Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Niinuma, Kotaro"'
Autor:
Iwata, Yuhei, Akimoto, Masanori, Matsuoka, Tomoki, Maeda, Keiichi, Yonekura, Yoshinori, Tominaga, Nozomu, Moriya, Takashi J., Fujisawa, Kenta, Niinuma, Kotaro, Yoon, Sung-Chul, Lee, Jae-Joon, Jung, Taehyun, Byun, Do-Young
We report on radio follow-up observations of the nearby Type II supernova, SN 2023ixf, spanning from 1.7 to 269.9 days after the explosion, conducted using three very long baseline interferometers (VLBIs), which are the Japanese VLBI Network (JVN), t
Externí odkaz:
http://arxiv.org/abs/2411.07542
Autor:
Kawashima, Tomohisa, Tsunetoe, Yuh, Ohsuga, Ken, Kino, Motoki, Mizuno, Yosuke, Moriyama, Kotaro, Saida, Hiromi, Akiyama, Kazunori, Hada, Kazuhiro, Niinuma, Kotaro
Black Hole Explorer (BHEX) is a space VLBI mission concept, which can probe the black hole spacetime and the plasma properties including the magnetic fields of the accretion flows and relativistic jets. We propose science cases anticipated to be addr
Externí odkaz:
http://arxiv.org/abs/2406.09995
Autor:
Johnson, Michael D., Akiyama, Kazunori, Baturin, Rebecca, Bilyeu, Bryan, Blackburn, Lindy, Boroson, Don, Cardenas-Avendano, Alejandro, Chael, Andrew, Chan, Chi-kwan, Chang, Dominic, Cheimets, Peter, Chou, Cathy, Doeleman, Sheperd S., Farah, Joseph, Galison, Peter, Gamble, Ronald, Gammie, Charles F., Gelles, Zachary, Gomez, Jose L., Gralla, Samuel E., Grimes, Paul, Gurvits, Leonid I., Hadar, Shahar, Haworth, Kari, Hada, Kazuhiro, Hecht, Michael H., Honma, Mareki, Houston, Janice, Hudson, Ben, Issaoun, Sara, Jia, He, Jorstad, Svetlana, Kauffmann, Jens, Kovalev, Yuri Y., Kurczynski, Peter, Lafon, Robert, Lupsasca, Alexandru, Lehmensiek, Robert, Ma, Chung-Pei, Marrone, Daniel P., Marscher, Alan P., Melnick, Gary J., Narayan, Ramesh, Niinuma, Kotaro, Noble, Scott C., Palmer, Eric J., Palumbo, Daniel C. M., Paritsky, Lenny, Peretz, Eliad, Pesce, Dominic, Plavin, Alexander, Quataert, Eliot, Rana, Hannah, Ricarte, Angelo, Roelofs, Freek, Shtyrkova, Katia, Sinclair, Laura C., Small, Jeffrey, Kumara, Sridharan Tirupati, Srinivasan, Ranjani, Strominger, Andrew, Tiede, Paul, Tong, Edward, Wang, Jade, Weintroub, Jonathan, Wielgus, Maciek, Wong, George, Zhang, Xinyue Alice
Publikováno v:
Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130922D (2024)
We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry (VLBI) to space. BHEX will discover and measure the bright and narrow
Externí odkaz:
http://arxiv.org/abs/2406.12917
Autor:
