Other
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..apr.c9015k&link_type=abstract
American Physical Society, April Meeting, 2003, April 5-8, 2003 Philadelphia, Pennsylvania, MEETING ID: APR03, abstract #C9.015
Other
Scientific paper
As high-resolution microwave background measurements improve over the coming few years, large galaxy clusters will become increasingly important and interesting observational targets at microwave frequencies. I will discuss two basic signals. The first is the kinematic Sunyaev-Zeldovich effect, which provides a direct measurement of cluster peculiar velocity. Peculiar velocity catalogs constructed with this signal have the potential to probe the cosmic velocity field out to redshifts of order unity. The second is gravitational lensing of the microwave background by clusters, which will provide a direct cluster mass measurement with several technical advantages over weak lensing of background galaxies. Distinguishing these two signals from each other and from the primary microwave background temperature fluctuations will be one major systematic hurdle.
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