Ghostly strong Lya absorbers in SDSS DR12
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We have searched the Sloan Digital Sky Survey Data Release 12 for ghostly strong Ly{alpha} (DLA) systems. These systems, located at the redshift of the quasars, show strong...
我们在斯隆数字巡天（Sloan Digital Sky Survey, SDSS）第12次数据发布（Data Release 12, DR12）中搜寻了幽灵状强莱曼α（Lyman α, Lyα）阻尼系统（Damped Lyman-α systems, DLA）。这类系统的红移与类星体的红移一致，呈现出强烈的……
