Revisiting the Evidence for an Intermediate-mass Black Hole in the Center of NGC 6624 with Simulations

被引：0
|
作者：
Li-Chun Wang [1 ,2 ]
Yi Xie [1 ]
机构：
[1] School of Science, Jimei University
[2] Physics Experiment Center, Jimei University
来源：
Research in Astronomy and Astrophysics | 2022年 / 22卷 / 11期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
P145.8 [塌缩星（黑洞）];
学科分类号：
070401 ;
摘要：
The acceleration of LMXB 4 U 1820-30 derived from its orbital-period derivative ■ was supposed to be the evidence for an Intermediate-mass black hole(IMBH) in the Galactic globular cluster(GC) NGC 6624.However,we find that the anomalous ■ is mainly due to the gravitational wave emission,rather than the acceleration in cluster potential.Using the standard structure models of GCs,we simulate acceleration distributions for pulsars in the central region of the cluster.By fitting the acceleration of J1823-3021 A with the simulated distribution profiles(maximum values),it is suggested that an IMBH with mass ■ may reside in the cluster center.We further show that the second period derivative ■ of J1823-3021 A is probably due to the gravitational perturbation of a nearby star.
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页码：82 / 87
页数：6
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