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New Advances with Type Ia Supernovae To Measure The Expansion of the Universe

Daniel Scolnic
Duke University, Durham, USA

Abstract
Type Ia Supernovae (SNe Ia) are critical tools for measuring the current expansion rate of the universe, described by the Hubble Constant, and the accelerating expansion, due to a mysterious `dark energy’. As measurements from SNe Ia continue to be important and exciting, there has been widespread interest on strengths and limitations of using SNe Ia in analyses. Here, I review the latest cosmological results using SNe Ia as well as systematic uncertainties and needed improvements for future analyses. I present a new key insight on the physics of SNe that addresses some of the most confounding issues of the last decade. I discuss the state of the `Hubble Constant Tension’ and upcoming measurements of the local cosmic distance ladder. I then will transition to future experiments like LSST and WFIRST, and show forecasts of the amazing constraints on cosmological parameters with 100x the statistics of current samples.

2021 April 06, 15:30

IA
Online broadcast (Zoom)

Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia