X-ray Properties of the First SZE-selected Galaxy Cluster Sample from the South Pole Telescope
K. Andersson, B. A. Benson, P. A. R. Ade, K. A. Aird, B. Armstrong, M. Bautz, L. E. Bleem, M. Brodwin, J. E. Carlstrom, C. L. Chang, T. M. Crawford, A. T. Crite… 展开作者
K. Andersson, B. A. Benson, P. A. R. Ade, K. A. Aird, B. Armstrong, M. Bautz, L. E. Bleem, M. Brodwin, J. E. Carlstrom, C. L. Chang, T. M. Crawford, A. T. Crites, T. de Haan, S. Desai, M. A. Dobbs, J. P. Dudley, R. J. Foley, W. R. Forman, G. Garmire, E. M. George, M. D. Gladders, N. W. Halverson, F. W. High, G. P. Holder, W. L. Holzapfel, J. D. Hrubes, C. Jones, M. Joy, R. Keisler, L. Knox, A. T. Lee, E. M. Leitch, M. Lueker, D. P. Marrone, J. J. McMahon, J. Mehl, S. S. Meyer, J. J. Mohr, T. E. Montroy, S. S. Murray, S. Padin, T. Plagge, C. Pryke, C. L. Reichardt, A. Rest, J. Ruel, J. E. Ruhl, K. K. Schaffer, L. Shaw, E. Shirokoff, J. Song, H. G. Spieler, B. Stalder, Z. Staniszewski, A. A. Stark, C. W. Stubbs, K. Vanderlinde, J. D. Vieira, A. Vikhlinin, R. Williamson, Y. Yang, O. Zahn
我们目前的X射线观测的15个集群的样本，通过他们的印记上的宇宙微波背景（CMB）的热Sunyaev-Zel'dovich（SZ）效应。这些星团是第一个SZ选定的星团目录的一个子集，由南极望远镜对178度^2的天空进行观测获得。利用Chandra和XMM-Newton的X射线观测，我们估计了每个星系团在r_500以内的温度T_X和质量M_g。由此计算出Y_X=M_g T_X，并利用以前X射线研究中测得的M_（500）-Y_X标度关系估算了团簇的总质量。综合康普顿化，Y_SZ，是从SZ测量，使用额外的信息，从X射线测量的气体密度分布和一个通用的温度分布。我们计算了X射线和SZ观测值之间的标度关系，并发现结果与其他测量和简单自相似行为的预期基本一致。具体地说，我们拟合了Y_SZ-Y_X关系，并发现归一化为0.82 ± 0.07，与本工作中使用的密度和温度模型所预期的Y_SZ/Y_X=0.91 ± 0.01的预测比值略微一致。使用Y_X导出的质量估计，我们拟合了Y_SZ-M_500关系，发现斜率与Y_SZ ~ M ^5/3的自相似期望一致，归一化与其他X射线研究的预测一致。我们比较X射线质量估计以前发表的SZ质量估计来自宇宙学模拟的SPT调查。我们发现，SZ质量的估计值低了0.89+-0.06的一个因素，这是在~15%的系统不确定性引用的模拟为基础的SZ质量。
英文摘要：
We present results of X-ray observations of a sample of 15 clusters selected via their imprint on the cosmic microwave background (CMB) from the thermal Sunyaev-Zel'dovich (SZ) effect. These clusters are a subset of the first SZ-selected cluster catalog, obtained from observations of 178 deg^2 of sky surveyed by the South Pole Telescope. Using X-ray observations with Chandra and XMM-Newton, we estimate the temperature, T_X, and mass, M_g, of the intracluster medium (ICM) within r_500 for each cluster. From these, we calculate Y_X=M_g T_X and estimate the total cluster mass using a M_500-Y_X scaling relation measured from previous X-ray studies. The integrated Comptonization, Y_SZ, is derived from the SZ measurements, using additional information from the X-ray measured gas density profiles and a universal temperature profile. We calculate scaling relations between the X-ray and SZ observables, and find results generally consistent with other measurements and the expectations from simple self-similar behavior. Specifically, we fit a Y_SZ-Y_X relation and find a normalization of 0.82 +- 0.07, marginally consistent with the predicted ratio of Y_SZ/Y_X=0.91+-0.01 that would be expected from the density and temperature models used in this work. Using the Y_X derived mass estimates, we fit a Y_SZ-M_500 relation and find a slope consistent with the self-similar expectation of Y_SZ ~ M^5/3 with a normalization consistent with predictions from other X-ray studies. We compare the X-ray mass estimates to previously published SZ mass estimates derived from cosmological simulations of the SPT survey. We find that the SZ mass estimates are lower by a factor of 0.89+-0.06, which is within the ~15% systematic uncertainty quoted for the simulation-based SZ masses.
On the better constraints from the South Pole Telescope Sunyaev-Zel'dovich galaxy clusters survey: a FoM evaluation for the equation of state of Dark Energy
Multichroic TES Bolometers and Galaxy Cluster Mass Scaling Relations with the South Pole Telescope
南极望远镜（英语：South Pole Telescope）是一个高分辨率的微波频率望远镜，用于观测宇宙微波背景（CMB）。到目前为止，已经在SPT上安装了两台摄像机，对CMB进行了两次调查，第一次是强度调查（SPT-SZ），第二次是强度和偏振调查（SPTpol）。目前正在开发第三代偏振敏感相机（SPT-3G）。本论文介绍了工作跨越所有三个仪器上的SPT。我提出我的工作在时间颠倒的顺序，遵循仪器开发，部署和分析的规范叙述。首先，新的3波段多色过渡边缘传感器（TES）的SPT-3G实验测辐射热计的开发和测试进行了详细说明，其次是频率复用低温读出电子的SPTpol实验的开发和部署，并得出结论与SPT-SZ仪器所采取的数据分析。我描述了一个贝叶斯似然为基础的方法，我开发的测量综合康普顿化（YSZ）的星系团的Sunyaev-Zel 'dovich（SZ）效应，并限制星系团YSZ质量标度关系的发展。
Analysis of Sunyaev-Zel'dovich Effect Mass-Observable Relations using South Pole Telescope Observations of an X-ray Selected Sample of Low Mass Galaxy Clusters and Groups
BICEP/Keck XXII: Analysis of the South Pole Atmosphere for CMB Observations
Cardiff University（卡迪夫大学）；Stanford University（斯坦福大学）；SLAC National Accelerator Laboratory（SLAC国家加速器实验室）；University of British Columbia（不列颠哥伦比亚大学）；Center for Astrophysics, Harvard & Smithsonian（哈佛与史密森尼天体物理中心）；University of New Mexico（新墨西哥大学）；California Institute of Technology（加州理工学院）；University of Cincinnati（辛辛那提大学）；Jet Propulsion Laboratory, California Institute of Technology（加州理工学院喷气推进实验室）；University of Chicago（芝加哥大学）
