The intrinsic structure of Sagittarius A* at 1.3 cm and 7 mm
Ilje et al.
ApJ, in press
Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 2020
Acciari et al.
2022, MNRAS, 510, 2344
Measuring the impact of Indonesian antennas on global geodetic VLBI network
Huda et al.
2021, Experimental Astronomy, 52, 141
インドネシアで行われている電波望遠鏡建設計画に参加している。
A VLA Survey of Late-time Radio Emission from Superluminous Supernovae and the Host Galaxies
Hatsukade et al.
2021, ApJ, 922, 17
East Asian VLBI Network observations of active galactic nuclei jets: imaging with KaVA+Tianma+Nanshan
Cui et al.
2021, RAA, 21, 205
東アジアVLBI観測網（EAVN）を用いて行われた研究。
Morphological Transition of the Compact Radio Lobe in 3C 84 via the Strong Jet-Cloud Collision
Kino et al.
2021, ApJ, 920, 24
Origins of the Long-term Variability of the Near-infrared Emission of the Black Hole X-Ray Binary GRS 1915+105 in the X-Ray Low Luminous State
Imazato et al.
2021, ApJ, 916, 114
山口干渉計のデータが用いられた初の査読論文。主著者は広島大学の今里さん。
Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign
EHT MWL Science Working Group
2021, ApJ, 911, 11
EHTの研究にも一部分参加している（新沼）。
Variability of Late-time Radio Emission in the Superluminous Supernova PTF10hgi
Hatsukade et al.
2021, ApJ, 911, 1
Observations of V404 Cygni during the 2015 outburst by the Nasu telescope array at 1.4 GHz
Asuma et al.
2020, PASJ, 72, 77
Near-infrared monitoring of the accretion outburst in the massive young stellar object S255-NIRS3
Uchiyama et al.
2020, PASJ, 72, 4
「降着バースト」という現象が注目を浴びている。日本のグループ（茨城大学・山口大学）が、世界で初めてこの現象をメタノールメーザーの観測で検出に成功した。
Millimeter-VLBI Detection and Imaging of the Gravitationally Lensed γ-Ray Blazar JVAS B0218+357
Hada et al.
2020, ApJ, 901, 2
Salt, Hot Water, and Silicon Compounds Tracing Massive Twin Disks
Tanaka et al.
2020, ApJ, 900, 2
Magnetic Field Structure of Orion Source I
Hirota et al.
2020, ApJ, 896, 157
Multiple Outflows in the High-mass Cluster-forming Region G25.82-0.17
Kim et al.
2020, ApJ, 896, 127
Spatially resolved molecular gas properties of host galaxy of Type I superluminous supernova SN 2017egm
Hatsukade et al.
2020, PASJ, 72, 6
The First VERA Astrometry Catalog
VERA Collaboration
2020, PASJ, 72, 50
Development of the multi-band simultaneous observation system of the Nobeyama 45-m Telescope in HINOTORI (Hybrid Installation project in NObeyama, Triple-band ORIented)
Okada et al.
2020, SPIE, 11453, 49
Kinematics of the M87 Jet in the Collimation Zone: Gradual Acceleration and Velocity Stratification
Park et al.
2019, ApJ, 887, 147
Stable Radio Core of the Blazar Mrk 501 during High-energy Active State in 2012
Koyama et al.
2019, ApJ, 884, 132
ALMA Observations of Molecular Gas in the Host Galaxy of AT2018cow
Morokuma-Matsui et al.
2019, ApJ, 879, 13
The First Bird’s-eye View of a Gravitationally Unstable Accretion Disk in High-mass Star Formation
Motogi et al.
2019, ApJ, 877, 25
「元木天体」の研究結果。大質量星の形成の様子が「見えて」いる。
Jet kinematics of the quasar 4C+21.35 from observations with the KaVA very long baseline interferometry array
Lee et al.
