Supernova / Acceleration Probe: Cosmology with Type Ia Supernovae

Details Supernova / Acceleration Probe: Cosmology with Type Ia Supernovae Supernova / Acceleration Probe: Cosmology with Type Ia Supernovae

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.6406k&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #64.06; Bulletin of the American Astronomical Society, Vol. 33, p.1406

Physics

High Energy Physics

Scientific paper

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. Each year, SNAP will discover and obtain high-quality data for ~ 2800 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 (Ω M) to +/-0.02, vacuum energy density (Ω Λ ) to +/-0.05, and curvature (Ω K) to +/-0.06. The data set can test the nature of the ``dark energy'' that is accelerating the expansion of the universe by measuring the ratio of the dark energy's pressure to its density to +/- 0.05, and by studying this ratio's time dependence. This project is supported by the US Department of Energy/Office of High Energy Physics.

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