基于670平方度POLARBEAR巡天的度尺度CMB B模偏振功率的改进上限
宇宙学与河外天体物理
2022-06-17 v2 天体物理仪器与方法
摘要
我们报道了利用POLARBEAR在150 GHz、670平方度天区上对度尺度宇宙微波背景模角功率谱的改进测量。在数据的原始分析中，连续旋转半波片（一种偏振调制器）的角度测量误差导致了显著的数据损失。通过引入角度校正算法，数据量增加了1.8倍。我们报道了使用这一更大数据集的新分析。我们发现测得的模谱与带有银河系尘埃前景的CDM模型一致。我们通过将我们的数据与Planck 143、217和353 GHz测量进行交叉相关来估计前景的污染，其中其谱在角尺度上建模为幂律、在频率上建模为修正黑体。在边缘化前景参数后，我们以95%置信水平对张量-标量比给出上限。
引用
@article{arxiv.2203.02495,
title = {Improved upper limit on degree-scale CMB B-mode polarization power from the 670 square-degree POLARBEAR survey},
author = {The POLARBEAR Collaboration and S. Adachi and T. Adkins and M. A. O. Aguilar Faúndez and K. S. Arnold and C. Baccigalupi and D. Barron and S. Chapman and K. Cheung and Y. Chinone and K. T. Crowley and T. Elleflot and J. Errard and G. Fabbian and C. Feng and T. Fujino and N. Galitzki and N. W. Halverson and M. Hasegawa and M. Hazumi and H. Hirose and L. Howe and J. Ito and O. Jeong and D. Kaneko and N. Katayama and B. Keating and T. Kisner and N. Krachmalnicoff and A. Kusaka and A. T. Lee and E. Linder and A. I. Lonappan and L. N. Lowry and F. Matsuda and T. Matsumura and Y. Minami and M. Murata and H. Nishino and Y. Nishinomiya and D. Poletti and C. L. Reichardt and C. Ross and Y. Segawa and P. Siritanasak and R. Stompor and A. Suzuki and O. Tajima and S. Takakura and S. Takatori and D. Tanabe and G. Teply and K. Yamada and Y. Zhou},
journal= {arXiv preprint arXiv:2203.02495},
year = {2022}
}
备注
16 pages, 9 figures, 8 tables, Published in ApJ