Sunyaev-Zel'dovich Cluster Profiles Measured with the South Pole Telescope
T. Plagge, B. A. Benson, P. A. R. Ade, K. A. Aird, L. E. Bleem, J. E., Carlstrom, C. L. Chang, H.-M. Cho, T. M. Crawford, A. T. Crites, T. de Haan,, M. A. Dobbs, E. M. George, N. R. Hall, N. W. Halverson, G. P. Holder, W. L., Holzapfel, J. D. Hrubes, M. Joy, R. Keisler, L. Knox

TL;DR
This paper presents measurements of the Sunyaev-Zel'dovich effect in 15 galaxy clusters using the South Pole Telescope, analyzing their profiles and scaling relations to improve understanding of cluster properties.
Contribution
First detailed SZ profiles of galaxy clusters from SPT data are modeled and compared to X-ray estimates, confirming consistency with previous models and establishing tight scaling relations.
Findings
SZ profiles fit well with beta and NFW models
Y_SZ correlates strongly with Y_X and gas mass
Profiles are consistent with previous studies
Abstract
We present Sunyaev-Zel'dovich measurements of 15 massive X-ray selected galaxy clusters obtained with the South Pole Telescope. The Sunyaev-Zel'dovich (SZ) cluster signals are measured at 150 GHz, and concurrent 220 GHz data are used to reduce astrophysical contamination. Radial profiles are computed using a technique that takes into account the effects of the beams and filtering. In several clusters, significant SZ decrements are detected out to a substantial fraction of the virial radius. The profiles are fit to the beta model and to a generalized NFW pressure profile, and are scaled and stacked to probe their average behavior. We find model parameters that are consistent with previous studies: beta=0.86 and r_core/r_500 = 0.20 for the beta model, and (alpha, beta, gamma, c_500)=(1.0,5.5,0.5,1.0) for the generalized NFW model. Both models fit the SPT data comparably well, and both are…
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