Fakultät für Physik und Astronomie
STEPHEN PHILLIPS hostreviews.co.uk / UNSPLASH

H0 and the never-ending story of the expansion rate of the universe

Bruno Leibundgut , ESO Garching (Germany)

The uncertainty of the measured Hubble constant (H0) has been reduced by more than a factor of 10 over the past three decades. Despite this significant improvement the discussion on H0 continues unabated. The value of the Hubble constant sets the size and age of the universe. Since H0 is based on an absolute measurement, it is regarded as the most difficult cosmological parameter to determine. In particular, a discrepancy between local determinations of H0 and the ones based on cosmological models has emerged. It has been speculated that if the tension is confirmed an additional cosmological parameter would have to be introduced. The critical measurements of the distance ladder and in particular the use of supernovae as distance indicators will be discussed within this context.

Heidelberg Joint Astronomical Colloquium
30 Oct 2018, 16:15
Philosophenweg 12, Großer Hörsaal

Add to calendar Add to calendar
Today:
There are no scheduled talks today.
Upcoming:
How clumpy was the intergalactic medium during reionization?
Frederick Davies
Thu, 4 Apr 2024, 11:00
TBD
TBD
Thu, 4 Apr 2024, 11:00
Recent research results from the HKU Late State stellar evolution team - Strange Galactic alignments and solving the sulphur anomaly in Planetary Nebulae
Quentin Parker
Fri, 5 Apr 2024, 11:00
TBD
TBD
Thu, 11 Apr 2024, 11:00
Explaining the simplicity of the cosmos
Prof. Neil Turok
Thu, 11 Apr 2024, 18:30