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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 13413naa a2201573 4500 | |
| 001 | oai:research.chalmers.se:d0ac3261-4299-4250-b5f0-395e59f495c9 | |
| 003 | SwePub | |
| 008 | 190429s2019 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://doi.org/10.3847/2041-8213/ab0c572 DOI |
| 024 | 7 | a https://research.chalmers.se/publication/5098612 URI |
| 024 | 7 | a https://research.chalmers.se/publication/5099102 URI |
| 040 | a (SwePub)cth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Akiyama, Kazunoriu National Astronomical Observatory of Japan,Massachusetts Institute of Technology (MIT),National Radio Astronomy Observatory,Harvard University4 aut |
| 245 | 1 0 | a First M87 Event Horizon Telescope Results. III. Data Processing and Calibration |
| 264 | c 2019-04-10 | |
| 264 | 1 | b American Astronomical Society,c 2019 |
| 338 | a electronic2 rdacarrier | |
| 520 | a We present the calibration and reduction of Event Horizon Telescope (EHT) 1.3 mm radio wavelength observations of the supermassive black hole candidate at the center of the radio galaxy M87 and the quasar 3C 279, taken during the 2017 April 5-11 observing campaign. These global very long baseline interferometric observations include for the first time the highly sensitive Atacama Large Millimeter/submillimeter Array (ALMA); reaching an angular resolution of 25 μas, with characteristic sensitivity limits of ∼1 mJy on baselines to ALMA and ∼10 mJy on other baselines. The observations present challenges for existing data processing tools, arising from the rapid atmospheric phase fluctuations, wide recording bandwidth, and highly heterogeneous array. In response, we developed three independent pipelines for phase calibration and fringe detection, each tailored to the specific needs of the EHT. The final data products include calibrated total intensity amplitude and phase information. They are validated through a series of quality assurance tests that show consistency across pipelines and set limits on baseline systematic errors of 2% in amplitude and 1° in phase. The M87 data reveal the presence of two nulls in correlated flux density at ∼3.4 and ∼8.3 Gλ and temporal evolution in closure quantities, indicating intrinsic variability of compact structure on a timescale of days, or several light-crossing times for a few billion solar-mass black hole. These measurements provide the first opportunity to image horizon-scale structure in M87. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a techniques: interferometric | |
| 653 | a black hole physics | |
| 653 | a galaxies: individual (M87, 3C279) | |
| 653 | a galaxies: jets | |
| 653 | a techniques: high angular resolution | |
| 700 | 1 | a Alberdi, Antxonu Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)4 aut |
| 700 | 1 | a Alef, Walteru Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Asada, K.u National Taiwan University4 aut |
| 700 | 1 | a 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 |
| 700 | 1 | a 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 |
| 700 | 1 | a Ball, Davidu University of Arizona4 aut |
| 700 | 1 | a Baloković, Mislavu Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut |
| 700 | 1 | a Barrett, Johnu Massachusetts Institute of Technology (MIT)4 aut |
| 700 | 1 | a Bintley, Danu East Asian Observatory4 aut |
| 700 | 1 | a Blackburn, Lindyu Harvard University,Harvard-Smithsonian Center for Astrophysics4 aut |
| 700 | 1 | a Boland, W.4 aut |
| 700 | 1 | a Bouman, K. L.u Harvard University,Harvard-Smithsonian Center for Astrophysics,California Institute of Technology (Caltech)4 aut |
| 700 | 1 | a Bower, G. C.u Academia Sinica Taiwan4 aut |
| 700 | 1 | a Bremer, M.u Institut de Radioastronomie Millimétrique (IRAM)4 aut |
| 700 | 1 | a Brinkerink, C. D.u Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a Brissenden, Rogeru Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut |
