Cosmology with Density-Split Statistics

by Dr Yan-Chuan Cai (University of Edinburgh)

Friday 29 Nov 2024, 14:30 → 16:30 Asia/Kolkata

DTP Seminar Room (304A)

One way to advance our understanding of cosmology is by conducting precise measurements of the large-scale structure and comparing them with models of the Universe. Large galaxy surveys, such as DESI and Euclid, are designed to map an unprecedented volume of the Universe, promising significant improvements in the statistical precision of our measurements. However, even before these new surveys, our existing measurements may have already reached the reliability limits of current modeling approaches. I will present our recent attempts to overcome these limits by introducing the density-split statistics. I will explain how this new method can extract additional information from the quasi-nonlinear and non-Gaussian aspects of the large-scale structure. I will present results from its application to observational data.