Akiyama, Kazunori, Niinuma, Kotaro, Hada, Kazuhiro, Doi, Akihiro, Hagiwara, Yoshiaki, Higuchi, Aya E., Honma, Mareki, Kawashima, Tomohisa, Kolev, Dimitar, Koyama, Shoko, Masui, Sho, Ohsuga, Ken, Sano, Hidetoshi, Takami, Hideki, Tsunetoe, Yuh, Uzawa, Yoshinori, Akahori, Takuya, Akiyama, Yuto, Galison, Peter, Hayashi, Takayuki J., Hirota, Tomoya, Inoue, Makoto, Iwata, Yuhei, Johnson, Michael D., Kino, Motoki, Kofuji, Yutaro, Mizuno, Yosuke, Moriyama, Kotaro, Nagai, Hiroshi, Nakamura, Kenta, Notsu, Shota, Ono, Fumie, Oya, Yoko, Oyama, Tomoaki, Rana, Hannah, Saida, Hiromi, Saito, Ryo, Saito, Yoshihiko, Sasada, Mahito, Sawada-Satoh, Satoko, Takahashi, Mikiya M., Takamura, Mieko, Tong, Edward, Tsuji, Hiroyuki, Yoshioka, Shogo, Watanabe, Yoshimasa
Publikováno v:
Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130922E, 2024 August 23
The Black Hole Explorer (BHEX) is a next-generation space very long baseline interferometry (VLBI) mission concept that will extend the ground-based millimeter/submillimeter arrays into space. The mission, closely aligned with the science priorities
Externí odkaz:
http://arxiv.org/abs/2406.09516
Autor:
Cui, Yuzhu, Hada, Kazuhiro, Kawashima, Tomohisa, Kino, Motoki, Lin, Weikang, Mizuno, Yosuke, Ro, Hyunwook, Honma, Mareki, Yi, Kunwoo, Yu, Jintao, Park, Jongho, Jiang, Wu, Shen, Zhiqiang, Kravchenko, Evgeniya, Algaba, Juan-Carlos, Cheng, Xiaopeng, Cho, Ilje, Giovannini, Gabriele, Giroletti, Marcello, Jung, Taehyun, Lu, Ru-Sen, Niinuma, Kotaro, Oh, Junghwan, Ohsuga, Ken, Sawada-Satoh, Satoko, Sohn, Bong Won, Takahashi, Hiroyuki R., Takamura, Mieko, Tazaki, Fumie, Trippe, Sascha, Wajima, Kiyoaki, Akiyama, Kazunori, An, Tao, Asada, Keiichi, Buttaccio, Salvatore, Byun, Do-Young, Cui, Lang, Hagiwara, Yoshiaki, Hirota, Tomoya, Hodgson, Jeffrey, Kawaguchi, Noriyuki, Kim, Jae-Young, Lee, Sang-Sung, Lee, Jee Won, Lee, Jeong Ae, Maccaferri, Giuseppe, Melis, Andrea, Melnikov, Alexey, Migoni, Carlo, Oh, Se-Jin, Sugiyama, Koichiro, Wang, Xuezheng, Zhang, Yingkang, Chen, Zhong, Hwang, Ju-Yeon, Jung, Dong-Kyu, Kim, Hyo-Ryoung, Kim, Jeong-Sook, Kobayashi, Hideyuki, Li, Bin, Li, Guanghui, Li, Xiaofei, Liu, Zhiyong, Liu, Qinghui, Liu, Xiang, Oh, Chung-Sik, Oyama, Tomoaki, Roh, Duk-Gyoo, Wang, Jinqing, Wang, Na, Wang, Shiqiang, Xia, Bo, Yan, Hao, Yeom, Jae-Hwan, Yonekura, Yoshinori, Yuan, Jianping, Zhang, Hua, Zhao, Rongbing, Zhong, Weiye
Publikováno v:
2023, Nature, 621, 711-715
The nearby radio galaxy M87 offers a unique opportunity to explore the connections between the central supermassive black hole and relativistic jets. Previous studies of the inner region of M87 revealed a wide opening angle for the jet originating ne
Externí odkaz:
http://arxiv.org/abs/2310.09015
