activity
20052023
most citedA statistical relation between the X-ray spectral index and Eddington ratio of active galactic nuclei in deep surveys

214 citations · 3.3k across the 73 of their papers we have counts for

collaborators

75 papers

astro-ph.GA2023★ 9 cited

The Centimeter to Submillimeter Broad Band Radio Spectrum of the Central Compact Component in A Nearby Type-II Seyfert Galaxy NGC 1068

Tomonari Michiyama, Yoshiyuki Inoue, Akihiro Doi

We analyze all the available Atacama Large Millimeter / submillimeter Array archival data of the nearby Type-II Seyfert galaxy NGC 1068, including new 100 GHz data with the angular…

astro-ph.HE2023★ 6 cited

Probing the Heart of Active Narrow-line Seyfert 1 Galaxies with VERA Wideband Polarimetry

Mieko Takamura, Kazuhiro Hada, Mareki Honma +9

We explored the parsec-scale nuclear regions of a sample of radio-loud narrow-line Seyfert 1 galaxies (NLSy1s) using the VLBI Exploration of Radio Astronomy (VERA) wideband (at a r…

astro-ph.HE2023★ 154 cited

A ring-like accretion structure in M87 connecting its black hole and jet

Ru-Sen Lu, Keiichi Asada, Thomas P. Krichbaum +118

The nearby radio galaxy M87 is a prime target for studying black hole accretion and jet formation^{1,2}. Event Horizon Telescope observations of M87 in 2017, at a wavelength of 1.3…

astro-ph.GA2023

The Past and Future of East Asia to Italy: Nearly Global VLBI

Gabriele Giovannini, Yuzhu Cui, Kazuhiro Hada +29

We present here the East Asia to Italy Nearly Global VLBI (EATING VLBI) project. How this project started and the evolution of the international collaboration between Korean, Japan…

astro-ph.IM2022★ 16 cited

Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN)

Kazunori Akiyama, Juan-Carlos Algaba, Tao An +101

The East Asian VLBI Network (EAVN) is an international VLBI facility in East Asia and is operated under mutual collaboration between East Asian countries, as well as part of Southe…

astro-ph.GA2022★ 15 cited

ALMA detection of parsec-scale blobs at the head of kiloparsec-scale jet in the nearby Seyfert galaxy NGC 1068

Tomonari Michiyama, Yoshiyuki Inoue, Akihiro Doi +1

We present Atacama Large Millimeter/submillimeter Array observations at GHz with arcsec (3 pc) resolution of the kiloparsec-scale jet seen in the nearby Seyfert…