Search Results - "Yonekura, Yoshinori"

Mid-infrared and Maser Flux Variability Correlation in Massive Young Stellar Object G036.70+00.09 by Uchiyama, Mizuho, Ichikawa, Kohei, Sugiyama, Koichiro, Tanabe, Yoshihiro, Yonekura, Yoshinori

“…Abstract We present the discovery of the simultaneous flux variation of a massive young stellar object (MYSO) G036.70+00.09 (G036.70) both in the maser…”
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Multi-frequency radio observations of the radio-loud magnetar XTE J1810−197 by Eie, Sujin, Terasawa, Toshio, Akahori, Takuya, Oyama, Tomoaki, Hirota, Tomoya, Yonekura, Yoshinori, Enoto, Teruaki, Sekido, Mamoru, Takefuji, Kazuhiro, Misawa, Hiroaki, Tsuchiya, Fuminori, Kisaka, Shota, Aoki, Takahiro, Honma, Mareki

“…Abstract We report on the multi-frequency multi-epoch radio observations of the magnetar XTE J1810−197, which exhibited a radio outburst from 2018 December…”
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Detection of a bright burst from the repeating fast radio burst 20201124A at 2 GHz by 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

“…Abstract We present a detection of a bright burst from the fast radio burst (FRB) 20201124A, which is one of the most active repeating FRBs, based on S-band…”
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Near-infrared monitoring of the accretion outburst in the massive young stellar object S255-NIRS3 by Uchiyama, Mizuho, Yamashita, Takuya, Sugiyama, Koichiro, Nakaoka, Tatsuya, Kawabata, Miho, Itoh, Ryosuke, Yamanaka, Masayuki, Akitaya, Hiroshi, Kawabata, Koji, Yonekura, Yoshinori, Saito, Yu, Motogi, Kazuhito, Fujisawa, Kenta

“…Abstract We followed up the massive young stellar object S255-NIRS3 (= S255-IRS1b) during its recent accretion outburst event in the $K_{\rm s}$ band with…”
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The Intrinsic Structure of Sagittarius A at 1.3 cm and 7 mm by 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

“…Abstract Sagittarius A* (Sgr A*), the Galactic Center supermassive black hole (SMBH), is one of the best targets in which to resolve the innermost region of an…”
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The Astrometric Animation of Water Masers toward the Mira Variable BX Cam by Xu, Shuangjing, Imai, Hiroshi, Yun, Youngjoo, Zhang, Bo, Rioja, María J., Dodson, Richard, Cho, Se-Hyung, Kim, Jaeheon, Cui, Lang, Sobolev, Andrey M., Chibueze, James O., Kim, Dong-Jin, Amada, Kei, Nakashima, Jun-ichi, Orosz, Gabor, Oyadomari, Miyako, Oh, Sejin, Yonekura, Yoshinori, Sun, Yan, Mai, Xiaofeng, Zhang, Jingdong, Wen, Shiming, Jung, Taehyun

“…Abstract We report very long baseline interferometry (VLBI) monitoring observations of the 22 GHz water (H 2 O) masers around the Mira variable BX Cam, which…”
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The Yamaguchi Interferometer by Fujisawa, Kenta, Aoki, Takahiro, Kanazawa, Sho, Akimoto, Masanori, Ogura, Tatsuya, Mori, Kurena, Niinuma, Kotaro, Motogi, Kazuhito, Sawada-Satoh, Satoko, Takefuji, Kazuhiro, Ogawa, Hideo, Kimura, Kimihiro, Yonekura, Yoshinori, Honma, Mareki

“…Abstract We report on the Yamaguchi Interferometer (YI), a one-baseline radio interferometer consisting of two radio telescopes with diameters of 32 m and 34…”
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SHORT-TERM RADIO VARIABILITY AND PARSEC-SCALE STRUCTURE IN A GAMMA-RAY NARROW-LINE SEYFERT 1 GALAXY 1H 0323+342 by WAJIMA, KIYOAKI, Fujisawa, Kenta, Hayashida, Masaaki, Isobe, Naoki, Ishida, Takafumi, Yonekura, Yoshinori

