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IDM2008 - Identification of Dark Matter 2008
IDM2008 - Identification of Dark Matter 2008
18-22 August 2008 AlbaNova
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Seeing Dark Energy (35'+5')
 
The expansion rate and its evolution must be empirically determined
for our Universe to reveal its composition, scale, age, and fate.
The Hubble Space Telescope is unique in its ability to measure the keystones of 
cosmic expansion, distant type Ia 
supernovae and Cepheid variables in their hosts.  In 1998, high-redshift SNe Ia 
provided the first and only direct 
evidence for an accelerating Universe and the existence of dark energy.  More 
recently,
ACS and NICMOS on HST have become tools to calibrate the Hubble diagram of 
SNe Ia with modern data and to 
extend its reach to z>1 when cosmic expansion was still decelerating. Now, new 
measurements from HST of the 
expansion rate are providing new clues about the nature of the mysterious dark 
energy.
 
Id: 452
Place: AlbaNova
Room: Oskar Klein auditorium
Starting date:
18-Aug-2008   09:20
Duration: 40'
Contribution type: Talk
Primary Authors: Prof. RIESS, Adam (Johns Hopkins University)
Presenters: Prof. RIESS, Adam
Material: slide Slides
 
Included in session: Dark energy / Dark matter / Cosmology / Overview
Included in track: Dark energy / Cosmology
 

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