May 31, 2021 to June 4, 2021
Europe/Madrid timezone

Easing the sigma8-tension with nu-DM interactions

Jun 4, 2021, 3:30 PM


PhD forum talk + poster PhD Forum


Markus Rasmussen Mosbech (The University of Sydney)


The $\sigma_8$-tension of Planck data with weak lensing and redshift surveys is one of the main problems with the $\Lambda$CDM model of cosmology. We show that the tension can be alleviated by introducing an interaction between dark matter and neutrinos. We model the interaction using a linear Boltzmann treatment, introducing a novel implementation that for the first time uses the full massive neutrino hierarchy. We also provide upper limits on the interaction cross-section between neutrinos and dark matter.

arXiv number (if applicable) 2011.04206

Primary author

Markus Rasmussen Mosbech (The University of Sydney)

Presentation materials