Effects of Lyman alpha scattering in the IGM on clustering statistics of Lyman alpha emitters

Abstract

We investigate the correlations between the observed fraction of Lyman alpha emission from star-forming galaxies and the large scale structure by post-processing snapshots of a large, high resolution hydrodynamical simulation with a Lyman alpha radiative transfer code at redshifts z=4, 3, 2. We find correlations of the observed fraction with density, density gradient along the line of sight, velocity and velocity gradient along the line of sight, all within the same order of magnitude (tens of percent). Additionally, a correlation with the angular momentum of the dark matter halo is detected. In contrast to a previous study, we find no significant deformation of the 2-point correlation function due to selection effects from radiative transfer in the IGM within the limited statistics of the simulation volume.

13 pages; accepted for publication in A&A

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Cited by in corpus (15)

• RASCAS: RAdiation SCattering in Astrophysical Simulations
• Large-scale clustering of Lyman-alpha emission intensity from SDSS/BOSS
• Anisotropic Lyman-alpha Emission
• Inclination Dependence of Lyman-Alpha Properties in a Turbulent Disk Galaxy
• Lyα emission from galaxies in the Epoch of Reionization
• Clustering and lifetime of Lyman Alpha Emitters in the Epoch of Reionization
• Effects of Spatial Discretization in Lyman-alpha Line Radiation Transfer Simulations
• A new model framework for circumgalactic Ly$\alpha$ radiative transfer constrained by galaxy-Ly$\alpha$ forest clustering
• Effects of Lyman alpha scattering in the IGM on clustering statistics of Lyman alpha emitters
• Radiative Transfer Distortions of Lyman-$\alpha$ Emitters: a New Fingers-of-God Damping in the Clustering in Redshift Space
• Ly-alpha Radiative Transfer: A Stokes Vector Approach to Ly-alpha Polarization
• The impact of gas bulk rotation on the lyman-alpha line
• Constraining Reionization with Lyman Alpha Emitting Galaxies
• Lyα Intensity Mapping in HETDEX: Galaxy-Lyα Intensity Cross-Power Spectrum
• Ciii]$\lambda 1909$ emission as an alternative to Ly$\alpha$ in the reionization era: the dependence of Ciii] and Ly$\alpha$ at $3<z<4$ from the VANDELS survey