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Papers in refereed journals

• Huda et al., 2021, Exp Astron. https://doi.org/10.1007/s10686-021-09773-1, "Measuring the impact of Indonesian antennas on global geodetic VLBI network"
• Cui et al., 2021, Research in Astronomy and Astrophysics, "East Asian VLBI Network Observations of Active Galactic Nuclei Jets: Imaging with KaVA+Tianma+Nanshan"
• Enoto et al., 2021, Science, 372, Issue 6538, pp. 187, "Enhanced x-ray emission coinciding with giant radio pulses from the Crab Pulsar"
• The EHT MWL Science Working Group, 2021, ApJL, 911, L11, "Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign"
• Stecklum et al., 2021, A&A, 646, A161, "Infrared observations of the flaring maser source G358.93-0.03: SOFIA confirms an accretion burst from a massive young stellar object"
• Hada et al., 2020, AJ, 901, 2, "Millimeter-VLBI Detection and Imaging of the Gravitationally Lensed Gamma-Ray Blazar JVAS B0218+357"
• Imai et al., 2020, PASJ, 72, 58, "FLASHING: New high-velocity H2O masers in IRAS 18286-0959"
• Uchiyama et al., 2020, PASJ, 72, 4, "Near-infrared monitoring of the accretion outburst in the massive young stellar object S255-NIRS3"
• Burns et al., 2020, NatAst, 4, 506, "A heatwave of accretion energy traced by masers in the G358-MM1 high-mass protostar"
• Okada et al., 2020, PASJ, 72, 2, "Development of a 22/43 GHz-band quasi-optical perforated plate and dual-band observation system of the Nobeyama 45 m telescope"
• Nagoshi et al., 2019, PASJ, 71, 80, "The Galactic center lobe filled with thermal plasma"
• MacLeod et al., 2019, MNRAS, 489, 3981, "Detection of new methanol maser transitions associated with G358.93-0.03"
• An et al., 2018, NatAst, 2, 118, "Capabilities and prospects of the East Asia Very Long Baseline Interferometry Network"
• Tomonaga et al., 2018, PASJ, 70, 28, "Subaru Hyper Suprime-Cam Survey for an optical counterpart of GW170817"
• Sugiyama et al., 2017, PASJ, 69, 59, "The shortest periodic and flaring flux variability of a methanol maser emission at 6.7 GHz in G 014.23-00.50"
• Morokuma et al., 2017, PASJ, 69, 82, "OISTER optical and near-infrared monitoring observations of peculiar radio-loud active galactic nucleus SDSS J110006.07+442144.3"
• Yoshida. et al., 2017, PASJ, 69, 9, "J-GEM follow-up observations of the gravitational wave source GW151226*"
• Takefuji et al., 2017, PASP, 129, 4504, "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"
• Cho et al., 2017, PASJ, 69, 87, "A comparative study of amplitude calibrations for the East Asia VLBI Network: A priori and template spectrum methods"
• Takefuji et al., 2016, PASP, 128, 084502, "Very Long Baseline Interferometry Experiment on Giant Radio Pulses of Crab Pulsar toward Fast Radio Burst Detection"
• Yonekura et al., 2016, PASJ, 68, 74, "The Hitachi and Takahagi 32 m radio telescopes: Upgrade of the antennas from satellite communication to radio astronomy"
• Fujinaga et al., 2016, PASJ, 68, 70, "The discovery of new AGN candidates within the field of Fermi unassociated γ-ray sources"
• Sugiyama et al., 2016, PASJ, 68, 72, "Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. II. Internal proper motion measurement in G006.79-00.25"
• Abbott et al., 2016, ApJ, 826, L13, "Localization and Broadband Follow-up of the Gravitational-wave Transient GW150914"
• Morokuma et al., 2016, PASJ, 68, L9, "J-GEM follow-up observations to search for an optical counterpart of the first gravitational wave source GW150914"
• Motogi et al., 2016, PASJ, 68, 69, "Accelerating a water maser face-on jet from a high mass young stellar object"
• Doi et al., 2016, PASJ, 68, 73, "A radio detection survey of narrow-line Seyfert 1 galaxies using very long baseline interferometry at 22 GHz"
• Tsuboi et al., 2015, ApJL, 798, L6, "NO MICROWAVE FLARE OF SAGITTARIUS A* AROUND THE G2 PERIASTRON PASSING"
• Krishnam et al., 2015, ApJ, 805, 129, "First Parallax Measurements Towards a 6.7 GHz Methanol Maser with the Australian Long Baseline Array - Distance to G 339.884-1.259."
