Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003tsra.symp..285l&link_type=abstract
TEXAS IN TUSCANY. Proceedings of the XXI Symposium on Relativistic Astrophysics. Held 9-13 December 2002 in Florence, Italy. Edi
Astronomy and Astrophysics
Astrophysics
Supernovae, Distance Indicators, Cosmology
Scientific paper
Measuring accurate distances allows us to map the expansion history of the universe. In effect, this is a measurement of the Hubble parameter at different cosmological ages. Since the various energy components in a Friedmann universe affect the scale parameter, i.e. redshift, differently, it is possible to disentangle their importance as a function of time. Currently, the only distance indicator stretching over a large enough redshift range is provided by Type Ia Supernovae. Many open questions concerning the systematics of Type Ia Supernovae remain, however, their properties as distance indicators are securely established. The most critical issue is potential evolution of the normalisation of the peak luminosity of the supernovae. In the future, the equation of state of the dominant form of energy in the universe can be established with observations of supernovae. The first experiments have already started and will prepare the ground for possible future satellite missions.
No associations
LandOfFree
Evidence for AN Accelerating Universe from Type IA Supernovae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evidence for AN Accelerating Universe from Type IA Supernovae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for AN Accelerating Universe from Type IA Supernovae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1090483