Wendy Freedman, KICP, "Increasing Accuracy and Increasing Tension in H0"
KICP colloquium: Dec 7 @ 3:30PM, ERC 161
The accuracy in direct measurement of distances to galaxies has continued to improve dramatically over the past decade. Local measurements of the Hubble constant based on Hubble Space Telescope observations of astrophysical standard candles - Cepheids and Type Ia supernovae - have converged on a value of about 73 km/sec/Mpc with an uncertainty of 2-3%.