论文标题
Planck数据版本4的宇宙双折射4
Cosmic Birefringence from Planck Data Release 4
论文作者
论文摘要
我们使用Planck数据版本4搜索宇宙微波背景中平均侵略物理的签名，称为宇宙双发性杂志。我们最初找到了几乎全套的数据，我们最初找到了$β= 0.30 \ pm0.11 $（68％c.l.）的双重双向角度。随着我们扩大银河面膜的限制，$β$的值会减小，这可以解释为极化前景发射的效果。建模这种效果的两种独立方法用于减轻对不同天空级分的$β$的系统影响。我们选择不将宇宙学意义分配给$β$的测量值，直到我们提高对前景极化的了解。
We search for the signature of parity-violating physics in the cosmic microwave background, called cosmic birefringence, using the Planck data release 4. We initially find a birefringence angle of $β=0.30\pm0.11$ (68% C.L.) for nearly full-sky data. The values of $β$ decrease as we enlarge the Galactic mask, which can be interpreted as the effect of polarized foreground emission. Two independent ways to model this effect are used to mitigate the systematic impact on $β$ for different sky fractions. We choose not to assign cosmological significance to the measured value of $β$ until we improve our knowledge of the foreground polarization.
