中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 上海天文台
  3. 中国科学院上海天文台
First M87 Event Horizon Telescope Results. III. Data Processing and Calibration

文献类型：期刊论文

作者Akiyama, Kazunori100,101,102,103; Alberdi, Antxon99; Alef, Walter98; Asada, Keiichi97; Azulay, Rebecca95,96,98; Baczko, Anne-Kathrin98; Ball, David93,94; Balokovic, Mislav92,100; Barrett, John102; Bintley, Dan91
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2019-04-10
卷号875期号:1页码:32
ISSN号2041-8205
关键词black hole physics galaxies: individual (M87, 3C279) galaxies: jets techniques: high angular resolution techniques: interferometric
DOI10.3847/2041-8213/ab0c57
英文摘要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 mu as, with characteristic sensitivity limits of similar to 1 mJy on baselines to ALMA and similar to 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 degrees in phase. The M87 data reveal the presence of two nulls in correlated flux density at similar to 3.4 and similar to 8.3 G lambda 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.
资助项目Academy of Finland[274477] ; Academy of Finland[284495] ; Academy of Finland[312496] ; European Commission Framework Programme Horizon 2020 Research and Innovation action[731016] ; Black Hole Initiative at Harvard University through John Templeton Foundation[60477] ; Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile)[PIA ACT172033] ; Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile)[Fondecyt 1171506] ; Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile)[BASAL AFB-170002] ; Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT, Chile)[ALMA-conicyt 31140007] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[104497] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[275201] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[279006] ; Consejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)[281692] ; Direccion General de Asuntos del Personal Academico-Universidad Nacional Autonoma de Mexico (DGAPA-UNAM)[IN112417] ; European Research Council Synergy Grant BlackHoleCam: Imaging the Event Horizon of Black Holes[610058] ; Generalitat Valenciana postdoctoral grant[APOSTD/2018/177] ; Gordon and Betty Moore Foundation[GBMF 947] ; Gordon and Betty Moore Foundation[GBMF-3561] ; Gordon and Betty Moore Foundation[GBMF-5278] ; Japanese Government (Monbukagakusho: MEXT) Scholarship ; Japan Society for the Promotion of Science (JSPS)[JP17J08829] ; JSPS Overseas Research Fellowships ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDJ-SSW-SLH057] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDJ-SSW-SYS008] ; Leverhulme Trust Early Career Research Fellowship ; MEXT/JSPS KAKENHI[18KK0090] ; MEXT/JSPS KAKENHI[JP18K13594] ; MEXT/JSPS KAKENHI[JP18K03656] ; MEXT/JSPS KAKENHI[JP18H03721] ; MEXT/JSPS KAKENHI[18K03709] ; MEXT/JSPS KAKENHI[18H01245] ; MEXT/JSPS KAKENHI[25120007] ; MIT International Science and Technology Initiatives (MISTI) Funds ; Ministry of Science and Technology (MOST) of Taiwan[105-2112-M-001-025-MY3] ; Ministry of Science and Technology (MOST) of Taiwan[106-2112-M-001-011] ; Ministry of Science and Technology (MOST) of Taiwan[106-2119-M-001-027] ; Ministry of Science and Technology (MOST) of Taiwan[107-2119-M-001-017] ; Ministry of Science and Technology (MOST) of Taiwan[107-2119-M-001-020] ; Ministry of Science and Technology (MOST) of Taiwan[107-2119-M-110-005] ; National Aeronautics and Space Administration (NASA)[80NSSC17K0649] ; National Key Research and Development Program of China[2016YFA0400704] ; National Key Research and Development Program of China[2016YFA0 400702] ; National Science Foundation (NSF)[AST-0096454] ; National Science Foundation (NSF)[AST-0352953] ; National Science Foundation (NSF)[AST-0521233] ; National Science Foundation (NSF)[AST-0705062] ; National Science Foundation (NSF)[AST-0905844] ; National Science Foundation (NSF)[AST-0922984] ; National Science Foundation (NSF)[AST-1126433] ; National Science Foundation (NSF)[AST-1140030] ; National Science Foundation (NSF)[DGE-1144085] ; National Science Foundation (NSF)[AST-1207704] ; National Science Foundation (NSF)[AST-1207730] ; Natural Science Foundation of China[11573051] ; Natural Science Foundation of China[11633006] ; Natural Science Foundation of