• Sugiyama et al., 2014, A&A, 562, A82, "Rotating and infalling motion around the high-mass young stellar object Cepheus A-HW2 observed with the methanol maser at 6.7 GHz"
• Fujisawa et al., 2014, PASJ, 66, 78, "Periodic flare of the 6.7-GHz methanol maser in IRAS 22198+6336"
• Wajima et al., 2014, ApJ, 781, 75, "Short-term Radio Variability and Parsec-scale Structure in a Gamma-Ray Narrow-line Seyfert 1 Galaxy 1H 0323+342"
• Fujisawa et al., 2014, PASJ, 66, 109, "Observations of the bursting activity of the 6.7 GHz methanol maser in G33.641-0.228"
• Fujisawa et al., 2014, PASJ, 66, 31, "Observations of 6.7 GHz methanol masers with East-Asian VLBI Network. I. VLBI images of the first epoch of observations"
• Doi et al., 2013, ApJ, 765, 69, "Very Long Baseline Array Imaging of Parsec-scale Radio Emissions in Nearby Radio-quiet Narrow-line Seyfert 1 Galaxies"
• Chibueze et al., 2013, ApJ, 762, 17, "Star Formation in the Molecular Cloud Associated with the Monkey Head Nebula: Sequential or Spontaneous?"
• Doi et al., 2013, PASJ, 65, 57, "Multifrequency VLBI Observations of the Broad Absorption Line Quasar J1020+4320: Recently Restarted Jet Activity?"
• Sawada-Satoh et al., 2013, PASJ, 65, 79, "Internal Motion of 6.7-GHz Methanol Masers in H II Region S269"
• Motogi et al., 2013, MNRAS, 428, 349, "Intermittent maser flare around the high-mass young stellar object G353.273 + 0.641 - II. Detection of a radio and molecular jet"
• Niinuma et al., 2012, ApJ, 759, 84, "Possible Detection of Apparent Superluminal Inward Motion in Markarian 421 after the Giant X-Ray Flare in 2010 February"
• Rygl et al., 2012, A&A, 539, A79, "Parallaxes and proper motions of interstellar masers toward the Cygnus X star-forming complex. I. Membership of the Cygnus X region"
• Fujisawa et al., 2012, PASJ, 64, 17, "Bursting Activity in a High-Mass Star-Forming Region G33.64-0.21 Observed with the 6.7GHz Methanol Maser"
• Sasada et al., 2012, PASJ, 64, 58, "Multi-Wavelength Photometric and Polarimetric Observations of the Outburst of 3C 454.3 in 2009 December"
• Kadota et al., 2012, PASJ, 64, 109, "An Intrinsic Short-Term Radio Variability Observed in PKS 1510-089"
• Hirota et al., 2011, ApJ, 739, L59, "Identification of Bursting Water Maser Features in Orion KL,2011"
• Matsumoto et al., 2011, PASJ, 63, 1345, "Astrometry of 6.7GHz Methanol Maser toward W 3(OH) with Japanese VLBI Network"
• Sugiyama, K. et al., 2011, PASJ, 63, 53, "Internal Proper Motions of Methanol Masers at 6.7GHz in Massive Star-Forming Region Onsala 1 "
• Nagai, H. et al., 2010, PASJ, 62, L11, "VLBI Monitoring of 3C 84 (NGC 1275) in Early Phase of the 2005 Outburst"
• Doi, A. et al., 2009, PASJ, 61, 1389, "VLBI Detections of Parsec-Scale Nonthermal Jets in Radio-Loud Broad Absorption Line Quasars"
• Nagayama, T. et al., 2008, PASJ, 60, 1069, "H2O Maser Outflow from the Red Supergiant Star NML Cygni Observed with Japanese VLBI Network"
