论文标题
用黑洞宿主星系自旋相关性探测大型黑洞的生长
Probing the Growth of Massive Black Holes with Black Hole-Host Galaxy Spin Correlations
论文作者
论文摘要
超级质量黑洞（SMBH）通常在其宿主星系中心发现，但它们的形成仍然是一个悬而未决的问题。鉴于BH质量与宿主星系的凸起分量的速度分散体之间的紧密相关性，已经建立了BH-host Galaxy共同进化方案。然而，这种描述仍然包含许多理论上的不确定性，包括关于在高红移处形成BH种子的困惑以及增长这些种子的生长通道。在这项工作中，我们系统地分析了MBH旋转上不同生长通道的特征。我们表明，可以通过激光干涉仪空间天线检测到的极端质量比率刺激性推断出的MBH旋转的大小来部分区分不同的生长通道。此外，我们建议测量MBH旋转方向与其宿主星系旋转之间的相关性，这对于在低红移星系中发生的极端质量比率的灵感可能是可能的（$ z \ le 0.3 $）。随着旋转方向相关性的包含，不同的形成通道应得到明显更好地约束。
Supermassive black holes (SMBHs) are commonly found at the centers of their host galaxies, but their formation still remains an open question. In light of the tight correlation between the BH mass and the velocity dispersions of the bulge component of the host galaxy, a BH-host galaxy coevolution scenario has been established. Such description however still contains many theoretical uncertainties, including the puzzels about the formation of BH seeds at high redshifts and the growth channel fueling these seeds. In this work, we systematically analyze the signatures of different growth channels on MBH spins. We show that different growth channels can be partially distinguished with the magnitudes of MBH spins infered from extreme-mass-ratio-inspirals detected by the Laser Interferometer Space Antenna. In addition, we propose to measure the correlation between the directions of MBH spins and their host galaxy spins, which is possible for extreme mass-ratio inspirals happening in low-redshift galaxies ($z \le 0.3$). With the inclusion of spin direction correlation different formation channels shall be significantly better constrained.
