyg 875:1q 875:1x 2041-8213x 2041-8205
856u https://research.chalmers.se/publication/509962/file/509962_Fulltext.pdfx primaryx freey FULLTEXT
856u https://doi.org/10.3847/2041-8213/ab0c96
8564 8u https://research.chalmers.se/publication/509962
8564 8u https://doi.org/10.3847/2041-8213/ab0c96

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