180122期:银河中心身临其境的可视化图像

银河中心身临其境的可视化图像

如果从银河系的中心往外看,你能看到什么,你又会发现什么呢?在这个视频中展示了两种根据科学研究确定下来的可能性。图中的计算机模拟是基于智利ESO超大型望远镜红外数据以及美国宇航局(NASA)的钱德拉X射线天文台(Chandra X-ray Observatory)的X射线数据。随着视频开始,你快速的飞到银河中心超大质量黑洞Sgr A *。接下来往外看,这个长达500年的时间推移模拟显示了银河中心一些发光的气体及围绕着你周围的许多光点。其中许多光点都是年轻的沃尔夫-拉叶星,以可见的热风吹向周围的星云。近距离接近的云气在形状上会被拉长,靠得太近的云气则会掉进去。在视频结束的时候会模拟重复,但是这次的模拟是关于围绕着Sgr A *的动态区域排出高温气体来推动接近物质。

:银河说翻译组 岑

An Immersive Visualization of the Galactic Center 
Video Credit: NASACXCPontifical Catholic Univ. of ChileC. Russell et al.

Explanation: What if you could look out from the center of our Galaxy — what might you see? Two scientifically-determined possibilities are shown in the featured video, an immersive 360-degree view which allows you to look around in every direction. The pictured computer simulation is based on infrared data from ESO‘s Very Large Telescope in Chile and X-ray data from NASA‘s orbitingChandra X-ray Observatory. As the video starts, you quickly approach Sgr A*, the supermassive black hole in the Galactic center. Then looking out, this 500-year time-lapse simulation shows glowing gas and many points of light orbiting all around you. Many of these points are young Wolf-Rayet stars that have visible hot winds blowing out into surrounding nebulas. Clouds approaching close become elongated, while objects approaching too close fall in. Toward the video’s end the simulation repeats, but this time with the dynamic region surrounding Sgr A*expelling hot gas that pushes back against approaching material.

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