Publications (38)
230 GHz VLBI observations of M87: event-horizon-scale structure at the enhanced very-high-energy $\rm γ$-ray state in 2012
Kazunori Akiyama, Ru-Sen Lu, Vincent L. Fish +45
Multifrequency VLBI Observations of the Broad Absorption Line Quasar J1020+4320: Recently Restarted Jet Activity?
Akihiro Doi, Yasuhiro Murata, Nanako Mochizuki +14
First-generation Science Cases for Ground-based Terahertz Telescopes
Hiroyuki Hirashita, Patrick M. Koch, Satoki Matsushita +33
Detection of intrinsic source structure at ~3 Schwarzschild radii with Millimeter-VLBI observations of SAGITTARIUS A*
Ru-Sen Lu, Thomas P. Krichbaum, Alan L. Roy +53
Parabolic Jets from the Spinning Black Hole in M87
Masanori Nakamura, Keiichi Asada, Kazuhiro Hada +18
Very Long Baseline Array Imaging of Parsec-scale Jet Structures in Radio-loud Narrow-line Seyfert 1 Galaxies
Akihiro Doi, Keiichi Asada, Hiroshi Nagai
VLBI Monitoring of 3C 84 (NGC 1275) in Early Phase of the 2005 Outburst
Hiroshi Nagai, Kenta Suzuki, Keiichi Asada +11
The 1.4 mm core of Centaurus A: First VLBI results with the South Pole Telescope
Junhan Kim, Daniel P. Marrone, Alan L. Roy +27
Time Variation of Rotation Measure Gradient in 3C 273 Jet
Keiichi Asada, Makoto Inoue, Seiji Kameno +1
Multifrequency Polarimetry of the Nrao 140 Jet: Possible Detection of a Helical Magnetic Field and Constraints on its Pitch Angle
Keiichi Asada, Makoto Inoue, Masanori Nakamura +2
A new era of sub-millimeter GRB afterglow follow-ups with the Greenland Telescope
Yuji Urata, Kuiyun Huang, Keiichi Asada +3
VLBI and Single Dish Monitoring of 3C84 in the Period of 2009-2011
Hiroshi Nagai, Monica Orienti, Motoki Kino +13
Superresolution Interferometric Imaging with Sparse Modeling Using Total Squared Variation --- Application to Imaging the Black Hole Shadow
Kazuki Kuramochi, Kazunori Akiyama, Shiro Ikeda +5
Structural Transition in the NGC 6251 Jet: An Interplay with the Supermassive Black Hole and Its Host Galaxy
Chih-Yin Tseng, Keiichi Asada, Masanori Nakamura +3
Observable Emission Features of Black Hole GRMHD Jets on Event Horizon Scales
Hung-Yi Pu, Kinwah Wu, Ziri Younsi +3
Resolved Magnetic-Field Structure and Variability Near the Event Horizon of Sagittarius A*
Michael D. Johnson, Vincent L. Fish, Sheperd S. Doeleman +45
Persistent Asymmetric Structure of Sagittarius A* on Event Horizon Scales
Vincent L. Fish, Michael D. Johnson, Sheperd S. Doeleman +69
Kiloparsec-scale Radio Structures in Narrow-line Seyfert 1 Galaxies
Akihiro Doi, Hiroshi Nagira, Nozomu Kawakatu +3
The Greenland Telescope: Antenna Retrofit Status and Future Plans
Philippe Raffin, Paul T. P. Ho, Keiichi Asada +32
The Effects of Accretion Flow Dynamics on the Black Hole Shadow of Sagittarius A$^{*}$
Hung-Yi Pu, Kazunori Akiyama, Keiichi Asada
The Parabolic Jet Structure in M87 as a Magnetohydrodynamic Nozzle
Masanori Nakamura, Keiichi Asada
3.5-Year Monitoring of 225 GHz Opacity at the Summit of Greenland
Satoki Matsushita, Keiichi Asada, Pierre L. Martin-Cocher +6
High-Angular-Resolution and High-Sensitivity Science Enabled by Beamformed ALMA
Vincent Fish, Walter Alef, James Anderson +66
VLBI observations of the most radio-loud, narrow-line quasar SDSS J094857.3+002225
Akihiro Doi, Hiroshi Nagai, Keiichi Asada +3
Very Long Baseline Array Imaging of Parsec-scale Radio Emissions in Nearby Radio-quiet Narrow-line Seyfert 1 Galaxies
Akihiro Doi, Keiichi Asada, Kenta Fujisawa +4
The Structure of the M87 Jet: A Transition from Parabolic to Conical Streamlines
Keiichi Asada, Masanori Nakamura
Collimation, Acceleration and Recollimation Shock in the Jet of Gamma-Ray-emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy 1H 0323+342
Kazuhiro Hada, Akihiro Doi, Kiyoaki Wajima +6
Resolving the Geometry of the Innermost Relativistic Jets in Active Galactic Nuclei
Juan-Carlos Algaba, Masanori Nakamura, Keiichi Asada +1
Electronics Instrumentation for the Greenland Telescope
Derek Kubo, Chih-Chiang Han, Hiroaki Nishioka +37
Exploring the central sub-pc region of the γ-ray bright radio galaxy 3C 84 with the VLBA at 43 GHz in the period of 2002-2008
Kenta Suzuki, Hiroshi Nagai, Motoki Kino +13
A Helical Magnetic Field in the Jet of 3C 273
Keiichi Asada, Makoto Inoue, Yutaka Uchida +4
Resolving the rotation measure of the M87 jet on kilo-parsec scales
Juan-Carlos Algaba, Keiichi Asada, Masanori Nakamura
A New Test for the Absorption Mechanism of GPS Radio Sources Using Polarization Properties
Mutsumi Mutoh, Makoto Inoue, Seiji Kameno +3
Lepton acceleration in the vicinity of the event horizon: Very-high-energy emissions from super-massive black holes
Kouichi Hirotani, Hung-Yi Pu, Lupin Chun-Che Lin +5
Steady General Relativistic Magnetohydrodynamic Inflow/Outflow Solution along Large-Scale Magnetic Fields that Thread a Rotating Black Hole
Hung-Yi Pu, Masanori Nakamura, Kouichi Hirotani +3
Discovery of Sub- to Superluminal Motions in the M87 Jet: An Implication of the Acceleration from Sub-relativistic to Relativistic Speeds
Keiichi Asada, Masanori Nakamura, Akihiro Doi +2
Resolving the Innermost Geometry of Relativistic Jets in Active Galactic Nuclei
Juan Carlos Algaba, Masanori Nakamura, Keiichi Asada +1
The Kinematic and Spectral Ages of the Compact Radio Source CTD 93
Hiroshi Nagai, Makoto Inoue, Keiichi Asada +2