论文标题
发现巨型射电星系GRG的X形形态0503-286
Discovery of X-shaped Morphology of the Giant Radio Galaxy GRG 0503-286
论文作者
论文摘要
在70-230 MHz处的巨型射电星系GRG 0503-28的闪光调查图像的高表面亮度敏感性显示，其两个裂片的反转对称弯曲，同时保持弯曲部分之间的弯曲部分约200 kpc宽条带状式无线电发射发射空间。这为巨型X形射电星系的外观提供了来源。通过存在气态层的存在（可能是宇宙网络中的一个质薄板），我们建议该层是两个无线电裂片的反演对称弯曲的原因。注意到这种气态层的多种观察表现。该GRG的两个裂片（已知与宿主星系非常不对称的延伸非常不对称）对发射缝隙显着对称，这证实了正常尺寸的双重无线电源早些时候提到的一个好奇趋势。该GRG的北叶报道的无线电光谱梯度无法证实。
The high surface-brightness sensitivity of the GLEAM survey image of the giant radio galaxy GRG 0503-28 at 70-230 MHz has revealed an inversion-symmetric bending of its two lobes, while maintaining between their bent portions a ~200 kpc wide strip-like radio emission gap. This lends the source the appearance of a mega-sized X-shaped radio galaxy. Identifying the emission gap with the presence of a gaseous layer, probably a WHIM-filled sheet in the cosmic web, we suggest that the layer is the most likely cause of the inversion-symmetric bending of the two radio lobes. Multiple observational manifestations of such gaseous layers are noted. The two lobes of this GRG, known to extend very asymmetrically from the host galaxy, are remarkably symmetric about the emission gap, confirming a curious trend noted earlier for double radio sources of normal dimensions. The anomalous radio spectral gradient reported for the northern lobe of this GRG is not substantiated.
