Monthly Notices of the Royal Astronomical Society 530(3) 2590-2607 2024年4月
ABSTRACT
A substantial fraction of quasars display broad absorption lines (BALs) in their rest-frame ultraviolet spectra. While the origin of BALs is thought to be related to the accretion disc wind, it remains unclear whether the observed ratio...
Ru-Sen Lu Keiichi Asada Thomas P. Krichbaum Jongho Park Fumie Tazaki Hung-Yi Pu Masanori Nakamura Andrei Lobanov Kazuhiro Hada Kazunori Akiyama Jae-Young Kim Ivan Marti-Vidal José L. Gómez Tomohisa Kawashima Feng Yuan Eduardo Ros Walter Alef Silke Britzen Michael Bremer Avery E. Broderick Akihiro Doi Gabriele Giovannini Marcello Giroletti Paul T. P. Ho Mareki Honma David H. Hughes Makoto Inoue Wu Jiang Motoki Kino Shoko Koyama Michael Lindqvist Jun Liu Alan P. Marscher Satoki Matsushita Hiroshi Nagai Helge Rottmann Tuomas Savolainen Karl-Friedrich Schuster Zhi-Qiang Shen Pablo de Vicente R. Craig Walker Hai Yang J. Anton Zensus Juan Carlos Algaba Alexander Allardi Uwe Bach Ryan Berthold Dan Bintley Do-Young Byun Carolina Casadio Shu-Hao Chang Chih-Cheng Chang Song-Chu Chang Chung-Chen Chen Ming-Tang Chen Ryan Chilson Tim C. Chuter John Conway Geoffrey B. Crew Jessica T. Dempsey Sven Dornbusch Aaron Faber Per Friberg Javier González García Miguel Gómez Garrido Chih-Chiang Han Kuo-Chang Han Yutaka Hasegawa Ruben Herrero-Illana Yau-De Huang Chih-Wei L. Huang Violette Impellizzeri Homin Jiang Hao Jinchi Taehyun Jung Juha Kallunki Petri Kirves Kimihiro Kimura Jun Yi Koay Patrick M. Koch Carsten Kramer Alex Kraus Derek Kubo Cheng-Yu Kuo Chao-Te Li Lupin Chun-Che Lin Ching-Tang Liu Kuan-Yu Liu Wen-Ping Lo Li-Ming Lu Nicholas MacDonald Pierre Martin-Cocher Hugo Messias Zheng Meyer-Zhao Anthony Minter Dhanya G. Nair Hiroaki Nishioka Timothy J. Norton George Nystrom Hideo Ogawa Peter Oshiro Nimesh A. Patel Ue-Li Pen Yurii Pidopryhora Nicolas Pradel Philippe A. Raffin Ramprasad Rao Ignacio Ruiz Salvador Sanchez Paul Shaw William Snow T. K. Sridharan Ranjani Srinivasan Belén Tercero Pablo Torne Efthalia Traianou Jan Wagner Craig Walther Ta-Shun Wei Jun Yang Chen-Yu Yu
Nature 616(7958) 686-690 2023年4月 [査読有り]
Abstract
The nearby radio galaxy M87 is a prime target for studying black hole accretion and jet formation1,2. Event Horizon Telescope observations of M87 in 2017, at a wavelength of 1.3 mm, revealed a ring-like structure, which was in...
We report on results from new high-sensitivity, high-resolution 86GHz (3.5<br />
millimeter) observations of the jet base in the nearby radio galaxy M87,<br />
obtained by the Very Long Baseline Array in conjunction with the Green Bank<br />
Teles...
Kazuhiro Hada Marcello Giroletti Gabriele Giovannini Carolina Casadio Matthias Beilicke Andrea Cesarini Teddy Cheung Akihiro Doi José Luis Gómez Henric Krawczynski Motoki Kino Hiroshi Nagai
2015年4月
The relativistic jet in M87 offers a unique opportunity for understanding the<br />
detailed jet structure and emission processes due to its proximity. In<br />
particular, the peculiar jet region HST-1 at ~1 arcsecond (or 80 pc, projected)<br />
...
Hiraku Sakamoto Hiroaki Tanaka Kosei Ishimura Akihiro Doi Yusuke Kono
26th International Conference on Adaptive Structures and Technologies, ICAST 2015 2015年1月
The present paper reports the results of shape-control experiments using the smart secondary reflector prototype for satellite-borne radio-astronomy. The shape of the secondary reflector is modified by six special piezoelectric actuators with disp...
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