activity
20152021
most citedKinematics of the M87 jet in the collimation zone: gradual acceleration and velocity stratification

72 citations · 286 across the 19 of their papers we have counts for

collaborators

28 papers

astro-ph.HE2021

Morphological transition of the compact radio lobe in 3C84 via the strong jet-cloud collision

Motoki Kino, Kotaro Niinuma, Nozomu Kawakatu +8

We report multi-epoch Very Long Baseline Interferometric (VLBI) observations of the compact radio lobe in the radio galaxy 3C84 (NGC1275) during 2016 - 2020. The image sequence of…

astro-ph.GA2021

East Asian VLBI Network Observations of Active Galactic Nuclei Jets: Imaging with KaVA+Tianma+Nanshan

Yuzhu Cui, Kazuhiro Hada, Motoki Kino +74

The East Asian very-long-baseline interferometry (VLBI) Network (EAVN) is a rapidly evolving international VLBI array that is currently promoted under joint efforts among China, Ja…

astro-ph.HE202113 cited

Variability of Late-time Radio Emission in SLSN PTF10hgi

Bunyo Hatsukade, Nozomu Tominaga, Tomoki Morokuma +6

We report the time variability of the late-time radio emission in a Type-I superluminous supernova (SLSN), PTF10hgi, at z = 0.0987. The Karl G. Jansky Very Large Array 3 GHz observ…

astro-ph.GA2020

Millimeter-VLBI Detection and Imaging of the Gravitationally Lensed Gamma-Ray Blazar JVAS B0218+357

Kazuhiro Hada, Kotaro Niinuma, Julian Sitarek +2

We observed the gravitationally lensed blazar JVAS B0218+357 with the KVN and VERA Array (KaVA) at 22, 43, and 86 GHz. The source has recently been identified as an active gamma-ra…

astro-ph.HE20201 cited

Observations of V404 Cygni during the 2015 outburst by the Nasu telescope array at 1.4 GHz

Kuniyuki Asuma, Kotaro Niinuma, Kazuhiro Takefuji +5

Waseda University Nasu telescope array is a spatial fast Fourier transform (FFT) interferometer consisting of eight linearly aligned antennas with 20 m spherical dishes. This type…

astro-ph.GA20208 cited

Spatially Resolved Molecular Gas Properties of Host Galaxy of Type I Superluminous Supernova SN 2017egm

Bunyo Hatsukade, Kana Morokuma-Matsui, Masao Hayashi +6

We present the results of CO(1-0) observations of the host galaxy of a Type I superluminous supernova (SLSN-I), SN2017egm, one of the closest SLSNe-I at z = 0.03063, by using the A…