Reconstructing the baryon acoustic oscillations using biased tracers

Understand

The reconstruction of the initial conditions of the Universe is an important topic in cosmology, particularly in the context of sharpening the measurement of the baryon acoustic oscillation (BAO) peak.

• Nonlinear reconstruction algorithms developed in recent years, when applied to late-time matter fields, can recover to a substantial degree the initial density distribution, however, when applied to sparse tracers of the matter field, the performance is poorer.
• In this paper we apply the Shi et al.
• non-linear reconstruction method to biased tracers in order to establish what factors affect the reconstruction performance.