SILVERRUSH. VI. A simulation of Ly\(\alpha\) emitters in the reionization epoch and a comparison with Subaru Hyper Suprime-Cam survey early data

• Published in: arXiv.org 2018-04
• Main Authors: Inoue, Akio K, Hasegawa, Kenji, Ishiyama, Tomoaki, Yajima, Hidenobu, Shimizu, Ikkoh, Umemura, Masayuki, Konno, Akira, Harikane, Yuichi, Shibuya, Takatoshi, Ouchi, Masami, Shimasaku, Kazuhiro, Ono, Yoshiaki, Kusakabe, Haruka, Higuchi, Ryo, Lee, Chien-Hsiu
• Format: Article
• Language: English
• Subjects: Computer simulation; Dependence; Dispersion; Emitters; Galaxies; Ionization; Luminosity; Mathematical models; Radiative transfer
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1801.00067

The survey of Lyman \(\alpha\) emitters (LAEs) with Subaru Hyper Suprime-Cam, called SILVERRUSH (Ouchi et al.), is producing massive data of LAEs at \(z\gtrsim6\). Here we present LAE simulations to compare the SILVERRUSH data. In 162\(^3\) comoving Mpc\(^3\) boxes, where numerical radiative transfer calculations of reionization were performed, LAEs have been modeled with physically motivated analytic recipes as a function of halo mass. We have examined \(2^3\) models depending on the presence or absence of dispersion of halo Ly\(\alpha\) emissivity, dispersion of the halo Ly\(\alpha\) optical depth, \(\tau_\alpha\), and halo mass dependence of \(\tau_\alpha\). The unique free parameter in our model, a pivot value of \(\tau_\alpha\), is calibrated so as to reproduce the \(z=5.7\) Ly\(\alpha\) luminosity function (LF). We compare our model predictions with Ly\(\alpha\) LFs at \(z=6.6\) and \(7.3\), LAE angular auto-correlation functions (ACFs) at \(z=5.7\) and \(6.6\), and LAE fractions in Lyman break galaxies at \(5