First Very Long Baseline Interferometry Detections at 870 μm

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Raymond, Alexander W. ; Doeleman, Sheperd S. ; Asada, Keiichi ; Blackburn, Lindy ; Bower, Geoffrey C. ; Bremer, Michael ; Broguiere, Dominique ; Chen, Ming-Tang ; Crew, Geoffrey B. ; Dornbusch, Sven ; Fish, Vincent L. ; Garcia, Roberto ; Gentaz, Olivier ; Goddi, Ciriaco ; Han, Chih-Chiang ; Hecht, Michael H. ; Huang, Yau-De ; Janssen, Michael ; Keating, Garrett K. ; Koay, Jun Yi ; Krichbaum, Thomas P. ; Lo, Wen-Ping ; Matsushita, Satoki ; Matthews, Lynn D. ; Moran, James M. ; Norton, Timothy J. ; Patel, Nimesh ; Pesce, Dominic W. ; Ramakrishnan, Venkatessh ; Rottmann, Helge ; Roy, Alan L. ; Sanchez, Salvador ; Tilanus, Remo P. J. ; Titus, Michael ; Torne, Pablo ; Wagner, Jan ; Weintroub, Jonathan ; Wielgus, Maciek ; Young, Andre ; Akiyama, Kazunori ; Albentosa-Ruiz, Ezequiel ; Alberdi, Antxon ; Alef, Walter ; Algaba, Juan Carlos ; Anantua, Richard ; Azulay, Rebecca ; Bach, Uwe ; Baczko, Anne-Kathrin ; Ball, David ; Balokovic, Mislav ; Bandyopadhyay, Bidisha ; Barrett, John ; Bauboeck, Michi ; Benson, Bradford A. ; Bintley, Dan ; Blundell, Raymond ; Bouman, Katherine L. ; Boyce, Hope ; Brissenden, Roger ; Britzen, Silke ; Broderick, Avery E. ; Bronzwaer, Thomas ; Bustamante, Sandra ; Carlstrom, John E. ; Chael, Andrew ; Chan, Chi-kwan ; Chang, Dominic O. ; Chatterjee, Koushik ; Chatterjee, Shami ; Chen, Yongjun ; Cheng, Xiaopeng ; Cho, Ilje ; Christian, Pierre ; Conroy, Nicholas S. ; Conway, John E. ; Crawford, Thomas M. ; Cruz-Osorio, Alejandro ; Cui, Yuzhu ; Dahale, Rohan ; Davelaar, Jordy ; De Laurentis, Mariafelicia ; Deane, Roger ; Dempsey, Jessica ; Desvignes, Gregory ; Dexter, Jason ; Dhruv, Vedant ; Dihingia, Indu K. ; Dzib, Sergio A. ; Eatough, Ralph P. ; Emami, Razieh ; Falcke, Heino ; Farah, Joseph ; Fomalont, Edward ; Fontana, Anne-Laure ; Ford, H. Alyson ; Foschi, Marianna ; Fraga-Encinas, Raquel ; Freeman, William T. ; Friberg, Per ; Fromm, Christian M. ; Fuentes, Antonio ; Galison, Peter ; Gammie, Charles F. ; Georgiev, Boris ; Gold, Roman ; Gomez-Ruiz, Arturo I. ; Gomez, Jose L. ; Gu, Minfeng ; Gurwell, Mark ; Hada, Kazuhiro ; Haggard, Daryl ; Hesper, Ronald ; Heumann, Dirk ; Ho, Luis C. ; Ho, Paul ; Honma, Mareki ; Huang, Chih-Wei L. ; Huang, Lei ; Hughes, David H. ; Ikeda, Shiro ; Impellizzeri, C. M. Violette ; Inoue, Makoto ; Issaoun, Sara ; James, David J. ; Jannuzi, Buell T. ; Jeter, Britton ; Jiang, Wu ; Jimenez-Rosales, Alejandra ; Johnson, Michael D. ; Jorstad, Svetlana ; Jones, Adam C. ; Joshi, Abhishek V. ; Jung, Taehyun ; Karuppusamy, Ramesh ; Kawashima, Tomohisa ; Kettenis, Mark ; Kim, Dong-Jin ; Kim, Jae-Young ; Kim, Jongsoo ; Kim, Junhan ; Kino, Motoki ; Kocherlakota, Prashant ; Kofuji, Yutaro ; Koch, Patrick M. ; Koyama, Shoko ; Kramer, Carsten ; Kramer, Joana A. ; Kramer, Michael ; Kubo, Derek ; Kuo, Cheng-Yu ; La Bella, Noemi ; Lee, Sang-Sung ; Levis, Aviad ; Li, Zhiyuan ; Lico, Rocco ; Lindahl, Greg ; Lindqvist, Michael ; Lisakov, Mikhail ; Liu, Jun ; Liu, Kuo ; Liuzzo, Elisabetta ; Lobanov, Andrei P. ; Loinard, Laurent ; Lonsdale, Colin J. ; Lowitz, Amy E. ; Lu, Ru-Sen ; MacDonald, Nicholas R. ; Mahieu, Sylvain ; Maier, Doris ; Mao, Jirong ; Marchili, Nicola ; Markoff, Sera ; Marrone, Daniel P. ; Marscher, Alan P. ; Marti-Vidal, Ivan ; Medeiros, Lia ; Menten, Karl M. ; Mizuno, Izumi ; Mizuno, Yosuke ; Montgomery, Joshua ; Moriyama, Kotaro ; Moscibrodzka, Monika ; Mulaudzi, Wanga ; Mueller, Cornelia ; Mueller, Hendrik ; Mus, Alejandro ; Musoke, Gibwa ; Myserlis, Ioannis ; Nagai, Hiroshi ; Nagar, Neil M. ; Nakamura, Masanori ; Narayanan, Gopal ; Natarajan, Iniyan ; Nathanail, Antonios ; Fuentes, Santiago Navarro ; Neilsen, Joey ; Ni, Chunchong ; Nowak, Michael A. ; Oh, Junghwan ; Okino, Hiroki ; Olivares Sanchez, Hector Raul ; Oyama, Tomoaki ; OEzel, Feryal ; Palumbo, Daniel C. M. ; Paraschos, Georgios Filippos ; Park, Jongho ; Parsons, Harriet ; Pen, Ue-Li ; Pietu, Vincent ; PopStefanija, Aleksandar ; Porth, Oliver ; Prather, Ben ; Principe, Giacomo ; Psaltis, Dimitrios ; Pu, Hung-Yi ; Raffin, Philippe A. ; Rao, Ramprasad ; Rawlings, Mark G. ; Ricarte, Angelo ; Ripperda, Bart ; Roelofs, Freek ; Romero-Canizales, Cristina ; Ros, Eduardo ; Roshanineshat, Arash ; Ruiz, Ignacio ; Ruszczyk, Chet ; Rygl, Kazi L. J. ; Sanchez-Argueelles, David ; Sanchez-Portal, Miguel ; Sasada, Mahito ; Satapathy, Kaushik ; Savolainen, Tuomas ; Schloerb, F. Peter ; Schonfeld, Jonathan ; Schuster, Karl-Friedrich ; Shao, Lijing ; Shen, Zhiqiang ; Small, Des ; Sohn, Bong Won ; SooHoo, Jason ; Sosapanta Salas, Leon David ; Souccar, Kamal ; Stanway, Joshua S. ; Sun, He ; Tazaki, Fumie ; Tetarenko, Alexandra J. ; Tiede, Paul ; Toma, Kenji ; Toscano, Teresa ; Traianou, Efthalia ; Trent, Tyler ; Trippe, Sascha ; Turk, Matthew ; van Bemmel, Ilse ; van Langevelde, Huib Jan ; van Rossum, Daniel R. ; Vos, Jesse ; Ward-Thompson, Derek ; Wardle, John ; Washington, Jasmin E. ; Wharton, Robert ; Wiik, Kaj ; Witzel, Gunther ; Wondrak, Michael F. ; Wong, George N. ; Wu, Qingwen ; Yadlapalli, Nitika ; Yamaguchi, Paul ; Yfantis, Aristomenis ; Yoon, Doosoo ; Younsi, Ziri ; Yu, Wei ; Yuan, Feng ; Yuan, Ye-Fei ; Zensus, J. Anton ; Zhang, Shuo ; Zhao, Guang-Yao ; Zhao, Shan-Shan

• Tipo de documento: Artigo Científico
• Fonte: ASTRONOMICAL JOURNAL; v. 168, n. 3, p. 19-pg., 2024-09-01.

Resumo

The first very long baseline interferometry (VLBI) detections at 870 mu m wavelength (345 GHz frequency) are reported, achieving the highest diffraction-limited angular resolution yet obtained from the surface of the Earth and the highest-frequency example of the VLBI technique to date. These include strong detections for multiple sources observed on intercontinental baselines between telescopes in Chile, Hawaii, and Spain, obtained during observations in 2018 October. The longest-baseline detections approach 11 G lambda, corresponding to an angular resolution, or fringe spacing, of 19 mu as. The Allan deviation of the visibility phase at 870 mu m is comparable to that at 1.3 mm on the relevant integration timescales between 2 and 100 s. The detections confirm that the sensitivity and signal chain stability of stations in the Event Horizon Telescope (EHT) array are suitable for VLBI observations at 870 mu m. Operation at this short wavelength, combined with anticipated enhancements of the EHT, will lead to a unique high angular resolution instrument for black hole studies, capable of resolving the event horizons of supermassive black holes in both space and time. (AU)

• Processo FAPESP: 21/01183-8 - Estudo de jatos astrofísicos em alta resolução por meio de interferometria
• Beneficiário: Ciriaco Goddi
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores