Abstract
The first very long baseline interferometry (VLBI) detections at 870 μm 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 Gλ, corresponding to an angular resolution, or fringe spacing, of 19 μas. The Allan deviation of the visibility phase at 870 μm 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 μm. 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.
| Original language | English |
|---|---|
| Article number | 130 |
| Journal | Astronomical Journal |
| Volume | 168 |
| Issue number | 3 |
| Number of pages | 19 |
| ISSN | 0004-6256 |
| DOIs | |
| Publication status | Published - Sept 2024 |
Fingerprint
Dive into the research topics of 'First Very Long Baseline Interferometry Detections at 870 μm'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver
}
In: Astronomical Journal, Vol. 168, No. 3, 130, 09.2024.
Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - First Very Long Baseline Interferometry Detections at 870 μm
AU - Raymond, Alexander W.
AU - Doeleman, Sheperd S.
AU - Asada, Keiichi
AU - Blackburn, Lindy
AU - Bower, Geoffrey C.
AU - Bremer, Michael
AU - Broguiere, Dominique
AU - Chen, Ming Tang
AU - Crew, Geoffrey B.
AU - Dornbusch, Sven
AU - Fish, Vincent L.
AU - García, Roberto
AU - Gentaz, Olivier
AU - Goddi, Ciriaco
AU - Han, Chih Chiang
AU - Hecht, Michael H.
AU - Huang, Yau De
AU - Janssen, Michael
AU - Keating, Garrett K.
AU - Koay, Jun Yi
AU - Krichbaum, Thomas P.
AU - Lo, Wen Ping
AU - Matsushita, Satoki
AU - Matthews, Lynn D.
AU - Moran, James M.
AU - Norton, Timothy J.
AU - Patel, Nimesh
AU - Pesce, Dominic W.
AU - Ramakrishnan, Venkatessh
AU - Rottmann, Helge
AU - Roy, Alan L.
AU - Sánchez, Salvador
AU - Tilanus, Remo P.J.
AU - Titus, Michael
AU - Torne, Pablo
AU - Wagner, Jan
AU - Weintroub, Jonathan
AU - Wielgus, Maciek
AU - Young, André
AU - Akiyama, Kazunori
AU - Albentosa-Ruíz, Ezequiel
AU - Alberdi, Antxon
AU - Alef, Walter
AU - Algaba, Juan Carlos
AU - Anantua, Richard
AU - Azulay, Rebecca
AU - Bach, Uwe
AU - Baczko, Anne Kathrin
AU - Ball, David
AU - Balokovic, Mislav
AU - Bandyopadhyay, Bidisha
AU - Barrett, John
AU - Bauböck, Michi
AU - Benson, Bradford A.
AU - Bintley, Dan
AU - Blundell, Raymond
AU - Bouman, Katherine L.
AU - Boyce, Hope
AU - Brissenden, Roger
AU - Britzen, Silke
AU - Broderick, Avery E.
AU - Bronzwaer, Thomas
AU - Bustamante, Sandra
AU - Carlstrom, John E.
AU - Chael, Andrew
AU - Chan, Chi Kwan
AU - Chang, Dominic O.
AU - Chatterjee, Koushik
AU - Chatterjee, Shami
AU - Chen, Yongjun
AU - Cheng, Xiaopeng
AU - Cho, Ilje
AU - Christian, Pierre
AU - Conroy, Nicholas S.
AU - Conway, John E.
AU - Crawford, Thomas M.
AU - Cruz-Osorio, Alejandro
AU - Cui, Yuzhu
AU - Dahale, Rohan
AU - Davelaar, Jordy
AU - De Laurentis, Mariafelicia
AU - Deane, Roger
AU - Dempsey, Jessica
AU - Desvignes, Gregory
AU - Dexter, Jason
AU - Dhruv, Vedant
AU - Dihingia, Indu K.
AU - Dzib, Sergio A.
AU - Eatough, Ralph P.
AU - Emami, Razieh
AU - Falcke, Heino
AU - Farah, Joseph
AU - Fomalont, Edward
AU - Fontana, Anne Laure
AU - Ford, H. Alyson
AU - Foschi, Marianna
AU - Fraga-Encinas, Raquel
AU - Freeman, William T.
AU - Friberg, Per
AU - Fromm, Christian M.
AU - Fuentes, Antonio
AU - Galison, Peter
AU - Gammie, Charles F.
AU - Georgiev, Boris
AU - Gold, Roman
AU - Gómez-Ruiz, Arturo I.
AU - Gómez, José L.
AU - Gu, Minfeng
AU - Gurwell, Mark
AU - Hada, Kazuhiro
AU - Haggard, Daryl
AU - Hesper, Ronald
AU - Heumann, Dirk
AU - Ho, Luis C.
AU - Ho, Paul
AU - Honma, Mareki
AU - Huang, Chih Wei L.
AU - Huang, Lei
AU - Hughes, David H.
AU - Ikeda, Shiro
AU - Impellizzeri, C. M.Violette
AU - Inoue, Makoto
AU - Issaoun, Sara
AU - James, David J.
AU - Jannuzi, Buell T.
AU - Jeter, Britton
AU - Jiang, Wu
AU - Jiménez-Rosales, Alejandra
AU - Johnson, Michael D.
AU - Jorstad, Svetlana
AU - Jones, Adam C.
AU - Joshi, Abhishek V.
AU - Jung, Taehyun
AU - Karuppusamy, Ramesh
AU - Kawashima, Tomohisa
AU - Kettenis, Mark
AU - Kim, Dong Jin
AU - Kim, Jae Young
AU - Kim, Jongsoo
AU - Kim, Junhan
AU - Kino, Motoki
AU - Kocherlakota, Prashant
AU - Kofuji, Yutaro
AU - Koch, Patrick M.