| 700 | 1 | a Britzen, Silkeu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Broderick, Avery E.u Perimeter Institute for Theoretical Physics,University of Waterloo4 aut |
| 700 | 1 | a Broguière, D.u Institut de Radioastronomie Millimétrique (IRAM)4 aut |
| 700 | 1 | a Bronzwaer, Thomasu Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a Byun, Do Youngu University of Science and Technology (UST),Korea Astronomy and Space Science Institute4 aut |
| 700 | 1 | a Carlstrom, J. E.u University of Chicago4 aut |
| 700 | 1 | a Chael, A.u Harvard University,Harvard-Smithsonian Center for Astrophysics4 aut |
| 700 | 1 | a Chan, Chi Kwanu University of Arizona4 aut |
| 700 | 1 | a Chatterjee, S.u Cornell University4 aut |
| 700 | 1 | a Chatterjee, Koushiku Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a Chen, Ming Tangu Academia Sinica Taiwan4 aut |
| 700 | 1 | a Chen, Yongjunu Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences,Chinese Academy of Sciences4 aut |
| 700 | 1 | a Cho, I.u University of Science and Technology (UST),Korea Astronomy and Space Science Institute4 aut |
| 700 | 1 | a Christian, Pierreu Harvard-Smithsonian Center for Astrophysics,University of Arizona4 aut |
| 700 | 1 | a Conway, John,d 1963u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)jconway |
| 700 | 1 | a Cordes, James M.u Cornell University4 aut |
| 700 | 1 | a Crew, G.u Massachusetts Institute of Technology (MIT)4 aut |
| 700 | 1 | a Cui, Yuzhuu National Astronomical Observatory of Japan,The Graduate University for Advanced Studies (SOKENDAI)4 aut |
| 700 | 1 | a Davelaar, Jordyu Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a De Laurentis, Mariafeliciau Universita Degli Studi Di Napoli Federico Ii,University of Naples Federico II,Istituto Nazionale di Fisica Nucleare,National Institute for Nuclear Physics,Johann Wolfgang Goethe Universität Frankfurt am Main,Goethe University Frankfurt4 aut |
| 700 | 1 | a Deane, R. P.u Universiteit van Pretoria,University of Pretoria,Rhodes University4 aut |
| 700 | 1 | a Dempsey, Jessicau East Asian Observatory4 aut |
| 700 | 1 | a Desvignes, Gregoryu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Dexter, Jasonu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Doeleman, S.u Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut |
| 700 | 1 | a 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 |
| 700 | 1 | a Falcke, H.D.u Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a Fish, V.u Massachusetts Institute of Technology (MIT)4 aut |
| 700 | 1 | a Fomalont, E.u National Radio Astronomy Observatory4 aut |
| 700 | 1 | a Fraga-Encinas, R.u Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a Friberg, P.u East Asian Observatory4 aut |
| 700 | 1 | a Fromm, Christian M.u Johann Wolfgang Goethe Universität Frankfurt am Main,Goethe University Frankfurt4 aut |
| 700 | 1 | a Gomez, J. L.u Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)4 aut |
| 700 | 1 | a Galison, Peteru Harvard University4 aut |
| 700 | 1 | a Gammie, Charles F.u University of Illinois4 aut |
| 700 | 1 | a Garcia, Robertou Institut de Radioastronomie Millimétrique (IRAM)4 aut |
| 700 | 1 | a Gentaz, Olivieru Institut de Radioastronomie Millimétrique (IRAM)4 aut |
| 700 | 1 | a Georgiev, Borisu University of Waterloo4 aut |
| 700 | 1 | a Goddi, C.u Radboud Universiteit,Radboud University,Universiteit Leiden (UL),Leiden University (UL)4 aut |
| 700 | 1 | a Gold, R.u Johann Wolfgang Goethe Universität Frankfurt am Main,Goethe University Frankfurt4 aut |
| 700 | 1 | a Gu, Minfengu Chinese Academy of Sciences,Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences4 aut |
| 700 | 1 | a Gurwell, M.u Harvard-Smithsonian Center for Astrophysics4 aut |
| 700 | 1 | a Hada, K.u The Graduate University for Advanced Studies (SOKENDAI),National Astronomical Observatory of Japan4 aut |
