Speaker
Cathy Horellou
Description
I will present results from a Large Programme with APEX to
map the Sunyaev-Zeldovich decrement at 2 mm with an angular
resolution of 1 arcminute in about 50 galaxy clusters
distributed over a large range of redshifts. The
observations were done between 2007 and 2010. Both isolated
and merging clusters were observed, as well as part of the
XMM-LSS field. Individual clusters are studied and the
sample will be used to constrain mass-SZ observable scaling
relations. I will also present APEX observations of the 870
micron emission toward the Bullet Cluster; there, the
extended SZ increment needs to be carefully separated from
the background point sources (submm galaxies)
gravitationally lensed by the mass distribution in the
Bullet Cluster.
