动画：奇怪的无线电圈
(原标题: Animation: Odd Radio Circles)
2022-03-30
浏览次数: 20
你怎么称呼一个没人预料到的宇宙谜题？在这种情况下，奇怪的无线电圈，又名兽人。ORC-1是2019年使用新的澳大利亚SKA探路者无线电阵列偶然发现的五个神秘物体的典型代表，这些物体只能在无线电频率上可见。特色视频中的最终图像使用2021年南非MeerKAT阵列的数据来揭示更多细节。无线电数据被指定为蓝绿色，与暗能量调查光学/红外地图结合在一起。这位动画艺术家的插图只探讨了兽人起源的一个想法。如果两个超大质量黑洞在星系中心合并，相关的冲击波可能会产生射电辐射环。它们会长大，填满整个视频帧。这段视频缩小了，这样就可以追踪到ORC的膨胀，直到它的直径达到大约一百万光年。幸运的是，即将到来的平方公里阵列可以帮助测试这个和其他有希望的场景。
查看原文解释
What do you call a cosmic puzzle that no one expected to see? In this case, Odd Radio Circles, aka ORCs. ORC-1 typifies the enigmatic five objects, only visible at radio frequencies, that were serendipitously discovered in 2019 using the new Australian SKA Pathfinder radio array. The final image in the featured video uses 2021 data from the South African MeerKAT array to reveal more detail. The radio data, assigned turquoise colors, are combined with a Dark Energy Survey optical/IR map. The animated artist’s illustration explores just one idea about the ORCs’ origins. If two supermassive black holes merge in the center of a galaxy, the associated shockwaves could generate rings of radio radiation. These grow to fill the video frame. The video zooms out so the expansion the ORC can be tracked until it is about a million light-years across. Fortunately, the up-coming Square Kilometer Array can help test this and other promising scenarios.