2019, MNRAS, 486, 2412
Stellar Overdensity in the Local Arm in Gaia DR2
Miyachi, Yusuke, Sakai, Nobuyuki, Kawata, Daisuke, Baba, Junichi, Honma, Mareki, Matsunaga, Noriyuki, Fujisawa, Kenta
2019, ApJ, 882, 48
山口大学の学生（宮地君）が行った研究（山口の望遠鏡は使われていない）。
A balloon-borne very long baseline interferometry experiment in the stratosphere: Systems design and developments
Doi, Akihiro et al. (Fujisawa 31th in 36)
2019, AdSpR, 63, 779
Obscured Star Formation in the Host Galaxies of Superluminous Supernovae
Hatsukade, B., Tominaga, N., Hayashi, M., Konishi, M., Matsuda, Y., Morokuma, T., Morokuma-Matsui, K., Motogi, K., Niinuma, K., Tamura, Y.
2018, ApJ, 857, 72
Subaru Hyper Suprime-Cam Survey for an optical counterpart of GW170817
Tominaga, Nozomu et al. (Fujisawa 22番目)
2018, PASJ, 70, 28
Disk-driven rotating bipolar outflow in Orion Source I
Hirota, Tomoya, Machida, Masahiro N., Matsushita, Yuko, Motogi, Kazuhito, Matsumoto, Naoko, Kim, Mi Kyoung, Burns, Ross A., Honma, Mareki
2017, Nature Astronomy, 1, 146
Trigonometric distance and proper motions of H2O maser bowshocks in AFGL 5142
Burns, R. A., Handa, T., Imai, H., Nagayama, T., Omodaka, T., Hirota, T., Motogi, K., van Langevelde, H. J., Baan, W. A.
2017, MNRAS, 467, 2367
A comparative study of amplitude calibrations for the East Asia VLBI Network: A priori and template spectrum methods
Cho, Ilje et al. (Niinuma 11番目、Fujisawa 13番目)
2017, PASJ, 69, 87
Development of the Phase-up Technology of the Radio Telescopes: 6.7 GHz Methanol Maser Observations with Phased Hitachi 32 m and Takahagi 32 m Radio Telescopes
Takefuji, K., Sugiyama, K., Yonekura, Y., Saito, T., Fujisawa, K., Kondo, T.
2017, PASJP, 129, 114504
A Face-on Accretion System in High-mass Star Formation: Possible Dusty Infall Streams within 100 AU
Motogi, Kazuhito, Hirota, Tomoya, Sorai, Kazuo, Yonekura, Yoshinori, Sugiyama, Koichiro, Honma, Mareki, Niinuma, Kotaro, Hachisuka, Kazuya, Fujisawa, Kenta, Walsh, Andrew J.
2017, ApJ, 849, 23
OISTER optical and near-infrared monitoring observations of peculiar radio-loud active galactic nucleus SDSS J110006.07+442144.3
Morokuma et al. (Fujisawa 19番目, Niinuma 54番目)
2017, PASJ, 69, 82
The shortest periodic and flaring flux variability of a methanol maser emission at 6.7 GHz in G 014.23-00.50
Sugiyama, Koichiro, Nagase, Katsura, Yonekura, Yoshinori, Momose, Munetake, Yasui, Yasutaka, Saito, Yu, Motogi, Kazuhito, Honma, Mareki, Hachisuka, Kazuya, Matsumoto, Naoko, Uchiyama, Mizuho, Fujisawa, Kenta
2017, PASJ, 69, 59
J-GEM follow-up observations of the gravitational wave source GW151226*
Yoshida, Michitoshi et al. (Fujisawa 33番目)
2017, PASJ, 69, 12
ALMA Band 8 Continuum Emission from Orion Source I
Hirota, Tomoya, Machida, Masahiro N., Matsushita, Yuko, Motogi, Kazuhito, Matsumoto, Naoko, Kim, Mi Kyoung, Burns, Ross A., Honma, Mareki
2016, ApJ, 833, 238
Molecular jet emission and a spectroscopic survey of S235AB
Burns, R. A., Handa, T., Hirota, T., Motogi, K., Imai, H., Omodaka, T.
