磁激活等离子体中的宇宙偏振测量
Cosmic polarimetry in magnetoactive plasmas
摘要：
宇宙微波背景（CMB）的偏振测量代表了一种可能的诊断方法，旨在测试光子退耦时期的大尺度磁性。电磁扰动在磁化等离子体中的传播自然会导致B模极化，其角功率谱在此用解析法和数值法计算。结合分析所有公开可用的数据上的B模式偏振，第一次，在光的磁化$Λ$ CDM方案。新的约束条件前平等的磁性也来自鉴于目前和预期的灵敏度的B-模式极化。
英文摘要：
Polarimetry of the Cosmic Microwave Background (CMB) represents one of the possible diagnostics aimed at testing large-scale magnetism at the epoch of the photon decoupling. The propagation of electromagnetic disturbances in a magnetized plasma leads naturally to a B-mode polarization whose angular power spectrum is hereby computed both analytically and numerically. Combined analyses of all the publicly available data on the B-mode polarization are presented, for the first time, in the light of the magnetized $Λ$CDM scenario. Novel constraints on pre-equality magnetism are also derived in view of the current and expected sensitivities to the B-mode polarization.
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