We report dual-frequency very long baseline interferometry (VLBI) observations at 22 and 43 GHz toward the nucleus of a nearby radio galaxy NGC 4261. In particular, we present a VLBI image of the 22 GHz H2O maser line and its location in the circumnu
Externí odkaz:
http://arxiv.org/abs/2304.13245
Autor:
Ro, Hyunwook, Kino, Motoki, Sohn, Bong Won, Hada, Kazuhiro, Park, Jongho, Nakamura, Masanori, Cui, Yuzhu, Yi, Kunwoo, Chung, Aeree, Hodgson, Jeffrey, Kawashima, Tomohisa, An, Tao, Trippe, Sascha, Algaba, Juan-Carlos, Kim, Jae-Young, Sawada-Satoh, Satoko, Wajima, Kiyoaki, Shen, Zhiqiang, Cheng, Xiaopeng, Cho, Ilje, Jiang, Wu, Jung, Taehyun, Lee, Jee-Won, Niinuma, Kotaro, Oh, Junghwan, Tazaki, Fumie, Zhao, Guang-Yao, Akiyama, Kazunori, Honma, Mareki, Lee, Jeong Ae, Lu, Rusen, Zhang, Yingkang, Asada, Keiichi, Cui, Lang, Hagiwara, Yoshiaki, Hirota, Tomoya, Kawaguchi, Noriyuki, Koyama, Shoko, Lee, Sang-Sung, Oh, Se-Jin, Sugiyama, Koichiro, Takamura, Mieko, Wang, Xuezheng, Hwang, Ju-Yeon, Jung, Dong-Kyu, Kim, Hyo-Ryoung, Kim, Jeong-Sook, Kobayashi, Hideyuki, Oh, Chung-Sik, Oyama, Tomoaki, Roh, Duk-Gyoo, Yeom, Jae-Hwan
Publikováno v:
A&A 673, A159 (2023)
Because of its proximity and the large size of its black hole, M87 is one of the best targets for studying the launching mechanism of active galactic nucleus jets. Currently, magnetic fields are considered to be an essential factor in the launching a
Externí odkaz:
http://arxiv.org/abs/2303.01014
Autor:
Akiyama, Kazunori, Algaba, Juan-Carlos, An, Tao, Asada, Keiichi, Asanok, Kitiyanee, Byun, Do-Young, Chanapote, Thanapol, Chen, Wen, Chen, Zhong, Cheng, Xiaopeng, Chibueze, James O., Cho, Ilje, Cho, Se-Hyung, Chung, Hyun-Soo, Cui, Lang, Cui, Yuzhu, Doi, Akihiro, Dong, Jian, Fujisawa, Kenta, Gou, Wei, Guo, Wen, Hada, Kazuhiro, Hagiwara, Yoshiaki, Hirota, Tomoya, Hodgson, Jeffrey A., Honma, Mareki, Imai, Hiroshi, Jaroenjittichai, Phrudth, Jiang, Wu, Jiang, Yongbin, Jiang, Yongchen, Jike, Takaaki, Jung, Dong-Kyu, Jung, Taehyun, Kawaguchi, Noriyuki, Kim, Dong-Jin, Kim, Hyo-Ryoung, Kim, Jaeheon, Kim, Jeong-Sook, Kim, Kee-Tae, Kim, Soon-Wook, Kino, Motoki, Kobayashi, Hideyuki, Koyama, Shoko, Kramer, Busaba H., Lee, Jee-Won, Lee, Jeong Ae, Lee, Sang-Sung, Lee, Sang Won, Li, Bin, Li, Guanghui, Li, Xiaofei, Li, Zhixuan, Liu, Qinghui, Liu, Xiang, Lu, Ru-Sen, Motogi, Kazuhito, Nakamura, Masanori, Niinuma, Kotaro, Oh, Chungsik, Oh, Hongjong, Oh, Junghwan, Oh, Se-Jin, Oyama, Tomoaki, Park, Jongho, Poshyachinda, Saran, Ro, Hyunwook, Roh, Duk-Gyoo, Rujopakarn, Wiphu, Sakai, Nobuyuki, Sawada-Satoh, Satoko, Shen, Zhi-Qiang, Shibata, Katsunori M., Sohn, Bong Won, Soonthornthum, Boonrucksar, Sugiyama, Koichiro, Sun, Yunxia, Takamura, Mieko, Tanabe, Yoshihiro, Tazaki, Fumie, Trippe, Sascha, Wajima, Kiyoaki, Wang, Jinqing, Wang, Na, Wang, Shiqiang, Wang, Xuezheng, Xia, Bo, Xu, Shuangjing, Yan, Hao, Yang, Wenjun, Yeom, Jae-Hwan, Yi, Kunwoo, Yi, Sang-Oh, Yonekura, Yoshinori, Yoon, Hasu, Yu, Linfeng, Yuan, Jianping, Yun, Youngjoo, Zhang, Bo, Zhang, Hua, Zhang, Yingkang, Zhao, Guang-Yao, Zhao, Rongbing, Zhong, Weiye