“…We made simultaneous single-dish and very long baseline interferometer (VLBI) observations of a narrow-line Seyfert 1 galaxy 1H 323+342, showing gamma-ray…”
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Millimeter methanol emission in the high-mass young stellar object G24.33+0.14 by Hirota, Tomoya, Wolak, Pawel, Hunter, Todd R, Brogan, Crystal L, Bartkiewicz, Anna, Durjasz, Michal, Kobak, Agnieszka, Olech, Mateusz, Szymczak, Marian, Burns, Ross A, Aberfelds, Artis, Baek, Giseon, Brand, Jan, Breen, Shari, Byun, Do-Young, Caratti o Garatti, Alessio, Chen, Xi, Chibueze, James O, Cyganowski, Claudia, Eislöffel, Jochen, Ellingsen, Simon, Hirano, Naomi, Hu, Bo, Kang, Ji-hyun, Kim, Jeong-Sook, Kim, Jungha, Kim, Kee-Tae, Kim, Mi Kyoung, Kramer, Busaba, Lee, Jeong-Eun, Linz, Hendrik, Liu, Tie, MacLeod, Gordon, McCarthy, Tiege P, Menten, Karl, Motogi, Kazuhito, Oh, Chung-Sik, Orosz, Gabor, Sobolev, Andrey M, Stecklum, Bringfried, Sugiyama, Koichiro, Sunada, Kazuyoshi, Uscanga, Lucero, van den Heever, Fanie, Volvach, Alexandr E, Volvach, Larisa N, Wu, Yuan Wei, Yonekura, Yoshinori

“…Abstract In 2019 September, a sudden flare of the 6.7 GHz methanol maser was observed toward the high-mass young stellar object (HMYSO) G24.33+0.14. This may…”
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The shortest periodic and flaring flux variability of a methanol maser emission at 6.7 GHz in G 014.23−00.50 by Sugiyama, Koichiro, Nagase, Katsura, Yonekura, Yoshinori, Momose, Munetake, Yasui, Yasutaka, Saito, Yu, Motogi, Kazuhito, Honma, Mareki, Hachisuka, Kazuya, Matsumoto, Naoko, Uchiyama, Mizuho, Fujisawa, Kenta

“…Abstract We detected flaring flux variability that regularly occurred with a period of 23.9 d on a 6.7 GHz methanol maser emission at Vlsr = 25.30 km s−1 in…”
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Measuring the impact of Indonesian antennas on global geodetic VLBI network by Huda, Ibnu Nurul, Hidayat, Taufiq, Dermawan, Budi, Lambert, Sébastien, Liu, Niu, Leon, Stéphane, Fujisawa, Kenta, Yonekura, Yoshinori, Sugiyama, Koichiro, Hirota, Tomoya, Premadi, Premana W., Breton, Rene, Minh, Young-Chol, Jaroenjittichai, Phrudth, Wijaya, Dudy, Pradipta, Dhota, Putri, Nabila S. E., Ramadhan, Sahlan, Puspitarini, Lucky, Wulandari, Hesti R. T., Hafieduddin, Mohammad

“…In the near future, two radio telescopes will be installed in the Indonesian region. These telescopes are proposed to be integrated into the existing Very Long…”
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Accelerating a water maser face-on jet from a high mass young stellar object by Motogi, Kazuhito, Sorai, Kazuo, Honma, Mareki, Hirota, Tomoya, Hachisuka, Kazuya, Niinuma, Kotaro, Sugiyama, Koichiro, Yonekura, Yoshinori, Fujisawa, Kenta

“…Abstract We report on long-term single-dish and VLBI monitoring for intermittent flare activities of a dominant blue-shifted H2O maser associated with a…”
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WIDE-BAND SPECTRA OF GIANT RADIO PULSES FROM THE CRAB PULSAR by Mikami, Ryo, Asano, Katsuaki, Tanaka, Shuta J., Kisaka, Shota, Sekido, Mamoru, Takefuji, Kazuhiro, Takeuchi, Hiroshi, Misawa, Hiroaki, Tsuchiya, Fuminori, Kita, Hajime, Yonekura, Yoshinori, Terasawa, Toshio

“…ABSTRACT We present the results of the simultaneous observation of giant radio pulses (GRPs) from the Crab pulsar at 0.3, 1.6, 2.2, 6.7, and 8.4 GHz with four…”
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A Face-on Accretion System in High-mass Star Formation: Possible Dusty Infall Streams within 100 AU by Motogi, Kazuhito, Hirota, Tomoya, Sorai, Kazuo, Yonekura, Yoshinori, Sugiyama, Koichiro, Honma, Mareki, Niinuma, Kotaro, Hachisuka, Kazuya, Fujisawa, Kenta, Walsh, Andrew J.

