Speaker
Nikita Nedelko
(INR RAS)
Description
Recent data releases from the Dark Energy Spectroscopic Instrument (DESI) survey produce very strong upper constraints on the sum of neutrino masses ($\sum m_{\nu}$), putting cosmology in tension with ground-based experiments, especially in the case of inverse mass hierarchy. However, these constraints still heavily depend on the baseline CMB dataset used to calibrate DESI measurements. We explore this dependence in the case of two different data releases from the South Pole Telescope (SPT), covering the same sky field for different observational periods and analysis pipelines, producing and comparing alternative constraints on $\sum m_{\nu}$ using additional low-redshift observations.
Primary author
Nikita Nedelko
(INR RAS)
Co-author
Dmitry Gorbunov
(Institute for Nuclear Research of the Russian Academy of Sciences)
