clustering

The Lyman-alpha cosmic web in TNG50

The cosmic web can potentially be observed in direct emission through the Lyman-alpha line. While luminous Lyman-alpha emitters are already an established powerful tracer of the matter distribution in the high-redshift universe, the implications of …

The faint Lyman-alpha cosmic web in TNG50

The diffuse filaments of the cosmic web can potentially be observed in emission through the Lyman-alpha line. While luminous Lyman-alpha emitters are already an established powerful tracer of the matter distribution in the high-redshift universe, the …

Illuminating the CGM with Lyman-alpha emission

The Lyman-alpha cosmic web in IllustrisTNG

The Lyman-alpha Cosmic Web

While Lyman-alpha emitters (LAEs) are already a popular astrophysical and cosmological tracer of the high-z (>2) universe, diffuse Lyman- alpha observations outside of galaxies could become a powerful probe of the filamentary structure of the cosmic …

Simulating a Universe full of Lyman-alpha: From LAEs to LSS

Clustering Distortions from Lyman-alpha Radiative Transfer - A short introduction

The dimensionally split power spectrum/two-point correlation are standard tools for constraining the cosmological model from redshift surveys. Given the Lyman-alpha emission line, I will try to motivate what significant distortions from the line's …

Clustering Distortions from Lyman-alpha Radiative Transfer

Lyman-alpha based emission line surveys are prone to errors in their interpretation due to the complex radiative transfer for this line. We address this issue by running full radiative transfer simulations on the Illustris simulations and generate …

Clustering Distortions from Lyman-alpha Radiative Transfer

Introduction Lyman-$\alpha$ emitters and their intensity map are powerful probes of the large-scale structure. Given typically very high optical depths, scatterings with neutral hydrogen have a non-negligible impact on the observed distribution of Lyman-$\alpha$ photons. To study this in detail, we run a suit of radiative transfer (RT) simulations on the Illustris simulation and investigate two possible distortion effects arising from RT in real space as well as in redshift space for the two-point correlation function.

Cosmological radiative transfer simulations of Lyman-alpha emission: the impact on the galaxy clustering

Lyman-alpha emitters and their intensity map are powerful probes of the large-scale structure at optical and near-infrared wavelength as HETDEX plans. However, the fact that the Lyman-alpha photons are scattered due to the neutral hydrogen has …