论文标题
同时确定宇宙双折射和误校准的极化角度II：包括跨频光谱
Simultaneous determination of the cosmic birefringence and miscalibrated polarization angles II: Including cross frequency spectra
论文作者
论文摘要
我们制定了一种策略，以确定宇宙微波背景和银河前景发射的观察到的$ eb $极化功率光谱同时确定宇宙双折射和误校准的极化角度。我们扩展了Y. Minami等人的方法。 （Prog。Theor。phy。phys。$ \ Mathbf {2019} $，083E02，2019），它是为自动频率谱而开发的，它是通过包括跨频率光谱而开发的。通过在不同频带处拟合一个全局的双向角度和独立的错误校准角，我们确定了与自动光谱相比，两个角度的不确定性明显较小（超过两个倍）。
We develop a strategy to determine the cosmic birefringence and miscalibrated polarization angles simultaneously using the observed $EB$ polarization power spectra of the cosmic microwave background and the Galactic foreground emission. We extend the methodology of Y. Minami et al. (Prog. Theor. Exp. Phys. $\mathbf{2019}$, 083E02, 2019), which was developed for auto frequency power spectra, by including cross frequency spectra. By fitting one global birefringence angle and independent miscalibration angles at different frequency bands, we determine both angles with significantly smaller uncertainties (by more than a factor of two) compared to the auto spectra.
