Dark Energy Survey White Paper for the Dark Energy Task Force
Submitted June 15, 2005
Overview: We plan to carry out a deep optical-near infrared survey of 5000 sq. deg of the South Galactic
Cap to ~24th magnitude in SDSS griz, using DECam, a new 3 deg2 CCD camera to be mounted on the
Blanco 4-m telescope at CTIO. The survey data will allow us to measure the dark energy and dark matter
densities and the dark energy equation of state through four independent methods: galaxy clusters, weak
gravitational lensing tomography, galaxy angular clustering, and supernova distances. These methods are
doubly complementary: they constrain different combinations of cosmological model parameters and are
subject to different systematic errors. By deriving the four sets of measurements from the same data set
with a common analysis framework, we will obtain important cross checks of the systematic errors and
thereby make a substantial and robust advance in the precision of dark energy measurements.
DES Collaboration Institutions and Senior Personnel
Fermilab: J. Annis, H. T. Diehl, S. Dodelson, J. Estrada, B. Flaugher, J. Frieman, S. Kent, H. Lin, P.
Limon, K. W. Merritt, J. Peoples, V. Scarpine, A. Stebbins, C. Stoughton, D. Tucker, W. Wester.
University of Illinois at Urbana-Champaign: C. Beldica, R. Brunner, I. Karliner, J. Mohr, R. Plante, P.
Ricker, M. Selen, J. Thaler
University of Chicago: J. Carlstrom, S. Dodelson, J. Frieman, M. Gladders*, W. Hu, E. Sheldon, R.
Wechsler. * Carnegie Observatories until summer 2006
Lawrence Berkeley National Lab: G. Aldering, N. Roe, M. Levi, S. Perlmutter
NOAO/CTIO: T. Abbott, C. Miller, C. Smith, N. Suntzeff, A. Walker
Institut d'Estudis Espacials de Catalunya: F. Castander, P. Fosalba, E. Gaztañaga, J. Miralda-Escude
Institut de Fisica d'Altes Energies: E. Fernández, M. Martínez
University College London: O. Lahav, P. Doel, M. Barlow, R. Bingham, S. Bridle, S. Viti, J. Weller
University of Cambridge: G. Efstathiou, R. McMahon, W. Sutherland