论文标题
从观察到的CMB和前景$ eb $ power Spectra的确定误导的极化角度：应用到部分天空观察
Determination of miscalibrated polarization angles from observed CMB and foreground $EB$ power spectra: Application to partial-sky observation
论文作者
论文摘要
我们研究了使用观察到的CMB和银河前景发射的$ EB $偏振功率谱的宇宙微波背景（CMB）实验的误解的极化角度的策略。我们应用了Minami等人（2019年）的方法，用于全天观测到基于地面的实验，例如Simons天文台。我们考虑了$ e $ -to $ to-b $泄漏和$ \ ell $ -to- $ \ ell $ $ $ $协方差，这是由于使用公共代码Namaster的部分天空覆盖范围。我们表明我们的方法得出了错误校准角度的公正估计。我们的方法还可以同时确定错误定量的角度和固有的$ eb $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ \ sqrt {c_ \ ell^{ee} c_ \ ell} c_ \ ell^\ ell^eell^{bb}}} $
We study a strategy to determine miscalibrated polarization angles of cosmic microwave background (CMB) experiments using the observed $EB$ polarization power spectra of CMB and Galactic foreground emission. We apply the methodology of Minami et al.(2019) developed for full-sky observations to ground-based experiments such as Simons Observatory. We take into account the $E$-to-$B$ leakage and $\ell$-to-$\ell$ covariance due to partial sky coverage using the public code NaMaster. We show that our method yields an unbiased estimate of miscalibrated angles. Our method also enables simultaneous determination of miscalibrated angles and the intrinsic $EB$ power spectrum of polarized dust emission when the latter is proportional to $\sqrt{C_\ell^{EE}C_\ell^{BB}}$ and $C_\ell^{BB}$ is proportional to $C_\ell^{EE}$.
