模拟TNG50：星系团的形成
(原标题: Simulation TNG50: A Galaxy Cluster Forms)
2022-05-29
浏览次数: 14
星系团是如何形成的？由于我们的宇宙运动太慢而无法观测，因此创建了更快的计算机模拟来帮助找到答案。最近的一个成果是来自IllustrisTNG的TNG50，它是著名的Illustris Simulation的升级版。这段特色视频的第一部分追踪了宇宙气体（主要是氢）从早期宇宙到今天演变成星系和星系团的过程，更亮的颜色标志着更快的气体运动。随着宇宙的成熟，气体落入引力井，星系形成，星系旋转，星系碰撞和合并，而黑洞在星系中心形成，并以高速驱逐周围的气体。视频的后半部分切换到跟踪恒星，显示了一个星系团聚集在一起，完成了潮汐尾和恒星流。TNG50中黑洞的流出物异常复杂，其细节正在与我们真实的宇宙进行比较。研究早期宇宙中气体如何凝聚有助于人类更好地了解我们的地球、太阳和太阳系最初是如何形成的。
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How do clusters of galaxies form? Since our universe moves too slowly to watch, faster-moving computer simulations are created to help find out. A recent effort is TNG50 from IllustrisTNG, an upgrade of the famous Illustris Simulation. The first part of the featured video tracks cosmic gas (mostly hydrogen) as it evolves into galaxies and galaxy clusters from the early universe to today, with brighter colors marking faster moving gas. As the universe matures, gas falls into gravitational wells, galaxies forms, galaxies spin, galaxies collide and merge, all while black holes form in galaxy centers and expel surrounding gas at high speeds. The second half of the video switches to tracking stars, showing a galaxy cluster coming together complete with tidal tails and stellar streams. The outflow from black holes in TNG50 is surprisingly complex and details are being compared with our real universe. Studying how gas coalesced in the early universe helps humanity better understand how our Earth, Sun, and Solar System originally formed.