Pitt PACC Seminar: Stefano Anselmi

May 9, 2024 - 4:00pm

The challenges of using Baryon Acoustic Oscillations distances for cosmology

Baryon Acoustic Oscillations are considered one of the most powerful cosmological probes. They are generally deemed to provide distance measures independent of a specific cosmological model. At the same time the obtained distances are considered agnostic with respect to other cosmological observations. However, in current measurements, the inference is done assuming parameter values of a fiducial LCDM model and employing prescriptions tested to be unbiased only within some LCDM fiducial cosmologies. Moreover the procedure needs to face the ambiguity of choosing a specific correlation function model-template to measure cosmological distances.Does this comply with the requirement of model and parameter independent distances useful, for instance, to select cosmological models, detect Dark Energy and characterize cosmological tensions?
In this talk I will review the subject, answer compelling questions and explore new promising research directions.

Location and Address

321 Allen Hall and Zoom

Zoom ID: 971 1312 6809 PW: pittpacc