Dark energy from clusters: ATCA preliminaries

Details Dark energy from clusters: ATCA preliminaries Dark energy from clusters: ATCA preliminaries

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1537w&link_type=abstract

ATNF proposal C1563, Semester: April, 2008

Physics

Extragalactic, Atca

Scientific paper

Dark energy is a hypothetical form of energy which permeates all of space and has strong negative pressure. The South Pole Submillimeter Telescope (SPT) is a 10m class radiotelescope currently surveying galaxy clusters to determine the equation of state of the dark energy. An important issue is that approximately 7% of the clusters will have their SPT signature reduced by radio emission from galaxies in the cluster. We propose ATCA observations of these galaxies at frequencies close to the SPT frequencies to quantify this effect. ATCA observations will also be used to calibrate SPT data. Our previous observations have been affected by weather - we did not reach our detection limit.

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