AAS 203rd Meeting, January 2004
Session 82 Mass and Energy Matters
Poster, Wednesday, January 7, 2004, 9:20am-6:30pm, Grand Hall

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[82.17] Mapping the Dark Energy with SNAP

E. Linder (Florida Atlantic Univ.)

Precision distance-redshift observations can map out the recent expansion history of the universe, including the present acceleration and the transition to matter dominated deceleration. The proposed Supernova/Acceleration Probe (SNAP) will determine the energy density and equation of state of the dark energy, providing insights into fundamental high energy physics theories and gravitation. The mission also includes a wide area weak gravitational lensing survey. In complementarity with this lensing information or Planck CMB data, SNAP can potentially achieve 3 sigma measurement of time variation in the equation of state. This is a critical clue to distinguish between various models for the dark energy.

This work was supported by the Director, Office of Science, DOE under DE-AC03-76SF00098 at LBL.

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