activity
20092024
most citedA statistical relation between the X-ray spectral index and Eddington ratio of active galactic nuclei in deep surveys

214 citations · 1.6k across the 43 of their papers we have counts for

collaborators

41 papers

astro-ph.GA2024

Ongoing and fossil large-scale outflows detected in a high-redshift radio galaxy: [C II] observations of TN J09242201 at

Kianhong Lee, Masayuki Akiyama, Kotaro Kohno +13

We present Atacama Large Millimeter/submillimeter Array observations of the [C II] 158 m line and the underlying continuum emission of TN J09242201, which is one of the most…

astro-ph.GA2022★ 10 cited

Multi-line assessment of narrow-line regions in 3 radio galaxies

Koki Terao, Tohru Nagao, Kyoko Onishi +4

In this paper, we utilize high-quality rest-UV spectra of three radio galaxies at 3 observed with VLT/FORS2 to measure the flux of several emission lines including relativ…

astro-ph.GA2021★ 92 cited

The VANDELS ESO public spectroscopic survey: final Data Release of 2087 spectra and spectroscopic measurements

B. Garilli, R. McLure, L. Pentericci +94

VANDELS is an ESO Public Spectroscopic Survey designed to build a sample of high signal to noise, medium resolution spectra of galaxies at redshift between 1 and 6.5. Here we prese…

astro-ph.GA2020★ 73 cited

The Faint End of the Quasar Luminosity Function at from the Subaru Hyper Suprime-Cam Survey

Mana Niida, Tohru Nagao, Hiroyuki Ikeda +17

We present the quasar luminosity function at derived from the optical wide-field survey data obtained as a part of the Subaru strategic program (SSP) with Hyper Suprime-…

astro-ph.GA2020★ 46 cited

Metal enrichment in the circumgalactic medium and Lyα haloes around quasars at z 3

Yucheng Guo, Roberto Maiolino, Linhua Jiang +8

Deep observations have detected extended Ly emission nebulae surrounding tens of quasars at redshift 2 to 6. However, the metallicity of such extended haloes is still poorly und…

astro-ph.HE2019★ 12 cited

NuSTAR Discovery of Dead Quasar Engine in Arp 187

Kohei Ichikawa, Taiki Kawamuro, Megumi Shidatsu +7

Recent active galactic nucleus (AGN) and quasar surveys have revealed a population showing rapid AGN luminosity variability by a factor of . Here we present the most drasti…