论文标题
在曲率辐射方案中快速无线电突发的圆形极化
Circular polarization of fast radio bursts in the curvature radiation scenario
论文作者
论文摘要
曲率辐射应用于解释FRB的圆极化。在显然不重复和重复的FRB中均报道了明显的圆极化。曲率辐射可以在辐射束的机翼上产生明显的圆极化。在曲率辐射的情况下，为了看到FRB中的显着圆极化（1）更势力的爆发，（2）带有具有较高Lorentz因子的电子的爆发，（3）需要在中心缓慢旋转中子星。中央中子恒星的不同旋转周期可能解释了为什么有些FRB具有高圆极化，而另一些则没有。考虑到电场的平行和垂直部件的折射率可能差异，位置角可能会在辐射束的狭窄脉冲窗口上迅速变化。除旋转向量模型外，FRB中的位置角摆动也可以通过这种非几何形式来解释。
The curvature radiation is applied to the explain the circular polarization of FRBs. Significant circular polarization is reported in both apparently non-repeating and repeating FRBs. Curvature radiation can produce significant circular polarization at the wing of the radiation beam. In the curvature radiation scenario, in order to see significant circular polarization in FRBs (1) more energetic bursts, (2) burst with electrons having higher Lorentz factor, (3) a slowly rotating neutron star at the centre are required. Different rotational period of the central neutron star may explain why some FRBs have high circular polarization, while others don't. Considering possible difference in refractive index for the parallel and perpendicular component of electric field, the position angle may change rapidly over the narrow pulse window of the radiation beam. The position angle swing in FRBs may also be explained by this non-geometric origin, besides that of the rotating vector model.
