Title:
Forecast for Neutrino Mass Constraints from SZ Surveys
Abstract:
Since the growth of structure in the universe begins at the time of
radiation-matter equality (~0.4 eV) all tracers of dark matter clustering
are expected to be sensitive to this or smaller energy scales. We explore
the possibility of using galaxy cluster number counts, as well as cluster
correlations, obtained from ongoing SZ surveys (such as SPT and PLANCK)
and a possible future CMB space mission (EPIC) to set upper bounds on the
total neutrino mass. The expected 1-sigma constraints from the SZ surveys
of SPT, PLANCK and EPIC are 0.44, 0.28 and 0.12 eV, respectively, if the
information encoded in the lensed-CMB is ignored.