M. Akiyama

activity

20152026

most citedAGN X-ray luminosity function and absorption function in the Early Universe (

3 \leq z \leq 6

)

21 citations · 73 across the 13 of their papers we have counts for

collaborators

Showing 2023Show all

2 papers · 1 filter

astro-ph.GA2023★ 1 cited

Black hole mass and Eddington ratio distributions of less-luminous quasars at $z \sim 4$ in the Subaru Hyper Suprime-Cam Wide field

Wanqiu He, Masayuki Akiyama, Motohiro Enoki +11

We investigate the black hole mass function (BHMF) and Eddington ratio distribution function (ERDF) of broad-line AGNs at z=4, based on a sample of 52 quasars with i<23.2 at 3.50 <…

astro-ph.GA2023

Subaru High- $z$ Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at $z \sim 6$ Estimated via Spectral Comparison with Low- $z$ Quasars

Ayumi Takahashi, Yoshiki Matsuoka, Masafusa Onoue +9

We report the distribution of black hole (BH) masses and Eddingont ratios estimated for a sample of 131 low luminosity quasars in the early cosmic epoch ( $5.6 < z < 7.0$ ). Our work…

Black hole mass and Eddington ratio distributions of less-luminous quasars at z∼4 in the Subaru Hyper Suprime-Cam Wide field

Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z∼6 Estimated via Spectral Comparison with Low-z Quasars

Black hole mass and Eddington ratio distributions of less-luminous quasars at $z \sim 4$ in the Subaru Hyper Suprime-Cam Wide field

Subaru High- $z$ Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at $z \sim 6$ Estimated via Spectral Comparison with Low- $z$ Quasars