November 27, 2023 to December 1, 2023
Dual node
Europe/Paris timezone

Optimizing Galaxy Sample Selections for Weak Lensing Cluster Cosmology

Dec 1, 2023, 3:30 PM
Dual node

Dual node

IAP (Paris) & CCA/Flatiron (New York) IAP 98bis Boulevard Arago 75014 Paris FRANCE CCA/Flatiron 5th Avenue New York (NY) USA
Flash talk New York Contributed talks


Markus Rau (Argonne National Laboratory)


Weak Lensing Galaxy Cluster Masses are an important observable to test the cosmological standard model and modified gravity models. However cluster cosmology in optical surveys is challenged by sources of systematics like photometric redshift error. We use combinatorial optimization schemes and fast Machine Learning assisted model evaluation to select galaxy source samples that minimize the expected systematic error budget while maintaining sufficient signal-to-noise in the measurement to meet the stringent science requirements of surveys like LSST.

Primary author

Markus Rau (Argonne National Laboratory)

Presentation materials