Back to Volume
Paper: Recent Results from the SuZIE Experiment: An Investigation of SZ Scaling Relationships
Volume: 339, Observing Dark Energy
Page: 157
Authors: Church, S.E.; Benson, B.A.; Thompson, K.L.
Abstract: Mapping the Sunyaev-Zel'dovich (SZ) effect over large areas of sky is a powerful way to detect clusters of galaxies. Future SZ cluster surveys will probe the growth of large-scale structure and so have the potential to determine the dark energy equation-of-state parameters. The accuracy with which this can be accomplished will depend on how well the relationship between SZ flux and cluster mass is understood. We have used data from SuZIE II (the second incarnation of the Sunyaev-Zel'dovich Infrared Experiment) to investigate scaling relations between integrated SZ flux and X-ray temperature, because the latter is already believed to be a good mass indicator. We find that there is a strong correlation between these two quantities, with the slope of the relationship being consistent with that expected from self-similar cluster evolution. By contrast, we find the SZ central decrement to be difficult to accurately extract from current SZ measurements, and thus a poor mass indicator.
Back to Volume