New Publication
New Cosmology group paper
January 12, 2023
Observational Cosmology Group“Cosmological Fisher forecasts for next-generation spectroscopic surveys ” by William Doumerg and collaborators has been uploaded to arXiv.
In this paper we perform a Fisher matrix analysis for future spectroscopic surveys (MegaMapper, MUST…) on the BAO, RSD, the non-Gaussianity amplitude, and the total neutrino mass. These surveys will have a large number of fibres (~20,000), and study the high redshift universe (z>2). In addition, we model the observations of a spectroscopic survey with free observational parameters (redshift range, sky coverage, efficiency threshold…), and we derive the optimal ones for non-Gaussianity and neutrino mass measurements, and study the fibre increase effect.
New results
Andreu Font Presents Latest DESI BAO Results at Harvard
May 5, 2025
During the week of April 15, 2025, Andreu Font delivered a talk at Harvard’s Center for Astrophysics, presenting the latest Baryon Acoustic Oscillation (BAO) results from the Dark Energy Spectroscopic Instrument (DESI) collaboration. His presentation, titled “How Constant is the Cosmological Constant? Challenging the ΛCDM Model with New Measurements from the DESI Collaboration ”, explored how recent data may question key assumptions of the standard cosmological model.
The talk is available to watch online .