Aligning Retrograde Nuclear Cluster Orbits with an Active Galactic Nucleus Accretion Disc
Aligning Retrograde Nuclear Cluster Orbits with an Active Galactic Nucleus Accretion Disc
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DOI：
10.1093/mnras/stad1295
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发表时间：
2022-07
影响因子：
4.8
通讯作者：
S. S. Nasim-S.;Gaia Fabj;Freddy Caban;Amy Secunda;K. Ford;B. McKernan;J. Bellovary;N. Leigh;W. Lyra
中科院分区：
文献类型：
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作者：
S. S. Nasim-S.;Gaia Fabj;Freddy Caban;Amy Secunda;K. Ford;B. McKernan;J. Bellovary;N. Leigh;W. Lyra
围绕超大质量黑洞（SMBH）运行的恒星和恒星残骸可以与活动星系核（AGN）盘相互作用。随着时间的推移，逆行轨道（倾角i iret sBH）向嵌入式逆行轨道（i → 180○）衰减。sBH靠近极轨道（i <$90 ○）和几乎嵌入逆行轨道（i <$180 ○）的恒星显示a的最大减小。一颗星星是否在活动星系核的寿命内被盘捕获，主要取决于盘的密度，其次取决于恒星的类型和初始a。对于sBH，极轨道、低质量sBH和低密度盘的盘捕获时间最长。大质量的sBH通常会在活动星系核盘中停留更多的时间，这对嵌入的sBH自旋分布有影响。
Stars and stellar remnants orbiting a supermassive black hole (SMBH) can interact with an active galactic nucleus (AGN) disc. Over time, prograde orbiters (inclination i iret sBH decay towards embedded retrograde orbits (i → 180○). sBH near polar orbits (i ∼ 90○) and stars on nearly embedded retrograde orbits (i ∼ 180○) show the greatest decreases in a. Whether a star is captured by the disc within an AGN lifetime depends primarily on disc density, and secondarily on stellar type and initial a. For sBH, disc capture-time is longest for polar orbits, low mass sBH and lower density discs. Larger mass sBH should typically spend more time in AGN discs, with implications for the embedded sBH spin distribution.