NGC\，4472中大质量黑洞双星的天体测量约束
Astrometric Constraints on a Massive Black Hole Binary in NGC\,4472
摘要：
在对Jy级目标的EHT研究中，Safarzadeh等人（2019）展示了天体测量监测如何限制大质量黑洞双星，使它们具有广泛的分离，使它们能够长时间抵抗引力波损失，并且预计合并的卫星星系具有较小的质量比。通过这项ngVLA研究，我们展示了如何为更多的mJy级目标（如NGC1，4472）探索这些前沿主题。我们还讨论了ngVLA天体测量监测如何测试脉冲星定时阵列对NGC1，4472的引力波的上限。
英文摘要：
In an EHT study of a Jy-level target, Safarzadeh et al. (2019) show how astrometric monitoring could constrain massive black hole binaries with the wide separations that make them long-lived against gravitational wave losses, and with the small mass ratios expected from merged satellite galaxies. With this ngVLA study, we show how such frontier topics could be explored for the more numerous mJy-level targets, such as NGC\,4472. We also discuss how ngVLA astrometric monitoring could test the upper limits from pulsar timing arrays on gravitational waves from NGC\,4472.
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