Speaker
Yuting Wang
(National Astronomical Observatories, CAS)
Description
Non-linear cosmological information can be effectively extracted by jointly analyzing the pre- and post-reconstruction power spectra of large-scale structure. In this work, we present measurements of the pre- and post-reconstruction power spectra, as well as cross power spectrum between the density fields before and after the reconstruction in the Luminous Red Galaxies (LRGs) of the DESI DR1 data release. We perform a joint fit to these measurements using an emulator-based modeling framework, thereby, for the first time, capturing complementary non-linear information from the density fields before and after the reconstruction in observational survey data.
Primary author
Yuting Wang
(National Astronomical Observatories, CAS)
