Title: | Event Horizon Telescope observations of the jet launching and collimation in Centaurus A |
Authors: | Janssen, Michael Falcke, Heino Kadler, Matthias Ros, Eduardo Wielgus, Maciek Akiyama, Kazunori Baloković, Mislav Blackburn, Lindy Bouman, Katherine L. Chael, Andrew Chan, Chi-kwan Chatterjee, Koushik Davelaar, Jordy Edwards, Philip G. Fromm, Christian M. Gómez, José L. GODDI, CIRIACO Issaoun, Sara Johnson, Michael D. Kim, Junhan Koay, Jun Yi Krichbaum, Thomas P. Liu, Jun LIUZZO, Elisabetta Teodorina Markoff, Sera Markowitz, Alex Marrone, Daniel P. Mizuno, Yosuke Müller, Cornelia Ni, Chunchong Pesce, Dominic W. Ramakrishnan, Venkatessh Roelofs, Freek RYGL, Kazi Lucie Jessica van Bemmel, Ilse Event Horizon Telescope Collaboration Alberdi, Antxon Alef, Walter Algaba, Juan Carlos Anantua, Richard Asada, Keiichi Azulay, Rebecca Baczko, Anne-Kathrin Ball, David Ball, David Barrett, John Benson, Bradford A. Bintley, Dan Bintley, Dan Blundell, Raymond Boland, Wilfred Boland, Wilfred Bower, Geoffrey C. Boyce, Hope Bremer, Michael Brinkerink, Christiaan D. Brissenden, Roger Britzen, Silke Broderick, Avery E. Broguiere, Dominique Bronzwaer, Thomas Byun, Do-Young Carlstrom, John E. Chatterjee, Shami Chen, Ming-Tang Chen, Yongjun Chesler, Paul M. Cho, Ilje Christian, Pierre Conway, John E. Cordes, James M. Crawford, Thomas M. Crew, Geoffrey B. Cruz-Osorio, Alejandro Cui, Yuzhu Cui, Yuzhu De Laurentis, Mariafelicia Deane, Roger Dempsey, Jessica Desvignes, Gregory Dexter, Jason Doeleman, Sheperd S. Eatough, Ralph P. Farah, Joseph Farah, Joseph Fish, Vincent L. Fomalont, Ed Ford, H. Alyson Fraga-Encinas, Raquel Friberg, Per Friberg, Per Fuentes, Antonio Galison, Peter Gammie, Charles F. García, Roberto Gelles, Zachary Gentaz, Olivier Georgiev, Boris Georgiev, Boris Gold, Roman Gold, Roman Gómez-Ruiz, Arturo I. Gu, Minfeng Gurwell, Mark Hada, Kazuhiro Haggard, Daryl Hecht, Michael H. Hesper, Ronald Himwich, Elizabeth Ho, Luis C. Ho, Paul Honma, Mareki Huang, Chih-Wei L. Huang, Lei Hughes, David H. Ikeda, Shiro Inoue, Makoto Inoue, Makoto James, David J. Jannuzi, Buell T. Jannuzi, Buell T. Jeter, Britton Jiang, Wu Jimenez-Rosales, Alejandra Jimenez-Rosales, Alejandra Jorstad, Svetlana Jung, Taehyun Karami, Mansour Karuppusamy, Ramesh Kawashima, Tomohisa Keating, Garrett K. Kettenis, Mark Kim, Dong-Jin Kim, Jae-Young Kim, Jae-Young Kim, Jongsoo Kino, Motoki Kino, Motoki Kofuji, Yutaro Koyama, Shoko Kramer, Michael Kramer, Carsten Kramer, Carsten Kuo, Cheng-Yu Lauer, Tod R. Lee, Sang-Sung Levis, Aviad Li, Yan-Rong Li, Zhiyuan Lindqvist, Michael LICO, Rocco Lindahl, Greg Lindahl, Greg Liu, Kuo Liu, Kuo Lo, Wen-Ping Lobanov, Andrei P. Loinard, Laurent Lonsdale, Colin Lu, Ru-Sen MacDonald, Nicholas R. Mao, Jirong MARCHILI, Nicola MARCHILI, Nicola MARCHILI, Nicola Marscher, Alan P. Martí-Vidal, Iván Matsushita, Satoki Matthews, Lynn D. Medeiros, Lia Menten, Karl M. Mizuno, Izumi Mizuno, Izumi Moran, James M. Moriyama, Kotaro Moscibrodzka, Monika Moscibrodzka, Monika Musoke, Gibwa Mejías, Alejandro Mus Nagai, Hiroshi Nagar, Neil M. Nakamura, Masanori Narayan, Ramesh Narayanan, Gopal Natarajan, Iniyan Nathanail, Antonios Neilsen, Joey Neri, Roberto Neri, Roberto Noutsos, Aristeidis Nowak, Michael