论文标题
基于其附近恒星轨道的Sgra $^*$旋转的上限
An upper limit on the spin of SgrA$^*$ based on stellar orbits in its vicinity
论文作者
论文摘要
到目前为止，在银河系中心Sgra $^*$的巨大黑洞（BH）的旋转受到了限制。我们根据S-Star的空间分布对Sgra $^*$的自旋置于上限，这些空间分布在两个几乎边缘的磁盘上排列在一个位置角度，大约$ \ pm PM 45^\ circ $相对于银河平面，在银河系中心周围的Milliparsec尺度上。要求将框架拖动的进动没有足够的时间使S-Star轨道角动量进攻，因此大量BH在银河系中心的旋转可以限制为$χ\ \ \ \ lyssim 0.1 $。
The spin of the massive black hole (BH) at the center of the Milky Way, SgrA$^*$, has been poorly constrained so far. We place an upper limit on the spin of SgrA$^*$ based on the spatial distribution of the S-stars, which are arranged in two almost edge-on disks that are located at a position angle approximately $\pm 45^\circ$ with respect to the Galactic plane, on a milliparsec scale around the Galactic Center. Requiring that the frame-dragging precession has not had enough time to make the S-star orbital angular momentum precess, the spin of the massive BH at the center of the Milky Way can be constrained to $χ\lesssim 0.1$.
