GW200115：黑洞与中子星合并的模拟
(原标题: GW200115: Simulation of a Black Hole Merging with a Neutron Star)
2021-07-14
浏览次数: 33
当黑洞摧毁中子星时会发生什么？分析表明，正是这样的事件产生了引力波事件GW200115，该事件于2020年1月被LIGO和处女座天文台探测到。为了更好地理解这一不寻常的事件，这一特色的可视化是通过计算机模拟创建的。可视化视频开始于黑洞（大约6倍太阳质量）和中子星（大约1.5倍太阳质量）相互环绕，一起释放出越来越多的引力辐射。引力波发射的独特模式用蓝色表示。这对双星的旋转速度越来越快，直到中子星完全被黑洞吸收。由于中子星在碰撞过程中没有分裂，所以很少有光逃逸——这与观测到的光学对立物的缺乏相匹配。剩下的黑洞会发出短暂的光环，随着光环的消失，发出的引力波也会消失。这段30秒的延时视频可能看起来很短，但实际上它比真正的合并事件持续的时间长1000倍。天体物理学家：在天体物理学源代码库中浏览2500多个代码
查看原文解释
What happens when a black hole destroys a neutron star? Analyses indicate that just such an event created gravitational wave event GW200115, detected in 2020 January by LIGO and Virgo observatories. To better understand the unusual event, the featured visualization was created from a computer simulation. The visualization video starts with the black hole (about 6 times the Sun's mass) and neutron star (about 1.5 times the Sun's mass) circling each other, together emitting an increasing amount of gravitational radiation. The picturesque pattern of gravitational wave emission is shown in blue. The duo spiral together increasingly fast until the neutron star becomes completely absorbed by the black hole. Since the neutron star did not break apart during the collision, little light escaped -- which matches the lack of an observed optical counterpart. The remaining black hole rings briefly, and as that dies down so do the emitted gravitational waves. The 30-second time-lapse video may seem short, but it actually lasts about 1000 times longer than the real merger event. Astrophysicists: Browse 2,500+ codes in the Astrophysics Source Code Library