Ryuichiro Hada

activity

20142026

most citedAn iterative reconstruction of cosmological initial density fields

57 citations · 99 across the 9 of their papers we have counts for

collaborators

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2 papers · 1 filter

astro-ph.GA2025

Measurements of quasar proximity zones with the Ly $α$ forest of DESI Y1 quasars

Ryuichiro Hada, Paul Martini, David H. Weinberg +41

The intergalactic medium (IGM) around quasars is shaped by their dense environments and by their excess ionizing radiation, forming a "quasar proximity zone" whose size and anisotr…

astro-ph.GA2023★ 1 cited

Prospects for constraining quasar ages with fiber spectrographs: quasar-induced Ly $α$ emission from the intergalactic medium

Ryuichiro Hada, Masahiro Takada, Akio K. Inoue

We present a theoretical framework for linking quasar properties, such as quasar age, to the surrounding Ly $α$ emission intensity. In particular, we focus on a method for mapping t…

Measurements of quasar proximity zones with the Lyα forest of DESI Y1 quasars

Prospects for constraining quasar ages with fiber spectrographs: quasar-induced Lyα emission from the intergalactic medium

Measurements of quasar proximity zones with the Ly $α$ forest of DESI Y1 quasars

Prospects for constraining quasar ages with fiber spectrographs: quasar-induced Ly $α$ emission from the intergalactic medium