Dartmouth Events

Physics & Astronomy Virtual Colloquium - Luca Amendola, Univ. of Heidelberg

Title: "Cosmology Without Assuming a Cosmology"

Friday, April 16, 2021
3:00pm – 4:00pm
Zoom: Email for link and password
Intended Audience(s): Public
Categories: Lectures & Seminars

Current estimations of cosmological parameters depend often on assumptions about the cosmological model itself. The estimates of H0 or Ωm from CMB surveys, for instance, are valid only assuming a particular model, typically the standard ΛCDM. Similar model-dependent results are obtained also from analyses of large-scale structure. In some case it is however possible to combine observations in such a way to get estimates of physical
quantities that are valid regardless (to some extent) of the underlying model. Here I will discuss how one can determine the cosmological expansion rate H(z) and the deviation from Einstein gravity η by combining in a model-independent way several observational probes, from redshift distortions, to lensing, to matter clustering.

For more information, contact:
Tressena Manning

Events are free and open to the public unless otherwise noted.