论文标题
银河系介质具有磁错位的首选手法
The Galactic interstellar medium has a preferred handedness of magnetic misalignment
论文作者
论文摘要
普朗克任务检测到了银河热粉尘发射的强度（$ t $）和$ b $ mode极化之间的正相关。 $ tb $相关性是一个奇异信号，其统计平均值在具有镜子对称性的模型中消失。最近的工作表明，有充分的证据表明，灰尘丝和天空投影磁场之间未对准的本地交接性会产生$ TB $信号。但是，目前尚不清楚观察到的全局$ TB $信号是由磁错位角度的统计波动引起的，还是星际介质中的某些奇偶校验物理学是否设定了首选错误对准。目前的工作旨在对基于极性粉尘发射的基于细丝的模拟来确定统计 - 透明解释的自信解释的定量陈述。我们使用公开可用的DustFilaments代码来模拟磁性未对准角度对称随机的细丝的灰尘发射，并构建$ξ_{p} $的概率密度函数，这是$ tb $ power Spectrum的加权总和。我们发现，Planck数据具有$ \ gtrsim10σ$张力，并具有模拟$ξ_{p} $分布。我们的结果强烈支持银河丝错位具有首选的惯性，其物理起源尚未确定。
The Planck mission detected a positive correlation between the intensity ($T$) and $B$-mode polarization of the Galactic thermal dust emission. The $TB$ correlation is a parity-odd signal, whose statistical mean vanishes in models with mirror symmetry. Recent work has shown with strong evidence that local handedness of the misalignment between the dust filaments and the sky-projected magnetic field produces $TB$ signals. However, it remains unclear whether the observed global $TB$ signal is caused by statistical fluctuations of magnetic misalignment angles, or whether some parity-violating physics in the interstellar medium sets a preferred misalignment handedness. The present work aims to make a quantitative statement about how confidently the statistical-fluctuation interpretation is ruled out by filament-based simulations of polarized dust emission. We use the publicly available DUSTFILAMENTS code to simulate the dust emission from filaments whose magnetic misalignment angles are symmetrically randomized, and construct the probability density function of $ξ_{p}$, a weighted sum of $TB$ power spectrum. We find that Planck data has a $\gtrsim 10σ$ tension with the simulated $ξ_{p}$ distribution. Our results strongly support that the Galactic filament misalignment has a preferred handedness, whose physical origin is yet to be identified.