A. Okino, Hiroki Olivares, Héctor Ortiz-León, Gisela N. Oyama, Tomoaki Özel, Feryal Palumbo, Daniel C. M. Park, Jongho Patel, Nimesh Pen, Ue-Li Pen, Ue-Li Piétu, Vincent Plambeck, Richard PopStefanija, Aleksandar Porth, Oliver Pötzl, Felix M. Prather, Ben Preciado-López, Jorge A. Psaltis, Dimitrios Pu, Hung-Yi Pu, Hung-Yi Rao, Ramprasad Rawlings, Mark G. Raymond, Alexander W. Rezzolla, Luciano Ricarte, Angelo Ripperda, Bart Ripperda, Bart Rogers, Alan Rogers, Alan Rose, Mel Roshanineshat, Arash Rottmann, Helge Roy, Alan L. Ruszczyk, Chet Ruszczyk, Chet Sánchez, Salvador Sánchez-Arguelles, David Sasada, Mahito Savolainen, Tuomas Schloerb, F. Peter Schuster, Karl-Friedrich Shao, Lijing Shen, Zhiqiang Small, Des Sohn, Bong Won SooHoo, Jason Sun, He Tazaki, Fumie Tetarenko, Alexandra J. Tiede, Paul Tilanus, Remo P. J. Titus, Michael Torne, Pablo Trent, Tyler Traianou, Efthalia Trippe, Sascha van Bemmel, Ilse van Langevelde, Huib Jan van Rossum, Daniel R. Wagner, Jan Ward-Thompson, Derek Wardle, John Weintroub, Jonathan Wex, Norbert Wharton, Robert Wharton, Robert Wong, George N. Wu, Qingwen Yoon, Doosoo Young, André Young, Ken Younsi, Ziri Yuan, Feng Yuan, Ye-Fei Zensus, J. Anton Zhao, Guang-Yao Zhao, Shan-Shan |
Issue Date: | 2021 |
Journal: | NATURE ASTRONOMY |
Number: | 5 |
Issue: | 10 |
First Page: | 1017 |
Abstract: | Very-long-baseline interferometry (VLBI) observations of active galactic nuclei at millimetre wavelengths have the power to reveal the launching and initial collimation region of extragalactic radio jets, down to 10-100 gravitational radii (r<SUB>g</SUB> ≡ GM/c<SUP>2</SUP>) scales in nearby sources<SUP>1</SUP>. Centaurus A is the closest radio-loud source to Earth<SUP>2</SUP>. It bridges the gap in mass and accretion rate between the supermassive black holes (SMBHs) in Messier 87 and our Galactic Centre. A large southern declination of −43° has, however, prevented VLBI imaging of Centaurus A below a wavelength of 1 cm thus far. Here we show the millimetre VLBI image of the source, which we obtained with the Event Horizon Telescope at 228 GHz. Compared with previous observations<SUP>3</SUP>, we image the jet of Centaurus A at a tenfold higher frequency and sixteen times sharper resolution and thereby probe sub-lightday structures. We reveal a highly collimated, asymmetrically edge-brightened jet as well as the fainter counterjet. We find that the source structure of Centaurus A resembles the jet in Messier 87 on ~500 r<SUB>g</SUB> scales remarkably well. Furthermore, we identify the location of Centaurus A's SMBH with respect to its resolved jet core at a wavelength of 1.3 mm and conclude that the source's event horizon shadow<SUP>4</SUP> should be visible at terahertz frequencies. This location further supports the universal scale invariance of black holes over a wide range of masses<SUP>5,6</SUP>. |
URI: | http://hdl.handle.net/20.500.12386/31827 |
URL: | https://www.nature.com/articles/s41550-021-01417-w https://api.elsevier.com/content/abstract/scopus_id/85113880625 |
ISSN: | 2397-3366 |
DOI: | 10.1038/s41550-021-01417-w |
Bibcode ADS: | 2021NatAs...5.1017J |
Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista
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