Conference: Assessing Uncertainties in Hubble’s Constant Across the Universe

Published: 22 Feb 2020

ESO Headquarters, Garching, Germany, 22–26 June 2020 

The recently reported discord among Hubble constant determinations – based on the Universe as it is today versus as it was shortly after the Big Bang – is puzzling cosmologists and astrophysicists alike. With the discord's significance rising thanks to improved measurements, the community is getting increasingly excited about the potential for modifications to cosmology. However, questions remain whether systematic uncertainties and biases are sufficiently understood and under control.

This conference seeks to bring together experts on a wide range of topics relevant for determining and/or interpreting Hubble's constant, from astrometry to the cosmic microwave background. We wish to focus on the physics, concepts, assumptions, limitations, and possible pitfalls underlying the various techniques and methods in order to assess the significance and implications of the discord. We expect this meeting to foster new collaborations and open new opportunities to unravel the physics of the cosmos and its expansion.

Further details are available via the conference website and the abstract deadline is 1 April 2020.