AU - Koyama, Shoko
AU - Kramer, Carsten
AU - Kramer, Joana A.
AU - Kramer, Michael
AU - Kubo, Derek
AU - Kuo, Cheng Yu
AU - La Bella, Noemi
AU - Lee, Sang Sung
AU - Levis, Aviad
AU - Li, Zhiyuan
AU - Lico, Rocco
AU - Lindahl, Greg
AU - Lindqvist, Michael
AU - Lisakov, Mikhail
AU - Liu, Jun
AU - Liu, Kuo
AU - Liuzzo, Elisabetta
AU - Lobanov, Andrei P.
AU - Loinard, Laurent
AU - Lonsdale, Colin J.
AU - Lowitz, Amy E.
AU - Lu, Ru Sen
AU - MacDonald, Nicholas R.
AU - Mahieu, Sylvain
AU - Maier, Doris
AU - Mao, Jirong
AU - Marchili, Nicola
AU - Markoff, Sera
AU - Marrone, Daniel P.
AU - Marscher, Alan P.
AU - Martí-Vidal, Iván
AU - Medeiros, Lia
AU - Menten, Karl M.
AU - Mizuno, Izumi
AU - Mizuno, Yosuke
AU - Montgomery, Joshua
AU - Moriyama, Kotaro
AU - Moscibrodzka, Monika
AU - Mulaudzi, Wanga
AU - Müller, Cornelia
AU - Müller, Hendrik
AU - Mus, Alejandro
AU - Musoke, Gibwa
AU - Myserlis, Ioannis
AU - Nagai, Hiroshi
AU - Nagar, Neil M.
AU - Nakamura, Masanori
AU - Narayanan, Gopal
AU - Natarajan, Iniyan
AU - Nathanail, Antonios
AU - Fuentes, Santiago Navarro
AU - Neilsen, Joey
AU - Ni, Chunchong
AU - Nowak, Michael A.
AU - Oh, Junghwan
AU - Okino, Hiroki
AU - Olivares Sánchez, Héctor Raúl
AU - Oyama, Tomoaki
AU - Özel, Feryal
AU - Palumbo, Daniel C.M.
AU - Paraschos, Georgios Filippos
AU - Park, Jongho
AU - Parsons, Harriet
AU - Pen, Ue Li
AU - Piétu, Vincent
AU - PopStefanija, Aleksandar
AU - Porth, Oliver
AU - Prather, Ben
AU - Principe, Giacomo
AU - Psaltis, Dimitrios
AU - Pu, Hung Yi
AU - Raffin, Philippe A.
AU - Rao, Ramprasad
AU - Rawlings, Mark G.
AU - Ricarte, Angelo
AU - Ripperda, Bart
AU - Roelofs, Freek
AU - Romero-Cañizales, Cristina
AU - Ros, Eduardo
AU - Roshanineshat, Arash
AU - Ruiz, Ignacio
AU - Ruszczyk, Chet
AU - Rygl, Kazi L.J.
AU - Sánchez-Argüelles, David
AU - Sánchez-Portal, Miguel
AU - Sasada, Mahito
AU - Satapathy, Kaushik
AU - Savolainen, Tuomas
AU - Schloerb, F. Peter
AU - Schonfeld, Jonathan
AU - Schuster, Karl Friedrich
AU - Shao, Lijing
AU - Shen, Zhiqiang
AU - Small, Des
AU - Sohn, Bong Won
AU - SooHoo, Jason
AU - Sosapanta Salas, León David
AU - Souccar, Kamal
AU - Stanway, Joshua S.
AU - Sun, He
AU - Tazaki, Fumie
AU - Tetarenko, Alexandra J.
AU - Tiede, Paul
AU - Toma, Kenji
AU - Toscano, Teresa
AU - Traianou, Efthalia
AU - Trent, Tyler
AU - Trippe, Sascha
AU - Turk, Matthew
AU - van Bemmel, Ilse
AU - van Langevelde, Huib Jan
AU - van Rossum, Daniel R.
AU - Vos, Jesse
AU - Ward-Thompson, Derek
AU - Wardle, John
AU - Washington, Jasmin E.
AU - Wharton, Robert
AU - Wiik, Kaj
AU - Witzel, Gunther
AU - Wondrak, Michael F.
AU - Wong, George N.
AU - Wu, Qingwen
AU - Yadlapalli, Nitika
AU - Yamaguchi, Paul
AU - Yfantis, Aristomenis
AU - Yoon, Doosoo
AU - Younsi, Ziri
AU - Yu, Wei
AU - Yuan, Feng
AU - Yuan, Ye Fei
AU - Zensus, J. Anton
AU - Zhang, Shuo
AU - Zhao, Guang Yao
AU - Zhao, Shan Shan
PY - 2024/9
Y1 - 2024/9
N2 - The first very long baseline interferometry (VLBI) detections at 870 μm 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 Gλ, corresponding to an angular resolution, or fringe spacing, of 19 μas. The Allan deviation of the visibility phase at 870 μm 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 μm. 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.
AB - The first very long baseline interferometry (VLBI) detections at 870 μm 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 Gλ, corresponding to an angular resolution, or fringe spacing, of 19 μas. The Allan deviation of the visibility phase at 870 μm 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 μm. 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.
U2 - 10.3847/1538-3881/ad5bdb
DO - 10.3847/1538-3881/ad5bdb
M3 - Journal article
AN - SCOPUS:85202531242
SN - 0004-6256
VL - 168
JO - Astronomical Journal
JF - Astronomical Journal
IS - 3
M1 - 130
ER -