标题： 来自BICEP2、Planck和WMAP的宇宙参数限制 显示英文标题

标题： Constraints on the cosmological parameters from BICEP2, Planck and WMAP

摘要： 本文利用宇宙微波背景极化（BICEP2，简称B2）、2013年发布的普朗克卫星数据（P13）以及威尔金森微波各向异性探测器9年极化数据（WP），限制了宇宙学参数，特别是张量功率谱的倾斜。我们发现，如果假设B2的数据完全由遗留的引力波组成，则蓝倾斜的张量功率谱在大于$3\sigma$的置信度下更受青睐；然而，一旦考虑极化尘埃的影响，标度不变的张量功率谱与数据是一致的。最近发布的普朗克353 GHz HFI尘埃极化数据显示，B2的数据与不存在引力波信号是一致的。 显示英文摘要

摘要： In this paper we constrain the cosmological parameters, in particular the tilt of tensor power spectrum, by adopting Background Imaging of Cosmic Extragalactic Polarization (B2), Planck released in 2013 (P13) and Wilkinson Microwaves Anisotropy Probe 9-year Polarization (WP) data. We find that a blue tilted tensor power spectrum is preferred at more than $3\sigma$ confidence level if the data from B2 are assumed to be totally interpreted as the relic gravitational waves, but a scale invariant tensor power spectrum is consistent with the data once the polarized dust is taken into account. The recent Planck 353 GHz HFI dust polarization data imply that the B2 data are perfectly consistent with there being no gravitational wave signal.