We present a radio polarization study of the supernova remnant CTB 80 based on images at 1420 MHz from the Canadian Galactic Plane Survey, at 2695 MHz from the Effelsberg survey of the Galactic plane and at 4800 MHz from the Sino-German λ6 cm polarization survey of the Galactic plane. We obtained a rotation measure (RM) map using polarization angles at 2695 MHz and 4800 MHz as the polarization percentages are similar at these two frequencies. RM exhibits a transition from positive values to negative values along one of the shells hosting the pulsar PSR B1951+32 and its pulsar wind nebula. The reason for the change in sign remains unclear. We identified a partial shell structure, which is bright in polarized intensity but weak in total intensity. This structure could be part of CTB 80 or part of a new supernova remnant unrelated to CTB 80.

我们基于来自加拿大银河平面调查的 1420 MHz 图像、来自 Effelsberg 银河平面调查的 2695 MHz 和来自中德 λ6 cm 极化调查的 4800 MHz 图像，提出了超新星遗迹 CTB 80 的无线电极化研究。银河平面。我们使用 2695 MHz 和 4800 MHz 的极化角获得了旋转测量 (RM) 图，因为这两个频率的极化百分比相似。RM 沿着包含脉冲星 PSR B1951+32 及其脉冲星风星云的壳之一呈现从正值到负值的转变。符号变化的原因尚不清楚。我们确定了一个部分壳结构，其偏振强度明亮但总强度较弱。这种结构可能是 CTB 80 的一部分，也可能是与 CTB 80 无关的新超新星遗迹的一部分。