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Mapping the Most Massive Overdensities through Hydrogen (MAMMOTH). II. Discovery of the Extremely Massive Overdensity BOSS1441 at z = 2.32

Cai, Zheng; Fan, Xiaohui; Bian, Fuyan; Zabludoff, Ann; Yang, Yujin; Prochaska, J. Xavier; McGreer, Ian D; Zheng, Zhen-Ya; Kashikawa, Nobunari; Wang, Ran; Frye, Brenda; Green, Richard F


Cosmological simulations suggest a strong correlation between high optical-depth Lyα absorbers, which arise from the intergalactic medium, and 3D mass overdensities on scales of 10-30 comoving Mpc. By examining the absorption spectra of ∼80,000 QSO sight lines over a volume of 0.1 Gpc3 in the Sloan Digital Sky Survey III (SDSS-III), we have identified an extreme overdensity, BOSS1441, which contains a rare group of strong Lyα absorbers at . This absorber group is associated with six QSOs at the...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/aa6a1a


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