论文标题
CMB Y型扭曲的E和B模式：偏振动力学Sunyaev-Zeldovich效应从电回离和重新离子化时代的效果
E and B modes of the CMB y-type distortions: polarised kinetic Sunyaev-Zeldovich effect from the reionisation and post-reionisation eras
论文作者
论文摘要
我们研究了宇宙微波背景（CMB）的E和B模式极化，该宇宙化源自自由电子的横向特殊速度，在扰动理论中，在重新离子化和重新离子化后消毒期间。有趣的是，这种两极化的Sunyaev-Zeldovich（SZ）效应的光谱可以分解为黑体部分和Y型失真。 y渗透部分与主要的E和B模式以及镜头B模式可区分。此外，它也与其他Y型信号（例如Thermal SZ效应）也有区别，这些信号是未偏振的。我们表明，该信号对回电历史敏感，尤其是对回电的速度的敏感。 Y型失真的E和B模式提供了一种击败主要CMB各向异性的宇宙差异的方法，并且是宇宙学参数的独立探针。 PKSZ效应的黑体组件将是张量与标量比$ r \ lyssim 3 \ times10^{ - 5} $的原始张量模式的重要前景。
We study the E and B mode polarisation of the cosmic microwave background (CMB) originating from the transverse peculiar velocity of free electrons, at second order in perturbation theory, during the reionisation and post-reionisation eras. Interestingly, the spectrum of this polarised kinetic Sunyaev-Zeldovich (SZ) effect can be decomposed into a blackbody part and a y-type distortion. The y-distortion part is distinguishable from the primary E and B modes and also the lensing B modes. Furthermore, it is also differentiable from the other y-type signals, such as the thermal SZ effect, which are unpolarised. We show that this signal is sensitive to the reionisation history, in particular to how fast reionisation happens. The E and B modes of y-type distortion provide a way to beat the cosmic variance of primary CMB anisotropies and are an independent probe of the cosmological parameters. The blackbody component of the pkSZ effect would be an important foreground for the primordial tensor modes for tensor to scalar ratio $r \lesssim 3\times10^{-5}$.
