基于SPT-3G 2018年数据的CMB E模偏振和温度-E模关联测量
宇宙学与河外天体物理
2021-07-21 v1
摘要
我们利用南极望远镜最新仪器SPT-3G收集的数据，给出了宇宙微波背景的模（）偏振功率谱和温度-模（）交叉功率谱的测量结果。本分析使用了2018年四个月期间在95、150和220 GHz对1500平方度区域进行的观测。我们报告了角多极矩范围内和功率谱的带值，利用多频数据构建了每个功率谱的六个半独立估计及其最小方差组合。这些测量改进了SPTpol在的和的多极矩范围内的先前结果，得到的宇宙学参数约束与其他当前领先的地面实验相当。我们发现SPT-3G数据集与CDM宇宙学模型拟合良好，参数约束与Planck和SPTpol数据一致。仅使用SPT-3G数据，我们得到和，引力透镜振幅与CDM预测一致（）。我们将SPT-3G和Planck数据集结合，获得了CDM模型的联合约束。六维CDM参数空间68%置信区域的体积相比仅Planck约束缩小了1.5倍，中心值仅有微小偏移。我们注意到，这里呈现的结果仅来自半个典型观测季节的数据，且焦平面仅部分运行；自2018年后，SPT-3G观测的有效探测器数量已几乎翻倍。
引用
@article{arxiv.2101.01684,
title = {Measurements of the E-Mode Polarization and Temperature-E-Mode Correlation of the CMB from SPT-3G 2018 Data},
author = {D. Dutcher and L. Balkenhol and P. A. R. Ade and Z. Ahmed and E. Anderes and A. J. Anderson and M. Archipley and J. S. Avva and K. Aylor and P. S. Barry and R. Basu Thakur and K. Benabed and A. N. Bender and B. A. Benson and F. Bianchini and L. E. Bleem and F. R. Bouchet and L. Bryant and K. Byrum and J. E. Carlstrom and F. W. Carter and T. W. Cecil and C. L. Chang and P. Chaubal and G. Chen and H. -M. Cho and T. -L. Chou and J. -F. Cliche and T. M. Crawford and A. Cukierman and C. Daley and T. de Haan and E. V. Denison and K. Dibert and J. Ding and M. A. Dobbs and W. Everett and C. Feng and K. R. Ferguson and A. Foster and J. Fu and S. Galli and A. E. Gambrel and R. W. Gardner and N. Goeckner-Wald and R. Gualtieri and S. Guns and N. Gupta and R. Guyser and N. W. Halverson and A. H. Harke-Hosemann and N. L. Harrington and J. W. Henning and G. C. Hilton and E. Hivon and G. P. Holder and W. L. Holzapfel and J. C. Hood and D. Howe and N. Huang and K. D. Irwin and O. B. Jeong and M. Jonas and A. Jones and T. S. Khaire and L. Knox and A. M. Kofman and M. Korman and D. L. Kubik and S. Kuhlmann and C. -L. Kuo and A. T. Lee and E. M. Leitch and A. E. Lowitz and C. Lu and S. S. Meyer and D. Michalik and M. Millea and J. Montgomery and A. Nadolski and T. Natoli and H. Nguyen and G. I. Noble and V. Novosad and Y. Omori and S. Padin and Z. Pan and P. Paschos and J. Pearson and C. M. Posada and K. Prabhu and W. Quan and S. Raghunathan and A. Rahlin and C. L. Reichardt and D. Riebel and B. Riedel and M. Rouble and J. E. Ruhl and J. T. Sayre and E. Schiappucci and E. Shirokoff and G. Smecher and J. A. Sobrin and A. A. Stark and J. Stephen and K. T. Story and A. Suzuki and K. L. Thompson and B. Thorne and C. Tucker and C. Umilta and L. R. Vale and K. Vanderlinde and J. D. Vieira and G. Wang and N. Whitehorn and W. L. K. Wu and V. Yefremenko and K. W. Yoon and M. R. Young},
journal= {arXiv preprint arXiv:2101.01684},
year = {2021}
}