activity
20172021
most citedKinematics of the M87 jet in the collimation zone: gradual acceleration and velocity stratification

72 citations · 163 across the 4 of their papers we have counts for

collaborators

5 papers

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.HE201972 cited

Kinematics of the M87 jet in the collimation zone: gradual acceleration and velocity stratification

Jongho Park, Kazuhiro Hada, Motoki Kino +36

We study the kinematics of the M87 jet using the first year data of the KVN and VERA Array (KaVA) large program, which has densely monitored the jet at 22 and 43 GHz since 2016. We…

astro-ph.GA201918 cited

Jet Kinematics of the Quasar 4C +21.35 from Observations with the KaVA Very Long Baseline Interferometry Array

Taeseok Lee, Sascha Trippe, Motoki Kino +39

We present the jet kinematics of the flat spectrum radio quasar (FSRQ) 4C +21.35 using time-resolved KaVA very long baseline interferometry array radio maps obtained from September…

astro-ph.GA201910 cited

A broad HCO+ absorption line associated with the circumnuclear torus of NGC 1052

Satoko Sawada-Satoh, Do-Young Byun, Sang-Sung Lee +8

In the circumnuclear region of the nearby radio galaxy NGC~1052. Our 3mm VLBI observations with the Korean VLBI Network have spatially resolved the broad HCO absorption at…

astro-ph.HE201763 cited

Pilot KaVA monitoring on the M87 jet: confirming the inner jet structure and superluminal motions at sub-pc scales

Kazuhiro Hada, Jong Ho Park, Motoki Kino +34

We report the initial results of our high-cadence monitoring program on the radio jet in the active galaxy M87, obtained by the KVN and VERA Array (KaVA) at 22 GHz. This is a pilot…