论文标题
M87黑洞的旋转
Spin of the M87 black hole
论文作者
论文摘要
事件地平线望远镜图像中M87中65亿太阳质量黑洞的自旋测量是跨越值范围范围很大的系列中的一种，但倾向于在增生流和黑洞之间共享共旋转的特征。黑洞的自旋范式预测了非常高的黑洞自旋，在该框架中，这是在其最后一次重要合并中产生的。但是，高黑洞的旋转似乎在间隙范式中排除在外，这预测了早期形成，质量已经超过40亿个太阳能。在这张照片中，黑洞偏离了原始无线电类的阶段，而且数十亿年，不仅没有使其质量增加一倍，而且还没有重新获得原始的高旋转，因此它与联合旋转的积聚黑洞兼容，其尺寸无尺寸的旋转在0.2 <a <0.5 <a <0.5。
Spin measurement of the 6.5 billion solar mass black hole in M87 from the Event Horizon Telescope image is the latest in a series that span a wide range in values, but that tend to share the feature of co-rotation between the accretion flow and black hole. The spin paradigm for black holes predicts very high black hole spin which in that framework was produced in its last significant merger. High black hole spin appears to be ruled out in the gap paradigm, however, which predicts early formation with a mass already in excess of 4 billion solar masses. In this picture, the black hole experienced slow evolution as it departed from its original radio quasar phase and over billions of years not only failed to double its mass but also fell short of regaining its original high spin, such that it is now compatible with a co-rotating accreting black hole whose dimensionless spin fits best in the range 0.2 < a < 0.5.
