Sep 27 – 30, 2021
Yerevan, Armenia
Etc/GMT+4 timezone

The Hubble tension and the magnetic universe

Sep 27, 2021, 10:30 AM
45m
Yerevan, Armenia

Yerevan, Armenia

Department of Physics, Alex Manukyan str. 1, Yerevan, Armenia

Speaker

Prof. Levon Pogosian (Simon Fraser University)

Description

Magnetic fields, if present in the plasma prior to last scattering, would induce baryon inhomogeneities and speed up the recombination process. As a consequence, the sound horizon at last scattering would be smaller, which would help relieve the Hubble tension. Intriguingly, the strength of the magnetic field required to alleviate the Hubble tension happens to be of the right order to also explain the observed magnetic fields in galaxies, clusters of galaxies and the intergalactic space. I will review this proposal and provide an update on its status in the context of the latest data.

Primary author

Prof. Levon Pogosian (Simon Fraser University)

Presentation materials