|
Speaker |
Roman, Matthieu |
|
Coauthors |
Roman, Matthieu; Bartlett, James; Battye, Richard; Bonaldi, Anna; Delabrouille, Jacques; Melin, Jean-Baptiste |
| Talk Title |
Science With The Planck SZ 2015 Cluster Sample |
|
Abstract |
We present cluster counts and cosmological constraints corresponding to the full Planck mission data set. Our catalogue consists of 439 clusters detected through their Sunyaev-Zel'dovich (SZ) effect and selected with a signal-to-noise cut of 6. Under some modeling assumptions that will be described, we constrain cosmological parameters with a two-dimensional likelihood from the distribution of counts in redshift and signal-to-noise. Cluster model relies on the mass measurement, represented by a mass bias parameter 1-b. We use priors on 1-b with mass estimates obtained from gravitational lensing of background galaxies by Planck clusters, and by CMB temperature lensing. We find varying degrees of tension on the present-day amplitude of matter fluctuations with respect to Planck analysis of CMB temperature fluctuations. We also combine CMB and SZ likelihoods to examine constraints on extensions to the base flat LCDM model. |
|
Talk view |
|
|
|
|