Physics – High Energy Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19911602p&link_type=abstract
American Astronomical Society, 199th AAS Meeting, #116.02; Bulletin of the American Astronomical Society, Vol. 33, p.1480
Physics
High Energy Physics
Scientific paper
The SuperNova / Acceleration Probe (SNAP) is a satellite mission that is being designed primarily to address fundamental questions concerning the cosmological model of our universe and the nature of its constituents. Cross-cutting and complementary measurement approaches will be used, including Type Ia supernovae as ``calibrated standard candles," Type II supernovae expanding photosphere distance indicators, gravitational weak lensing and strong lensing. The mission design is primarily driven by the requirements of the next generation of these experiments, after the planned ground-based work of the next five years. To advance these measurements to levels of precision that match the complementary CMB satellite work it will be necessary to control or eliminate the sources of systematic uncertainty much more completely than will be possible with other planned facilities. SNAP is targeted at a level of systematic uncertainties that will make it possible to begin to discriminate between theories of the ``dark energy'' that apparently is accelerating the expansion of the universe. We will discuss the latest developments in this design phase of the project. This research has been supported in part by the U.S. Department of Energy, Division of High Energy Physics.
Perlmutter Saul
SNAP Collaboration
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