BICEP2/Keck Array VI：加入Keck Array的95 GHz数据后对宇宙学与前景辐射的改进约束
宇宙学与河外天体物理
2016-03-15 v2
摘要
我们展示了针对BICEP2和Keck Array CMB偏振实验截至并包括2014观测季所取全部数据的分析结果。这包括Keck Array在95 GHz的首次观测。在150 GHz波段，图在斯托克斯和上达到50 nK deg深度，在95 GHz波段达到127 nK deg深度。我们取这些图与来自WMAP和Planck在23 GHz至353 GHz频率的公开图之间的自谱和互谱。在95x150 谱中检测到相对于透镜化LCDM的适度显著超出，且与我们之前工作预期的尘埃贡献一致。在诸如23x95等谱中未发现同步辐射的显著证据，在诸如23x353等谱中未发现尘埃与同步辐射天空图之间的相关性。我们采用所有谱的似然，用于一个多成分模型，包括透镜化LCDM、尘埃、同步辐射以及可能的暴胀引力波贡献（由张量-标量比参数化），使用来自先前对其他天区WMAP和Planck数据分析的尘埃和同步辐射频率光谱行为的先验。该分析给出在95%置信度上界，这对分析和先验中探索的变体是稳健的。将这些模结果与来自Planck对CMB温度加BAO及其他数据分析的（更依赖模型的）约束结合，得到在95%置信度联合限制。这些是迄今对暴胀引力波的最强约束。
引用
@article{arxiv.1510.09217,
title = {BICEP2 / Keck Array VI: Improved Constraints On Cosmology and Foregrounds When Adding 95 GHz Data From Keck Array},
author = {Keck Array and BICEP2 Collaborations and : and P. A. R. Ade and Z. Ahmed and R. W. Aikin and K. D. Alexander and D. Barkats and S. J. Benton and C. A. Bischoff and J. J. Bock and R. Bowens-Rubin and J. A. Brevik and I. Buder and E. Bullock and V. Buza and J. Connors and B. P. Crill and L. Duband and C. Dvorkin and J. P. Filippini and S. Fliescher and J. Grayson and M. Halpern and S. Harrison and G. C. Hilton and H. Hui and K. D. Irwin and K. S. Karkare and E. Karpel and J. P. Kaufman and B. G. Keating and S. Kefeli and S. A. Kernasovskiy and J. M. Kovac and C. L. Kuo and E. M. Leitch and M. Lueker and K. G. Megerian and C. B. Netterfield and H. T. Nguyen and R. O'Brient and R. W. Ogburn and A. Orlando and C. Pryke and S. Richter and R. Schwarz and C. D. Sheehy and Z. K. Staniszewski and B. Steinbach and R. V. Sudiwala and G. P. Teply and K. L. Thompson and J. E. Tolan and C. Tucker and A. D. Turner and A. G. Vieregg and A. C. Weber and D. V. Wiebe and J. Willmert and C. L. Wong and W. L. K. Wu and K. W. Yoon},
journal= {arXiv preprint arXiv:1510.09217},
year = {2016}
}
备注
17 pages, 18 figures, minor updates to reflect accepted version, data and figures available for download at http://bicepkeck.org/