DUET - The Dark Universe Exploration Telescope

Abstract

DUET, a proposed NASA Midex class mission, will produce a catalog of ~20,000 X-ray selected clusters and groups of galaxies suitable for detailed cosmological investigations. We present the cosmological constraints achievable by DUET, the functional requirements of the survey, and briefly describe an instrument/mission design capable of achieving these requirements. The advantages of an X-ray survey for constraining the nature and amount of dark energy and dark matter are emphasized. Constraints on cosmological parameters are precise and complementary to other approaches. The density of dark energy, dark matter, and neutrinos will be measured with a statistical uncertainty of 0.5%, 0.5%, and 0.2% of the critical density and the dark energy equation of state can be measured to +/- 0.2 if dark energy and dark matter contribute ~2/3 and ~1/3 of the critical density as currently believed. DUET is a multi-national collaboration led by GSFC with substantial contributions from groups in the US, Europe, and Japan.

4 pages, 5 figures, Astronomishe Nachrichtedn, in press (Feb 2003). Proceedings of "X-ray Surveys, in the Light of New Observatories", 4-6 September, Santander, Spain

References in corpus (4)

• The Mass Function of an X-Ray Flux-Limited Sample of Galaxy Clusters
• The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample
• A new upper limit on the total neutrino mass from the 2dF Galaxy Redshift Survey
• X-ray Clusters of Galaxies as Tracers of Structure in the Universe

Cited by in corpus (4)

• Constraining the Evolution of Dark Energy with a Combination of Galaxy Cluster Observables
• The X-Ray Derived Cosmological Star Formation History and the Galaxy X-Ray Luminosity Functions in the Chandra Deep Fields North and South
• Weighing Neutrinos with Galaxy Cluster Surveys
• The XMM Cluster Survey: Forecasting cosmological and cluster scaling-relation parameter constraints