• Ueda, K. et al., 2008, PASJ, 60, 1051, "Japanese VLBI Network Observations of SiO Masers in the M-Type Giant IRC - 10414"
• Sugiyama, K. et al., 2008, PASJ, 60, 1001, "A Synchronized Variation of the 6.7GHz Methanol Maser in Cepheus A"
• Motogi, K. et al., 2008, MNRAS, 390, 523, "Microstructure and kinematics of H2O masers in the massive star-forming region IRAS 06061+2151"
• Tsuboi, M. et al., 2008, PASJ, 60, 465, "The 2006 Radio Outbursts of a Microquasar Cygnus X-3: Observations and Data"
• Imai, H. et al., 2008, PASJ, 60, 55, "JVN observations of H2O masers around the evolved star IRAS22480+6002"
• Sugiyama, K. et al., 2008, PASJ, 60, 23, "Mapping Observations of 6.7 GHz Methanol Masers with the Japanese VLBI Network"
• Doi, A. et al., 2007, PASJ, 59, 703, "Japanese VLBI Network Observations of Radio-Loud Narrow-Line Seyfert 1 Galaxies"
• Imai, H. et al., 2006, PASJ, 58, 883, "A Collimated Jet and an Infalling-Rotating Disk in G192.16-3.84 Traced by H2O Maser Emission"
• Doi, A. et al., 2006, PASJ, 58, 777, "Bigradient Phase Referencing"

Proceedings

• Sugiyama, K. et al. 2009, Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technologies ASP Conference Series, Vol. 402, proceedings of the conference held 3-7 December, 2007, at ISAS/JAXA, Sagamihara, Kanagawa, Japan, p.392, "The Kinematics of the Methanol Maser at 6.7 GHz in Cepheus A"
• Sawada-Satoh, S. 2008, Proceedings of the 9th European VLBI Network Symposium on The role of VLBI in the Golden Age for Radio Astronomy and EVN Users Meeting. September 23-26, 2008. Bologna, Italy, p.92, "Imaging of 6.7-GHz Methanol Maser Sources with the Japanese VLBI Network"
• Fujisawa, K. 2008, Proceedings of the 9th European VLBI Network Symposium on The role of VLBI in the Golden Age for Radio Astronomy and EVN Users Meeting. September 23-26, 2008. Bologna, Italy., p.75, "Recent Results of the Japanese VLBI Network"
• Doi, A. et al. 2008, Proceedings of the 9th European VLBI Network Symposium on The role of VLBI in the Golden Age for Radio Astronomy and EVN Users Meeting. September 23-26, 2008. Bologna, Italy. p.73, "JVN observations of NLS1 galaxies and BAL quasars"
• Sugiyama, K. et al. 2007, Astrophysical Masers and their Environments, Proceedings of the International Astronomical Union, IAU Symposium, Volume 242, p. 176-177, "Japanese VLBI network observations of 6.7-GHz methanol masers II. Results"
• Doi, A. et al. 2007, Astrophysical Masers and their Environments, Proceedings of the International Astronomical Union, IAU Symposium, Volume 242, p. 148-149, "Japanese VLBI network observations of 6.7-GHz methanol masers I. Array"
• Doi, A. et al. 2006, Proceedings of the 8th European VLBI Network Symposium. September 26-29, 2006,Torun, Poland. p.71, "Japanese VLBI Network"

Last update : 2021-09-28