Cluster Cosmology in Deep Fields Alexis Finoguenov MPE/UMBC + A. Leauthaud, JP Kneib, M. Tanaka, R. Bielby, H. McCracken, J. Peacock, J. Taylor COSMOS, SXDF, WIRDS teams

Contiguous X-ray cluster surveys in context CDFS 0.3 sq.deg. 50cl -16 Lockman Hole, 0.3sq.deg. 30cl CDFN 0.2deg2 30 cl SXDF 1.1 deg2: 100 cl -15 XMM-COSMOS 2deg2: 300cl Flux 0.5-2 keV (cgs) DEEP2 2.6 sq.degs 10 deg2 XMM-LSS (Pierre’ 04) 600 cl SZ-CA (Boehringer’07) 600 cl -14 -13 XBOOTES 9 deg2 Murray et al. 2005 Alexis Finoguenov Cluster cosmology in Deep Fields Area

Cluster X-ray number counts COSMOS CDFS XMM Finoguenov et al. Alexis Finoguenov Cluster cosmology in Deep Fields Rosati, Borgani & Norman, ARAA 2003

X-ray clusters: deep and wide Deep: total of 10 sq.degs. At 100-300 groups per sq.degs.: a total of 1000 groups Wide: 20 sq.degs. at 20-50 groups per sq.degs.: a total of 1000 groups Guided XMM-CFHTLS: 100 sq.degs at 1 cluster per sq.degs.: total of 100 clusters Alexis Finoguenov Cluster cosmology in Deep Fields

Specifics of mass calibration In most cases X-ray masses are not feasible due to both faint and compact origin of sources Weak lensing data is best of its class (Leauthaud, AF, et al. 2010) ACS imaging Best photo-z Clustering analysis using conditional on density mass function (Faltenbacher, AF,Drory 2010) Alexis Finoguenov Cluster cosmology in Deep Fields

Cluster cosmology in Deep Fields SDSS WL MACS Subaru WL Typical X-ray mass determinations Alexis Finoguenov Cluster cosmology in Deep Fields

Cluster cosmology in Deep Fields COSMOS Massey et al. 2007 Alexis Finoguenov Cluster cosmology in Deep Fields

How to stack groups: significance Alexis Finoguenov Cluster cosmology in Deep Fields

Weak lensing binning scheme Alexis Finoguenov Cluster cosmology in Deep Fields

Mass surface density profiles Alexis Finoguenov Cluster cosmology in Deep Fields

Lx-Mass from weak lensing lgM=0.6lgLx+C Alexis Finoguenov Cluster cosmology in Deep Fields

Cluster cosmology: SXDF Alexis Finoguenov Cluster cosmology in Deep Fields

Cluster cosmology in Deep Fields WIRDS Alexis Finoguenov Cluster cosmology in Deep Fields

Breaking the record on the highest redshift X-ray selected cluster Mdyn=1.1e14 Msun Mx=6.e13Msun Alexis Finoguenov Cluster cosmology in Deep Fields

Cluster cosmology in Deep Fields Conclusions I presented how modern X-ray surveys identify dark matter halos through their X-ray emission We used the stacked weak lensing to calibrate the mass-observable relation An application to cosmology is shown with 5% constraint on σ8 Need a better precision on σ8 from CMB in order to constrain the non-Gaussianity The record breaking X-ray cluster is found at z=1.623 Deeper observations of COSMOS are needed to extend the weak lensing calibration to z~1.5 Alexis Finoguenov Cluster cosmology in Deep Fields

Stellar content of galaxy groups Giodini, et al. arXiv0904.0448 Less gas Alexis Finoguenov Cluster cosmology in Deep Fields More stars

COSMOS vs WMAP-5 cosmology We seem to understand the z<1 part of the COSMOS. I will produce the random cluster catalog for cross-correlation analysis Need to complete the spectro-z ID of high-z part in order to do cosmology. This is our advantage in comparison to many others! COSMOS Red M-L Alexis Finoguenov Cluster cosmology in Deep Fields

Cluster cosmology in Deep Fields Relevant equations: I Alexis Finoguenov Cluster cosmology in Deep Fields

Relevant equations: II Alexis Finoguenov Cluster cosmology in Deep Fields

Cluster cosmology in Deep Fields 220 clusters in COSMOS LSS at 0.12, 0.22, 0.34, 0.37, 0.51, 0.73, 0.89 (Optical groups:0.22,0.36,0.38) K.Kovac Alexis Finoguenov Cluster cosmology in Deep Fields