论文标题
通过使用一般相对论方法，估计一组Megamaser AGN黑洞的质量距离比
Estimating the mass-to-distance ratio for a set of megamaser AGN black holes by employing a general relativistic method
论文作者
论文摘要
语境。在确定黑洞（BH）参数方面的最新一般相对论方法的最新成就中，我们继续估计在主动银河核（Active）核心（AGNS）核心的超质量BHS的质量与距离之比。我们的目的是通过使用完整的一般相对论方法来研究所选AGN中心的超大BHS的性质，该方法使我们能够解决此类天体物理系统中对相对论效应的潜在检测。方法。为了使用公开可用的观察数据进行统计估计，我们使用了一个一般的相对论模型，该模型描述了BH旋转曲线并进一步采用了贝叶斯拟合方法。结果。我们估计了上述BHS的质量与距离之比，其位置以及宇宙奇特运动和宇宙学扩展产生的宿主星系的衰退红移。最后，我们为每个AGN计算了最接近BH的Maser的重力红移。这种重力红移是由正确包含在建模中的BH的重力场产生的一般相对论效应。
Context. Motivated by the recent achievements of a full general relativistic method in determining black hole (BH) parameters, we continue to estimate the mass-to-distance ratio of the supermassive BHs hosted at the core of the active galactic nuclei (AGNs) of the megamaser galaxies NGC 1320, NGC 1194, NGC 5495, and Mrk 1029. Aims. Our aim is to study the properties of super massive BHs at the centers of the selected AGNs by using a full general relativistic method that allows us to address the potential detection of relativistic effects within such astrophysical systems. Methods. In order to perform statistical estimations with publicly available observational data, we used a general relativistic model that describes BH rotation curves and further employed a Bayesian fitting method. Results. We estimated the mass-to-distance ratio of the aforementioned BHs, their position and the recessional redshifts of the host galaxies produced by both peculiar motion and cosmological expansion of the Universe. Finally, we calculated the gravitational redshift of the closest maser to the BH for each AGN. This gravitational redshift is a general relativistic effect produced by the gravitational field of the BH properly included in the modelling.
