A. Doi

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

Showing 2018 · astro-ph.GAShow all

2 papers · 2 filters

astro-ph.GA2018★ 3 cited

Searches for H $_{2}$ O Masers toward Narrow-Line Seyfert 1 galaxies

Yoshiaki Hagiwara, Akihiro Doi, Kazuya Hachisuka +1

We present searches for 22 GHz H $_{2}$ O masers toward 36 narrow-line Seyfert 1 galaxies (NLS1s), selected from known NLS1s with $v_{sy s}$ $≲$ 41000 km/s. Out of the 36 NLS1s i…

astro-ph.GA2018★ 25 cited

A Recollimation Shock in a Stationary Jet Feature with Limb-brightening in the Gamma-ray Emitting Narrow-line Seyfert 1 Galaxy 1H 0323+342

Akihiro Doi, Kazuhiro Hada, Motoki Kino +2

We report the discovery of a local convergence of a jet cross section in the quasi-stationary jet feature in the gamma-ray-emitting narrow-line Seyfert 1 galaxy (NLS1) 1H 0323+342.…

Searches for H2​O Masers toward Narrow-Line Seyfert 1 galaxies

A Recollimation Shock in a Stationary Jet Feature with Limb-brightening in the Gamma-ray Emitting Narrow-line Seyfert 1 Galaxy 1H 0323+342

Searches for H $_{2}$ O Masers toward Narrow-Line Seyfert 1 galaxies