Cosmic Tensions, Novel Observables, and the Space In Between

by Mr. Tal Adi

BGU

at Astrophysics and Cosmology Seminar

Wed, 22 May 2024, 11:10
Sacta-Rashi Building for Physics (54), room 207

Abstract

As we step deeper into the era of high-precision cosmology, the standard cosmological model (LCDM) faces increasing scrutiny, revealing tensions between theory and observations, notably the Hubble and S8 tensions. These disparities, or unexplained phenomena, provide fertile ground for the development of new theoretical models that extend beyond LCDM, aiming to reconcile observations with theory. Many of these models manifest their signatures through density fluctuations, observable across various observational platforms. In this talk, I will provide a brief review of these discrepancies, focusing on the Hubble and S8 tensions, as well as cosmic magnetic fields. I will outline the theoretical models devised to address these tensions and discuss their anticipated impact on the matter power spectrum. Additionally, I will illustrate how these model signatures can be detected through emerging observables such as line intensity maps and the 21cm signal, offering insights into the constraints that can be placed on these models.

Created on 16-05-2024 by Zitrin, Adi (zitrin)
Updaded on 16-05-2024 by Zitrin, Adi (zitrin)