Tamara Davis, Maria Vincenzi and Dillon Brout tell us about the Dark Energy Survey’s (DES) new supernova catalogue. The catalogue has more than 1500 new supernovae, and will allow a vast range of new cosmology constraints. It is a factor of around five larger than the next largest high redshift supernovae catalogue.

Very curiously, DES’ supernovae see hints of evolving dark energy. This is especially curious given that a few months after DES released this data, the Dark Energy Spectroscopic Instrument (DESI) also released data with similar hints.

Tamara: https://smp.uq.edu.au/profile/186/tamara-davis

Maria: https://www.linkedin.com/in/maria-vincenzi-45a739150/

Dillon: https://djbrout.github.io/

Key cosmology paper: https://arxiv.org/abs/2401.02929

Cosmological Analysis and Systematic Uncertainties: https://arxiv.org/abs/2401.02945

Light curves and 5-Year data release: https://arxiv.org/abs/2406.05046