论文标题
Meerkat揭示了一个奇数无线电圈的物理
MeerKAT uncovers the physics of an Odd Radio Circle
论文作者
论文摘要
奇数无线电圆（兽人）最近发现了无线电发射的微弱弥漫性循环圆，未知原因，围绕中等红移的星系（$ z〜0.2-0.6）。在这里，我们在第一个兽人的1284 MHz上介绍了详细的新Meerkat无线电图像，最初是用澳大利亚平方公里阵列探路者发现的，具有更高的分辨率（6 arcsec）和灵敏度（〜2.4 UJY/BM）。 除了揭示了由多个弧线组成的复杂内部结构的新图像外，我们还呈现极化和光谱指数图。基于这些新数据，我们考虑可能生成兽人的潜在机制。
Odd Radio Circles (ORCs) are recently-discovered faint diffuse circles of radio emission, of unknown cause, surrounding galaxies at moderate redshift ($z ~ 0.2-0.6). Here we present detailed new MeerKAT radio images at 1284 MHz of the first ORC, originally discovered with the Australian Square Kilometre Array Pathfinder, with higher resolution (6 arcsec) and sensitivity (~ 2.4 uJy/bm). In addition to the new images, which reveal a complex internal structure consisting of multiple arcs, we also present polarisation and spectral index maps. Based on these new data, we consider potential mechanisms that may generate the ORCs.
