Reduced uncertainties up to 43\% on the Hubble constant and the matter density with the SNe Ia with a new statistical analysis

Understand

Type Ia Supernovae (SNe Ia) are considered the most reliable \textit{standard candles} and they have played an invaluable role in cosmology since the discovery of the Universe's accelerated expansion.

• During the last decades, the SNe Ia samples have been improved in number, redshift coverage, calibration methodology, and systematics treatment.
• These efforts led to the most recent \textit{``Pantheon"} (2018) and \textit{``Pantheon +"} (2022) releases, which enable to constrain cosmological parameters more precisely than previous samples.
• In this era of precision cosmology, the community strives to find new ways to reduce uncertainties on cosmological parameters.