圆二色性、磁结和宇宙微波背景的偏振光谱
Circular dichroism, magnetic knots and the spectropolarimetry of the Cosmic Microwave Background
摘要：
当最后一次电子-光子散射发生在磁化环境中时，出射辐射的圆偏振度取决于磁场强度。在导出散射矩阵的基础上，导出了考虑相对论涨落的广义辐射转移方程。新的方程组求解的假设下，入射辐射是不偏振的。分析和数值计算的诱导V模式偏振。计算相应的角功率谱，并与线性偏振（即E-模式和B-模式）的测量（或声称）值进行比较，因为它们出现在和谐模型及其相邻的扩展。概述了宇宙微波背景的V-模式偏振和相等之前的磁通量线的拓扑性质之间可能存在的联系，并与磁化太阳黑子的物理学进行了类比。
英文摘要：
When the last electron-photon scattering takes place in a magnetized environment, the degree of circular polarization of the outgoing radiation depends upon the magnetic field strength. After deriving the scattering matrix of the process, the generalized radiative transfer equations are deduced in the presence of the relativistic fluctuations of the geometry and for all the four brightness perturbations. The new system of equations is solved under the assumption that the incident radiation is not polarized. The induced V-mode polarization is analyzed both analytically and numerically. The corresponding angular power spectra are calculated and compared with the measured (or purported) values of the linear polarizations (i.e. E-mode and B-mode) as they arise in the concordance model and in its neighboring extensions. Possible connections between the V-mode polarization of the Cosmic Microwave background and the topological properties of the magnetic flux lines prior to equality are outlined and briefly explored in analogy with the physics of magnetized sun spots.
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