| 700 | 1 | a Hecht, Michael H.u Massachusetts Institute of Technology (MIT)4 aut |
| 700 | 1 | a Hesper, R.u Rijksuniversiteit Groningen,University of Groningen4 aut |
| 700 | 1 | a Ho, Luis C.u Beijing University of Technology4 aut |
| 700 | 1 | a Ho, Paulu National Taiwan University4 aut |
| 700 | 1 | a Honma, Marekiu The Graduate University for Advanced Studies (SOKENDAI),National Astronomical Observatory of Japan4 aut |
| 700 | 1 | a Huang, Chih Wei L.u National Taiwan University4 aut |
| 700 | 1 | a Huang, Leiu Chinese Academy of Sciences,Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences4 aut |
| 700 | 1 | a Hughes, D.u Instituto Nacional de Astrofísica, Óptica y Electrońica (INAOE),National Institute of Astrophysics, Optics and Electronics (INAOE)4 aut |
| 700 | 1 | a 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 |
| 700 | 1 | a Inoue, Makotou National Taiwan University4 aut |
| 700 | 1 | a Issaoun, S.u Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a James, David J.u Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut |
| 700 | 1 | a Jannuzi, Buell T.u University of Arizona4 aut |
| 700 | 1 | a Janßen, M.u Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a Jeter, Brittonu University of Waterloo4 aut |
| 700 | 1 | a Jiang, Wuu Shanghai Astronomical Observatory. Chinese Academy of Sciences,Shanghai Astronomical Observatory Chinese Academy of Sciences4 aut |
| 700 | 1 | a Johnson, Michael D.u Harvard-Smithsonian Center for Astrophysics,Harvard University4 aut |
| 700 | 1 | a Jorstad, S.G.u Saint Petersburg State University - Spsu,Boston University4 aut |
| 700 | 1 | a Jung, Taehyunu University of Science and Technology (UST),Korea Astronomy and Space Science Institute4 aut |
| 700 | 1 | a Karami, Mansouru University of Waterloo,Perimeter Institute for Theoretical Physics4 aut |
| 700 | 1 | a Karuppusamy, R.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Kawashima, Tomohisau National Astronomical Observatory of Japan4 aut |
| 700 | 1 | a Keating, G.u Harvard-Smithsonian Center for Astrophysics4 aut |
| 700 | 1 | a Kettenis, M. M.u Joint Institute for VLBI in Europe (JIVE)4 aut |
| 700 | 1 | a Kim, Jae Youngu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Kim, Junhanu University of Arizona4 aut |
| 700 | 1 | a Kim, Jongsoou Korea Astronomy and Space Science Institute4 aut |
| 700 | 1 | a Kino, M.u National Astronomical Observatory of Japan,Kogakuin University of Technology and Engineering4 aut |
| 700 | 1 | a Koay, Jun Yiu National Taiwan University4 aut |
| 700 | 1 | a Koch, Patrick M.u National Taiwan University4 aut |
| 700 | 1 | a Koyama, Shokou National Taiwan University4 aut |
| 700 | 1 | a Kramer, M.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut |
| 700 | 1 | a Kramer, C.u Institut de Radioastronomie Millimétrique (IRAM)4 aut |
| 700 | 1 | a 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 |
| 700 | 1 | a Kuo, Cheng Yuu National Sun Yat-Sen University4 aut |
| 700 | 1 | a Lauer, Tod R.4 aut |
| 700 | 1 | a Lee, Sang Sungu Korea Astronomy and Space Science Institute4 aut |
| 700 | 1 | a Li, Yan Rongu Chinese Academy of Sciences4 aut |
| 700 | 1 | a Li, Zhiyuanu Nanjing University4 aut |
| 710 | 2 | a National Astronomical Observatory of Japanb Massachusetts Institute of Technology (MIT)4 org |
| 773 | 0 | t Astrophysical Journal Lettersd : American Astronomical Societyg 875:1q 875:1x 2041-8213x 2041-8205 |
| 856 | 4 | u https://research.chalmers.se/publication/509910/file/509910_Fulltext.pdfx primaryx freey FULLTEXT |
| 856 | 4 | u https://doi.org/10.3847/2041-8213/ab0c57 |
| 856 | 4 8 | u https://doi.org/10.3847/2041-8213/ab0c57 |
| 856 | 4 8 | u https://research.chalmers.se/publication/509861 |
| 856 | 4 8 | u https://research.chalmers.se/publication/509910 |
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