Mathematics – Logic
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.2307w&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #23.07; Bulletin of the American Astronomical Society, Vol. 34, p.1143
Mathematics
Logic
Scientific paper
Most of the energy in the universe is of unknown nature to us. Observers/experimentalists face the historical opportunity to probe properties of this dark energy (the most important of which being the time-dependence of its density), and constrain the numerous plausible phenomenological models of dark energy that have been constructed. Based on non-parametric estimates of dark energy density (without imposing the weak energy condition) from simulated type Ia supernova (SN Ia) data from feasible future SN Ia surveys, I show that obtaining as many SNe Ia as possible out to the highest possible redshift is of critical importance to our ability to differentiate between different dark energy models. A ground-based supernova pencil beam survey on a dedicated 4m telescope, with a square degree field of view, can yield ~ 2000 type Ia supernovae (SNe Ia) out to z ~ 1.5 for an effective observational duration of one year [Wang, astro-ph/9806185, Astrophys. J. 531, 676 (2000)]. Together with low redshift SNe Ia from SN factories and surveys, this ground based survey can supplement SNAP in dark energy searches by freeing up SNAP to become a space-based SN pencil beam survey. The latter can obtain the maximum number of the highest redshift SNe Ia (say, out to z ~ 2), which are not accessible from the ground. This strategy (of a ground-based SN pencil beam survey to supplement SNAP) would boost the power of SNAP as a dark energy probe, and substantially increase the scientific return of dark energy searches at the modest additional cost of \$20-30 million. This Ground-Based Supernova Pencil Beam Survey is the ideal interim observational project before SNAP (a dark energy probe) and LSST (a dark matter probe) become reality in the next decade.
No associations
LandOfFree
Optimal Strategy for Dark Energy Search 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 Optimal Strategy for Dark Energy Search, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimal Strategy for Dark Energy Search will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1889656