Publication

New Comology group Publication

November 11, 2020

Observational Cosmology Group

“Dark Energy Survey Year 3 Results: Weak Lensing Shape Catalogue ”, led by Marco Gatti, has been uploaded to arXiv as part of the upcoming DES year 3 cosmology analysis of galaxy clustering and gravitational lensing.

The paper presents and characterises the galaxy shape catalogue of DES Y3, which consists of 100,204,026 galaxies, measured in the riz bands, making it the largest catalogue for weak lensing studies ever created. The catalogue passes a large number of null tests, discussed in the paper. This work has a key role in the upcoming DES cosmological analysis release (see for further details on the DES website )

Latest Group News

New results

Andreu Font Presents Latest DESI BAO Results at Harvard

May 5, 2025

Andreu Font presented new DESI results on Baryon Acoustic Oscillations at Harvard, raising questions about the ΛCDM model and the constancy of the cosmological constant.

New Member

New member in the Cosmology Group

April 2, 2025

Tyann Dumerchat joined the Observational Cosmology group as a postdoctoral researcher

Instrumentation

Vera C. Rubin Observatory Installs LSST Camera on Telescope

March 13, 2025

The Vera C. Rubin Observatory has reached a major milestone with the successful installation of the LSST Camera on its telescope.