activity
20112026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations · 16.2k across the 121 of their papers we have counts for

collaborators

126 papers

astro-ph.HE2026

The 2015-2017 Large EVPA Rotation in OJ 287: Dominant Propagating Component in a Helical Magnetic Field with Time-Dependent Viewing Geometry

Wanchaloem Khwammai, Minchul Kam, Motoki Kino +11

We present high-cadence, multi-frequency monitoring of the blazar OJ 287 using KVN (22--129 GHz), ALMA (91.5--343.5 GHz), and Metsähovi (37 GHz), covering 2012--2023, together with…

astro-ph.GA2026

The Celestial Reference Frame at K Band: The CRF-K-2025 Catalog

David Gordon, Aletha de Witt, Christopher S. Jacobs +10

We present an updated K band (24 GHz) celestial reference frame (CRF) constructed from 3.5 million Very Long Baseline Interferometry (VLBI) observations collected during 211 observ…

astro-ph.IM2026

Verification of the Polarimetric Capability of the East Asia VLBI Network

Yunjeong Lee, Jongho Park, Do-Young Byun +10

The East Asia VLBI Network (EAVN) has recently enabled dual-polarization observations at and . We present the first systematic verification of its polarimetr…

astro-ph.IM2026★ 1 cited

A High-frequency Geodetic VLBI Experiment for Optical Clock Comparison

Monia Negusini, Myoung-Sun Heo, Cecilia Clivati +40

An intercontinental metrological clock comparison between Italy and the Republic of Korea was performed by means of geodetic K-band VLBI observations. The comparison involved the h…

astro-ph.GA2026

A Unified Origin of Faraday Rotation toward 3C 84: The Circumnuclear Ambient Medium within the Parsec-Scale Bondi Radius of the Host Galaxy NGC 1275

Minchul Kam, Jongho Park, Sascha Trippe +11

We present multi-frequency polarimetric observations of 3C 84 obtained with the Korean VLBI Network at 43-141 GHz, the Very Long Baseline Array at 43 GHz, and the High Sensitivity…

astro-ph.GA2026

Jet-torus interaction revealed by sub-parsec SO absorption in NGC 1052

Satoko Sawada-Satoh, Seiji Kameno, Nozomu Kawakatsu +10

We report the first λ2-mm very long baseline interferometry (VLBI) observations of the radio galaxy NGC 1052, conducted with the Korean VLBI Network (KVN) using a wide-band recordi…