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arXiv 2104.05084astro-ph.HEastro-ph.GAgr-qc
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基于巨脉泽团Lense-Thirring进动缺失的黑洞自旋约束

Constraining Black Hole Spin based on the Absence of Lense-Thirring Precession of Megamaser Clumps

Santiago Giner, Abraham Loeb

摘要:

利用黑洞周围最内层巨脉泽团不存在Lense-Thirring进动的情况,对位于巨脉泽星系中心的7个黑洞(NGC 4258,NGC 2273,UGC 3789,NGC 3393,NGC 5495,NGC 5765 b和UGC 6093)的自旋振幅进行了上限计算.通过要求相关的岁差时间尺度长于超脉泽团块的年龄,以保持超脉泽的单平面几何形状,来导出约束。

英文摘要:

We make use of the absence of Lense-Thirring precession of the innermost megamaser clumps around black holes in order to place upper limits on the spin amplitude of seven black holes at the center of megamaser galaxies: NGC 4258, NGC 2273, UGC 3789, NGC 3393, NGC 5495, NGC 5765b, and UGC 6093. The constraints are derived by requiring that the associated precession time-scale be longer than the age of the megamaser clumps, in order to preserve the single-plane geometry of the megamasers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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