Constraining intermediate-mass black holes from the stellar disc of SgrA*

被引：1
作者：
Fouvry, Jean-Baptiste [1 ,2 ]
Bustamante-Rosell, Maria Jose [3 ]
Zimmerman, Aaron [4 ]
机构：
[1] CNRS, 98 bis Blvd Arago, F-75014 Paris, France
[2] Sorbonne Univ, Inst Astrophys Paris, UMR 7095, 98 bis Blvd Arago, F-75014 Paris, France
[3] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
[4] Univ Texas Austin, Weinberg Inst, Austin, TX 78712 USA
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 526卷 / 01期
关键词：
diffusion; gravitation; galaxies: kinematics and dynamics; galaxies: nuclei; VECTOR RESONANT RELAXATION; NEMATIC PHASE-TRANSITIONS; GALACTIC-CENTER; YOUNG STARS; DYNAMICS; ORBITS; ALIGNMENT; REMNANT;
D O I：
10.1093/mnras/stad2783
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Stars evolving around a supermassive black hole see their orbital orientations diffuse efficiently, a process called 'vector resonant relaxation'. In particular, stars within the same disc, i.e. neighbours in orientations, will slowly diffuse away from one another through this stochastic process. We use jointly (i) detailed kinetic predictions for the efficiency of this dilution and (ii) the recent observation of a stellar disc around SgrA*, the supermassive black hole at the centre of the Milky Way, to constrain SgrA*'s unobserved stellar cluster. Notably, we investigate quantitatively the impact of a population of intermediate-mass black holes on the survivability of the stellar disc.
引用
收藏
页码：1471 / 1481
页数：11
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