Presenting a new set of three-dimensional simulations of single-degenerate (SD) Type Ia supernovae undergoing a gravitationally confined detonation incorporating new findings concerning the spatial distribution for the initial ignition, implications concerning nature and intrinsic stochasticity of outcomes for SD Type Ia supernovae will be discussed.
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 radiative transfer modify those statistics.
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 mock observations of Lyman-alpha emitters. Doing so, we can quantify two physical distortion effects in the two-point correlation function introduced by radiative transfer.
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 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 Illustris and quantify the impact of RT on the real space galaxy clustering (Behrens, CB et al. arXiv: 1710.06171).