“…We report on interferometric observations of a face-on accretion system around the high-mass young stellar object, G353.273+0.641. The innermost accretion…”
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A comparative study of amplitude calibrations for the East Asia VLBI Network: A priori and template spectrum methods by Cho, Ilje, Jung, Taehyun, Zhao, Guang-Yao, Akiyama, Kazunori, Sawada-Satoh, Satoko, Kino, Motoki, Byun, Do-Young, Sohn, Bong Won, Shibata, Katsunori M., Hirota, Tomoya, Niinuma, Kotaro, Yonekura, Yoshinori, Fujisawa, Kenta, Oyama, Tomoaki

“…Abstract We present the results of a comparative study of amplitude calibrations for the East Asia VLBI Network (EAVN) at 22 and 43 GHz using two different…”
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The Hitachi and Takahagi 32 m radio telescopes: Upgrade of the antennas from satellite communication to radio astronomy by Yonekura, Yoshinori, Saito, Yu, Sugiyama, Koichiro, Soon, Kang Lou, Momose, Munetake, Yokosawa, Masayoshi, Ogawa, Hideo, Kimura, Kimihiro, Abe, Yasuhiro, Nishimura, Atsushi, Hasegawa, Yutaka, Fujisawa, Kenta, Ohyama, Tomoaki, Kono, Yusuke, Miyamoto, Yusuke, Sawada-Satoh, Satoko, Kobayashi, Hideyuki, Kawaguchi, Noriyuki, Honma, Mareki, Shibata, Katsunori M., Sato, Katsuhisa, Ueno, Yuji, Jike, Takaaki, Tamura, Yoshiaki, Hirota, Tomoya, Miyazaki, Atsushi, Niinuma, Kotaro, Sorai, Kazuo, Takaba, Hiroshi, Hachisuka, Kazuya, Kondo, Tetsuro, Sekido, Mamoru, Murata, Yasuhiro, Nakai, Naomasa, Omodaka, Toshihiro

“…Abstract The Hitachi and Takahagi 32 m radio telescopes (former satellite communication antennas) were so upgraded as to work at 6, 8, and 22 GHz. We developed…”
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VERA and ALMA observations of the H2O supermaser burst in Orion KL by Hirota, Tomoya, Tsuboi, Masato, Kurono, Yasutaka, Fujisawa, Kenta, Honma, Mareki, Kim, Mi Kyoung, Imai, Hiroshi, Yonekura, Yoshinori

“…Abstract The 22 GHz H2O maser in Orion KL has shown extraordinary burst events in 1979–1985 and 1998–1999, sometimes called supermaser. We have conducted…”
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Super-Resolved Image of M87 Observed with East Asian VLBI Network by Tazaki, Fumie, Cui, Yuzhu, Hada, Kazuhiro, Kino, Motoki, Cho, Ilje, Zhao, Guang-Yao, Akiyama, Kazunori, Mizuno, Yosuke, Ro, Hyunwook, Honma, Mareki, Lu, Ru-Sen, Shen, Zhi-Qiang, Cui, Lang, Yonekura, Yoshinori

“…Obtaining high-resolution images at centimeter-or-longer wavelengths is vital for understanding the physics of jets. We reconstructed images from the M87 22…”
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The AMANOGAWA-2SB Galactic Plane Survey I. Data on the Galactic Equator by Yoda, Takahiro, Handa, Toshihiro, Kohno, Kotaro, Nakajima, Taku, Kaiden, Masahiro, Yonekura, Yoshinori, Ogawa, Hideo, Morino, Jun-ichi, Dobashi, Kazuhito

“…Using a waveguide-type sideband-separating receiver (2SB receiver) on the Tokyo-NRO 60-cm telescope (renamed the AMANOGAWA telescope), we carried out…”
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Z45: A new 45-GHz band dual-polarization HEMT receiver for the NRO 45-m radio telescope by Nakamura, Fumitaka, Ogawa, Hideo, Yonekura, Yoshinori, Kimura, Kimihiko, Okada, Nozomi, Kozu, Minato, Hasegawa, Yutaka, Tokuda, Kazuki, Ochiai, Tetsu, Mizuno, Izumi, Dobashi, Kazuhito, Shimoikura, Tomomi, Kameno, Seiji, Taniguchi, Kotomi, Shinnaga, Hiroko, Takano, Shuro, Kawabe, Ryohei, Nakajima, Taku, Iono, Daisuke, Kuno, Nario, Onishi, Toshikazu, Momose, Munetake, Yamamoto, Satoshi

“…We developed a dual-linear-polarization HEMT (High Electron Mobility Transistor) amplifier receiver system of the 45-GHz band (hereafter Z45), and installed it…”
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