2016, A&A, 586, A34
The Hitachi and Takahagi 32 m radio telescopes: Upgrade of the antennas from satellite communication to radio astronomy
Yonekura, Yoshinori et al. (Fujisawa 12番目, Niinuma 27番目)
2016, PASJ, 68, 74
Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. II. Internal proper motion measurement in G006.79-00.25
Sugiyama, Koichiro, Fujisawa, Kenta et al. (Motogi 5番目, Niinuma 19番目)
2016, PASJ, 68, 72
The discovery of new AGN candidates within the field of Fermi unassociated γ-ray sources
Fujinaga, Yoshitaka, Niinuma, Kotaro, Kimura, Atsushi, Fujisawa, Kenta, Oyama, Tomoaki, Mizuno, Syota, Kono, Yusuke, Takemura, Shinji, Sawada-Satoh, Satoko, Akutagawa, Kengo, Sugiyama, Koichiro, Motogi, Kazuhito, Fukuzaki, Yoshihiro
2016, PASJ, 68, 70
Accelerating a water maser face-on jet from a high mass young stellar object
Motogi, Kazuhito, Sorai, Kazuo, Honma, Mareki, Hirota, Tomoya, Hachisuka, Kazuya, Niinuma, Kotaro, Sugiyama, Koichiro, Yonekura, Yoshinori, Fujisawa, Kenta
2016, PASJ, 68, 69
J-GEM follow-up observations to search for an optical counterpart of the first gravitational wave source GW150914
Morokuma, Tomoki et al. (Fujisawa 8番目)
2016, PASJ, 68, 6
Localization and Broadband Follow-up of the Gravitational-wave Transient GW150914
Abbott et al. (Fujisawa 1000番目あたり)
2016, ApJ, 826, 13
A flare of methanol maser in S255
Fujisawa, Kenta, Yonekura, Yoshinori, Sugiyama, Koichiro, Horiuchi, Hikari, Hayashi, Takehiro, Hachisuka, Kazuya, Matsumoto, Naoko, Niinuma, Kotaro
2015, ATel, 8286
First Parallax Measurements Towards a 6.7 GHz Methanol Maser with the Australian Long Baseline Array - Distance to G 339.884-1.259.
Krishnan, V. et al. (Fujisawa 15番目)
2015, ApJ, 805, 129
Observations of the bursting activity of the 6.7 GHz methanol maser in G33.641-0.228
Fujisawa, Kenta, Aoki, Nozomu, Nagadomi, Yoshito, Kimura, Saki, Shimomura, Tadashi, Takase, Genta, Sugiyama, Koichiro, Motogi, Kazuhito, Niinuma, Kotaro, Hirota, Tomoya, Yonekura, Yoshinori
2014, PASJ, 66, 109
VERA and ALMA observations of the H2O supermaser burst in Orion KL
Hirota, Tomoya, Tsuboi, Masato, Kurono, Yasutaka, Fujisawa, Kenta, Honma, Mareki, Kim, Mi Kyoung, Imai, Hiroshi, Yonekura, Yoshinori
2014, PASJ, 66, 106
VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability
Niinuma, Kotaro, Lee, Sang-Sung, Kino, Motoki, Sohn, Bong Won, Akiyama, Kazunori, Zhao, Guang-Yao, Sawada-Satoh, Satoko, Trippe, Sascha, Hada, Kazuhiro, Jung, Taehyun, and 62 coauthors
2014, PASJ, 66, 103
Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. I. VLBI images of the first epoch of observations
Fujisawa, Kenta, Sugiyama, Koichiro, Motogi, Kazuhito, Hachisuka, Kazuya, Yonekura, Yoshinori, Sawada-Satoh, Satoko, Matsumoto, Naoko, Sorai, Kazuo, Momose, Munetake, Saito, Yu, and 19 coauthors
2014, PASJ, 66, 31
Short-term Radio Variability and Parsec-scale Structure in a Gamma-Ray Narrow-line Seyfert 1 Galaxy 1H 0323+342
Wajima, Kiyoaki, Fujisawa, Kenta, Hayashida, Masaaki, Isobe, Naoki, Ishida, Takafumi, Yonekura, Yoshinori
2014, ApJ, 781, 75
Rotating and infalling motion around the high-mass young stellar object Cepheus A-HW2 observed with the methanol maser at 6.7 GHz
Sugiyama, K., Fujisawa, K., Doi, A., Honma, M., Kobayashi, H., Murata, Y., Motogi, K., Niinuma, K., Ogawa, H., Wajima, K., and 2 coauthors
2014, A&A, 562A, 82
Internal Motion of 6.7-GHz Methanol Masers in H II Region S269
Sawada-Satoh, Satoko, Fujisawa, Kenta, Sugiyama, Koichiro, Wajima, Kiyoaki, Honma, Mareki
2013, PASJ, 65, 79
Multifrequency VLBI Observations of the Broad Absorption Line Quasar J1020+4320: Recently Restarted Jet Activity?
