用 POLARBEAR 对度尺度 CMB B 模角功率谱的测量
宇宙学与河外天体物理
2021-01-15 v1
摘要
我们给出了利用 POLARBEAR 实验在 2014 年 7 月至 2016 年 12 月期间取得的观测数据对宇宙微波背景（CMB）的 模偏振功率谱的测量。CMB 功率谱使用 150 GHz 的观测测得，其瞬时阵列灵敏度为 ，天区为以 (RA, Dec)=() 为中心的 670 平方度天区。使用连续旋转的半波片来调制偏振并抑制低频噪声。我们实现了 - 的有效偏振图噪声，灵敏度拐点位于 ，此处正是暴胀引力波信号预期达到峰值的位置。测得的 模功率谱在 的多极子范围内与 CDM 透镜化和单一尘埃成分前景模型一致。仅使用该 范围的 POLARBEAR 数据，数据在 上否定零 。我们将数据与 Planck 高频图做交叉相关，发现合并数据集中的低 模功率与热尘埃发射一致。在边际化前景后，我们以 95% 置信水平给出张量-标量比的上限 。
引用
@article{arxiv.1910.02608,
title = {A Measurement of the Degree Scale CMB B-mode Angular Power Spectrum with POLARBEAR},
author = {S. Adachi and M. A. O. Aguilar Faúndez and K. Arnold and C. Baccigalupi and D. Barron and D. Beck and S. Beckman and F. Bianchini and D. Boettger and J. Borrill and J. Carron and S. Chapman and K. Cheung and Y. Chinone and K. Crowley and A. Cukierman and M. Dobbs and H. El Bouhargani and T. Elleflot and J. Errard and G. Fabbian and C. Feng and T. Fujino and N. Galitzki and N. Goeckner-Wald and J. Groh and G. Hall and N. Halverson and T. Hamada and M. Hasegawa and M. Hazumi and C. A. Hill and L. Howe and Y. Inoue and G. Jaehnig and O. Jeong and D. Kaneko and N. Katayama and B. Keating and R. Keskitalo and S. Kikuchi and T. Kisner and N. Krachmalnicoff and A. Kusaka and A. T. Lee and D. Leon and E. Linder and L. N. Lowry and A. Mangu and F. Matsuda and Y. Minami and M. Navaroli and H. Nishino and A. T. P. Pham and D. Poletti and G. Puglisi and C. L. Reichardt and Y. Segawa and M. Silva-Feaver and P. Siritanasak and N. Stebor and R. Stompor and A. Suzuki and O. Tajima and S. Takakura and S. Takatori and D. Tanabe and G. P. Teply and C. Tsai and C. Verges and B. Westbrook and Y. Zhou},
journal= {arXiv preprint arXiv:1910.02608},
year = {2021}
}