The distribution and abundance of galaxy clusters at different epochs
are sensitive probes of dark energy. They measure structure growth on
much smaller scales than baryon oscillations, providing complementary
information. Ongoing and future surveys will yield rich cluster
catalogs. The task is to connect observations to simulations by
addressing the following questions: How can the mass of a simulated
cluster be connected to optical, mm-wave, X-ray, and IR observations
(the mass-observable relations)? How important are astrophysical
feedback effects? How well can the mass distribution -- exponentially
sensitive to dark energy -- be predicted? We will attack these
questions by combining cluster observations from ACT, BCS, SDSS, and
SPT with dark matter and hydrodynamic simulations.
Publications
- Cosmological Shocks in Adaptive Mesh Refinement Simulations and the Acceleration of Cosmic Rays
S.W. Skillman, B.W. O'Shea, E.J. Hallman, J.O. Burns, M.L. Norman,
ApJ submitted,
arXiv:0806.1522
- Chandra Cluster Cosmology Project II: Samples and X-ray Data Reduction
A.Vikhlinin, R.A.Burenin, H.Ebeling, W.R.Forman, A.Hornstrup, C.Jones,
A.V.Kravtsov, S.S.Murray, D.Nagai, H.Quintana, A.Voevodkin,
ApJ, submitted,
arXiv:0805.2207
-
X-ray Observations of Optically Selected Giant Elliptical-Dominated
Galaxy Groups
A. Voevodkin, C. Miller, K. Borozdin,
K. Heitmann, S. Habib, P. Ricker, and R. Nichol, ApJ, in press,
arXiv:0803.3786
-
The Structure of Halos: Implications for Group and Cluster
Cosmology,
Z. Lukic, D. Reed, S. Habib, and K. Heitmann, ApJ,
accepted for publication, arXiv:0803.3624
-
The Halo Mass Function: High Redshift Evolution and Universality
Z. Lukic, K. Heitmann, S. Habib, S. Bashinsky, and P.M. Ricker,
ApJ 671, 1160 (2007)
astro-ph/0702360
-
Virial Scaling of Massive Dark Matter Halos: Why Clusters Prefer a
High Normalization Cosmology
A.E. Evrard, J. Bialek, M. Busha, M. White, S. Habib,
K. Heitmann, M. Warren, E. Rasia, G. Tormen, L. Moscardini, C. Power,
A.R. Jenkins, L. Gao, C.S. Frenk, V. Springel, S.D.M. White,
J. Diemand , ApJ, 672, 122 (2008)
astro-ph/0702241
|
