Conveners
Cosmology 3
- Weipeng Lin (Sun Yat-sen University)
I will provide an overview of the recent final data release of the ESO Kilo-Degree Survey and the associated cosmology results using weak gravitational lensing. As the field transitions to the next generation of surveys with Euclid and Rubin, I will discuss the current state of analysis choices, calibration and validation, and some lessons learnt.
Recent 2σ–4σ deviations from the cosmological constant $\Lambda$ suggest that dark energy (DE) may be dynamical, based on baryon acoustic oscillations and full-shape galaxy clustering analyses. This calls for even tighter DE constraints to narrow down its true nature. In this talk, I present how galaxy intrinsic alignments (IA) can enhance the full-shape galaxy clustering–based DE constraints,...
As underdense regions in the universe, cosmic voids are less affected by non-linear gravitational evolution and baryonic feedback, providing a clean environment for constraining cosmological parameters. In particular, the void density profile is sensitive to cosmology, but remains challenging to measure in observations. In this work, we investigate the method to constrain the void density...
