论文标题

来自不均匀同步源的圆极化

Circular polarisation from inhomogeneous synchrotron sources

论文作者

Bjornsson, C. -I.

论文摘要

不均匀性会影响从同步加速器来源出现的极化。然而,结果表明,圆极化的频率分布仅受到略有影响,尽管其幅度可能会发生很大变化。这是用来说明紧凑型无线电源的观察到的特性,暗示着一个辐射的血浆,其中特征波几乎是圆形的。结果,可以将限制放在相对论电子的能量分布的低能部分以及电子峰值对的存在上。有人强调,这种相对论电子加速过程的理论建模限制了理论建模。例如,一些当前流行的方案似乎需要修改以与观察一致。

Inhomogeneities can influence the polarisation emerging from a synchrotron source. However, it is shown that the frequency distribution of circular polarisation is only marginally affected, although its magnitude may change substantially. This is used to argue that the observed properties of compact radio sources imply a radiating plasma in which the characteristic waves are nearly circular. As a result, restrictions can be put on the low energy part of the energy distribution of the relativistic electrons as well as the presence of electron-positron pairs. It is emphasised that this constrains theoretical modelling of the acceleration process for the relativistic electrons; for example, some of the currently popular scenarios seem to need modifications to become consistent with observations.

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