测量广义法拉第旋转的唯象模型
A phenomenological model for measuring generalised Faraday rotation
摘要：
广义法拉第旋转可以引起致密射电源，如射电星，快速射电暴和活动星系核的线性和圆偏振光谱之间的频率依赖的转换。我设计了一个简单的唯象模型，可用于测量广义法拉第旋转的线性和圆偏振光谱的这些来源的影响。该模型是理论不可知的，具有任意的波长依赖性，因此可以容纳各种潜在的广义法拉第旋转诱导介质。它也可以与其他观测量相结合，以推断介入介质的物理性质。
英文摘要：
Generalised Faraday rotation can induce frequency-dependent conversion between the linear and circular polarisation spectra of compact radio sources such as pulsars, fast radio bursts and active galactic nuclei. I devise a simple phenomenological model that can be used to measure the effects of generalised Faraday rotation on the linearly and circularly polarised spectra of these sources. The model is theory-agnostic, with an arbitrary wavelength dependence, and hence can accommodate for a variety of potential generalised Faraday rotation inducing media. It can also be combined with additional observables to infer the physical properties of the intervening medium.
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