AAS 197, January 2001
Session 72. Cosmology from z=1100 to 1
Display, Wednesday, January 10, 2001, 9:30am-7:00pm, Exhibit Hall

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[72.11] The Supernova / Acceleration Probe: Exploring the Dark Side of the Universe

A. Kim (Berkeley), G. Aldering (LBNL), P. Astier (LPNHE), A. Baden (Maryland), C. Bebek (Cornell), L. Bergstrom (Stockholm), D. Curtis (Berkeley), S. Deustua, W. Edwards (LBNL), R. Ellis (CalTech), A. Fruchter (STSI), B. Frye (LBNL), J.F. Genat (LPNHE), G. Goldhaber (Berkeley), A. Goobar (Stockholm), J. Goodman (Maryland), J. Graham (Berkeley), D. Hardin (LPNHE), S. Harris, P. Harvey, H. Heetderks (Berkeley), S. Holland (LBNL), I. Hook (Edinburgh), D. Huterer (Chicago), D. Kasen, R. Knop, R. Lafever (LBNL), M. Lampton (Berkeley), M. Levi (LBNL), J-M. Levy (LPNHE), C. Lidman (ESO), R. Lin (Berkeley), S. Loken (LBNL), M. Metzger (CalTech), A. Mourao (CENTRA), P. Nugent (LBNL), R. Pain (LPNHE), D. Pankow, C. Pennypacker (Berkeley), S. Perlmutter (LBNL), J. Rich (CEA), K. Robinson (LBNL), K. Schamahneche (LPNHE), A. Spadafora, G. Smoot (Berkeley), G. Sullivan (Maryland), SNAP Collaboration

The Supernova / Acceleration Probe (SNAP) is a space experiment to measure the properties of the accelerating universe and study both the dark energy and the dark matter of the universe.

and to the

Each year, SNAP will discover and obtain high-quality data for ~2000 Type Ia supernovae in the redshift range 0.1 < z <1.7. The Hubble diagram of these calibrated candles will determine the cosmological parameters with high precision: mass density (\OmegaM) to ±.02, vacuum energy density (\Omega\Lambda) to ±.05, and curvature (\OmegaK) to ±.06. The data set can test the nature of the ``dark energy'' that is accelerating the expansion of the universe; a cosmological constant dark energy can be differentiated from alternatives (e.g. ``quintessence''), by measuring the ratio of the dark energy's pressure to its density to ±0.05, and by studying this ratio's time dependence. We explore the complementarity in cosmological parameter measurements between SNAP and different ground-based experiments. This project is supported in part by the US Department of Energy and by the National Science Foundation.

If you would like more information about this abstract, please follow the link to http://snap.lbl.gov/. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

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