Publikováno v:
Galaxies 2022, 10(6), 113
The East Asian VLBI Network (EAVN) is an international VLBI facility in East Asia and is operated under mutual collaboration between East Asian countries, as well as part of Southeast Asian and European countries. EAVN currently consists of 16 radio
Externí odkaz:
http://arxiv.org/abs/2212.07040
Autor:
Ikebe, Sota, Takefuji, Kazuhiro, Terasawa, Toshio, Eie, Sujin, Akahori, Takuya, Murata, Yasuhiro, Hashimoto, Tetsuya, Kisaka, Shota, Honma, Mareki, Yoshiura, Shintaro, Suzuki, Syunsaku, Oyama, Tomoaki, Sekido, Mamoru, Niinuma, Kotaro, Takeuchi, Hiroshi, Yonekura, Yoshinori, Enoto, Teruaki
We present a detection of a bright burst from FRB 20201124A, which is one of the most active repeating FRBs, based on S-band observations with the 64-m radio telescope at the Usuda Deep Space Center/JAXA. This is the first FRB observed by using a Jap
Externí odkaz:
http://arxiv.org/abs/2211.13835
Autor:
Cho, Ilje, Zhao, Guang-Yao, Kawashima, Tomohisa, Kino, Motoki, Akiyama, Kazunori, Johnson, Michael D., Issaoun, Sara, Moriyama, Kotaro, Cheng, Xiaopeng, Algaba, Juan-Carlos, Jung, Taehyun, Sohn, Bong Won, Krichbaum, Thomas P., Wielgus, Maciek, Hada, Kazuhiro, Lu, Ru-Sen, Cui, Yuzhu, Sawada-Satoh, Satoko, Shen, Zhiqiang, Park, Jongho, Jiang, Wu, Ro, Hyunwook, Yi, Kunwoo, Wajima, Kiyoaki, Lee, Jee Won, Hodgson, Jeffrey, Tazaki, Fumie, Honma, Mareki, Niinuma, Kotaro, Trippe, Sascha, An, Tao, Zhang, Yingkang, Lee, Jeong Ae, Oh, Se-Jin, Byun, Do-Young, Lee, Sang-Sung, Kim, Jae-Young, Oh, Junghwan, Koyama, Shoko, Asada, Keiichi, Wang, Xuezheng, Cui, Lang, Hagiwara, Yoshiaki, Nakamura, Masanori, Takamura, Mieko, Hirota, Tomoya, Sugiyama, Koichiro, Kawaguchi, Noriyuki, Kobayashi, Hideyuki, Oyama, Tomoaki, Yonekura, Yoshinori, Kim, Jongsoo, Hwang, Ju-Yeon, Jung, Dong-Kyu, Kim, Hyo-Ryoung, Kim, Jeong-Sook, Oh, Chung-Sik, Roh, Duk-Gyoo, Yeom, Jae-Hwan, Xia, Bo, Zhong, Weiye, Li, Bin, Zhao, Rongbing, Wang, Jinqing, Liu, Qinghui, Chen, Zhong
Sagittarius A* (Sgr A*), the Galactic Center supermassive black hole (SMBH), is one of the best targets to resolve the innermost region of SMBH with very long baseline interferometry (VLBI). In this study, we have carried out observations toward Sgr
Externí odkaz:
http://arxiv.org/abs/2112.04929