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Anna Porredon (Ohio State University) “Dark Energy Survey Year 3 Results from Galaxy Clustering and Weak Lensing”

July 22, 2021 @ 4:00 pm - 5:00 pm

ABSTRACT:

The cosmological information extracted from photometric surveys is more robust when multiple probes of the large-scale structure of the universe are used. Two of the most sensitive probes are galaxy clustering and weak lensing. I will present cosmological results from the Dark Energy Survey first three years of observations combining those two probes, using an optimized lens sample of 11 million galaxies for the clustering measurements. The shear catalog used for weak lensing contains more than 100 million galaxies, constituting the largest dataset to date of this kind. I will show how we optimized the selection of this lens sample in terms of the forecasted cosmological constraints. Last, I will explain how we validated the analysis to deliver robust cosmological constraints.
http://physics.lbl.gov/rpm/index.php/events/

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Details

Date:
July 22, 2021
Time:
4:00 pm - 5:00 pm
Website:
https://lbnl.zoom.us/j/91782268585

Venue

Zoom Talk
50A-5132
Berkeley, ca 94720
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