Doi, Akihiro, Murata, Yasuhiro, Mochizuki, Nanako, Takeuchi, Hiroshi, Asada, Keiichi, Hayashi, Takayuki J., Nagai, Hiroshi, Shibata, Katsunori M., Oyama, Tomoaki, Jike, Takaaki, and 7 coauthors
2013, PASJ, 65, 57
Very Long Baseline Array Imaging of Parsec-scale Radio Emissions in Nearby Radio-quiet Narrow-line Seyfert 1 Galaxies
Doi, Akihiro, Asada, Keiichi, Fujisawa, Kenta, Nagai, Hiroshi, Hagiwara, Yoshiaki, Wajima, Kiyoaki, Inoue, Makoto
2013, ApJ, 765, 69
Intermittent maser flare around the high-mass young stellar object G353.273 + 0.641 - II. Detection of a radio and molecular jet
Motogi, K., Sorai, K., Niinuma, K., Sugiyama, K., Honma, M., Fujisawa, K.
2013, MNRAS, 428, 349
Star Formation in the Molecular Cloud Associated with the Monkey Head Nebula: Sequential or Spontaneous?
Chibueze, James O., Imura, Kenji, Omodaka, Toshihiro, Handa, Toshihiro, Nagayama, Takumi, Fujisawa, Kenta, Sunada, Kazuyoshi, Nakano, Makoto, Kamezaki, Tatsuya, Yamaguchi, Yoshiyuki, Sekido, Mamoru
2013, ApJ, 762, 17
Possible Detection of Apparent Superluminal Inward Motion in Markarian 421 after the Giant X-Ray Flare in 2010 February
Niinuma, K., Kino, M., Nagai, H., Isobe, N., Gabanyi, K. E., Hada, K., Koyama, S., Asada, K., Oyama, T., Fujisawa, K.
2012, ApJ, 759, 84
An Intrinsic Short-Term Radio Variability Observed in PKS 1510-089
Kadota, Akiko, Fujisawa, Kenta, Sawada-Satoh, Satoko, Wajima, Kiyoaki, Doi, Akihiro
2012, PASJ, 64, 109
Multi-Wavelength Photometric and Polarimetric Observations of the Outburst of 3C 454.3 in 2009 December
Sasada, Mahito, Uemura, Makoto, Fukazawa, Yasushi, Kawabata, Koji S., Itoh, Ryosuke, Sakon, Itsuki, Fujisawa, Kenta, Kadota, Akiko, Ohsugi, Takashi, Yoshida, Michitoshi, and 4 coauthors
2012, PASJ, 64, 58
Parallaxes and proper motions of interstellar masers toward the Cygnus X star-forming complex. I. Membership of the Cygnus X region
Rygl, K. L. J., Brunthaler, A., Sanna, A., Menten, K. M., Reid, M. J., van Langevelde, H. J., Honma, M., Torstensson, K. J. E., Fujisawa, K.
2012, A&A, 539A, 79
Bursting Activity in a High-Mass Star-Forming Region G33.64-0.21 Observed with the 6.7GHz Methanol Maser
Fujisawa, Kenta, Sugiyama, Koichiro, Aoki, Nozomu, Hirota, Tomoya, Mochizuki, Nanako, Doi, Akihiro, Honma, Mareki, Kobayashi, Hideyuki, Kawaguchi, Noriyuki, Ogawa, Hideo, and 2 coauthors
2012, PASJ, 64, 17