Radiative Transfer Modeling of Lyman Alpha Emitters. II. New Effects in Galaxy Clustering

摘要: We study the clustering properties of z~5.7 Lyman-alpha emitters (LAEs) in a cosmological reionization simulation with full Lya radiative transfer calculation. substantially modifies intrinsic emission properties, compared to observed ones, depending on density and velocity structure environment around emitting galaxy. This environment-dependent selection introduces new features LAE clustering, suppressing (enhancing) line-of-sight (transverse) fluctuations giving rise scale-dependent galaxy bias. In real space, contours three-dimensional two-point correlation function LAEs appear be prominently elongated along line sight large scales, an effect that is opposite much stronger than linear redshift-space distortion effect. The projected greatly enhanced amplitude by factor up few, case without dependent can understood simple, physically motivated model, where depends matter density, velocity, their gradients. discuss implications consequences effects from interpreting measurements constraining cosmology LAEs.