China[11650110427] ; Natural Science Foundation of China[10625314] ; Natural Science Foundation of China[11721303] ; Natural Science Foundation of China[11725312] ; Natural Science Foundation of China[11873028] ; Natural Science Foundation of China[11873073] ; Natural Science Foundation of China[U1531245] ; Natural Science Foundation of China[11473010] ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Research Foundation of Korea[2015-R1D1A1A01056807] ; National Research Foundation of Korea[NRF-2015H1A2A1033752] ; National Research Foundation of Korea[NRF-2015H1D3A1066561] ; Netherlands Organization for Scientific Research (NWO) VICI award[639.043.513] ; Spinoza Prize[SPI 78-409] ; Swedish Research Council[2017-00648] ; Government of Canada through the Department of Innovation, Science and Economic Development Canada ; Province of Ontario through the Ministry of Economic Development, Job Creation and Trade ; Russian Science Foundation[17-12-01029] ; Spanish Ministerio de Economia y Competitividad[AYA2015-63939-C2-1-P] ; Spanish Ministerio de Economia y Competitividad[AYA2016-80889-P] ; US Department of Energy (USDOE) through the Los Alamos National Laboratory[89233218CNA000001] ; Italian Ministero dell'Istruzione Universita e Ricerca through the grant Progetti Premiali 2012-iALMA[CUP C52I13000140001] ; ALMA North America Development Fund ; NSF[ACI-1548562] ; NSF[DBI-0735191] ; NSF[DBI-1265383] ; NSF[DBI-1743442] ; Smithsonian Institution ; Academia Sinica ; National Key R&D Program of China[2017YFA0402700] ; Science and Technologies Facility Council (UK) ; CNRS (Centre National de la Recherche Scientifique, France) ; MPG(Max-Planck-Gesellschaft, Germany) ; IGN (Instituto Geografico Nacional, Spain) ; State of Arizona ; NSF Physics Frontier Center award[PHY-0114422] ; Kavli Foundation ; National Science Foundation[PLR-1248097] ; NSF Physics Frontier Center[PHY-1125897] ; Jansky Fellowship program of the National Radio Astronomy Observatory (NRAO) ; South African Radio Astronomy Observatory (SARAO), which is a facility of the National Research Foundation (NRF), an agency of the Department of Science and Technology (DST) of South Africa ; State Agency for Research of the Spanish MCIU through the Center of Excellence Severo Ochoa award[SEV-2017-0709] ; European Union' s Horizon 2020 research and innovation programme[730562 RadioNet] ; GBMF[GBMF-947] ; Compute Ontario ; Calcul Quebec ; Compute Canada ; NSF ; CyVerse ; [Chandra TM6-17006X] ; [AST-1207752] ; [MRI-1228509] ; [OPP-1248097] ; [AST-1310896] ; [AST-1312651] ; [AST-1337663] ; [AST-1440254] ; [AST-1555365] ; [AST-1715061] ; [AST-1615796] ; [AST-1716327] ; [OISE-1743747] ; [AST-1816420] ; [AST-1614868]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000464210800003
源URL[http://119.78.226.72/handle/331011/30880]  
专题中国科学院上海天文台
通讯作者Akiyama, Kazunori
作者单位1.Syst & Technol Res, 600 West Cummings Pk, Woburn, MA 01801 USA
2.Univ Chicago, 5640 South Ellis Ave, Chicago, IL 60637 USA
3.European Space Res & Technol Ctr ESA ESTEC, Sci Support Off, Directorate Sci, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands
4.ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands
5.Univ Massachusetts, 100 William T,Morrissey Blvd, Boston, MA 02125 USA
6.Univ Sci & Technol China, Dept Astron, Hefei 230026, Anhui, Peoples R China
7.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
8.Univ Coll London, Mullard Space Sci Lab, Holmbury St Mary, Dorking RH5 6NT, Surrey, England
9.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China
10.Brandeis Univ, Dept Phys, 415 South St, Waltham, MA 02453 USA
推荐引用方式
GB/T 7714		 Akiyama, Kazunori,Alberdi, Antxon,Alef, Walter,et al. First M87 Event Horizon Telescope Results. III. Data Processing and Calibration[J]. ASTROPHYSICAL JOURNAL LETTERS,2019,875(1):32.
APA Akiyama, Kazunori.,Alberdi, Antxon.,Alef, Walter.,Asada, Keiichi.,Azulay, Rebecca.,...&Yamaguchi, Paul.(2019).First M87 Event Horizon Telescope Results. III. Data Processing and Calibration.ASTROPHYSICAL JOURNAL LETTERS,875(1),32.
MLA Akiyama, Kazunori,et al."First M87 Event Horizon Telescope Results. III. Data Processing and Calibration".ASTROPHYSICAL JOURNAL LETTERS 875.1(2019):32.

入库方式： OAI收割

来源：上海天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。