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arXiv 2601.02468gr-qcastro-ph.HEhep-thphysics.class-ph
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双极端质量比 inspirals 中的共振

Resonances in binary extreme mass ratio inspirals

CENTRA, Departamento de Física, Instituto Superior Técnico – IST, Universidade de Lisboa – UL(里斯本大学高级理工学院物理系中央天体物理与空间技术研究中心);Center of Gravity, Niels Bohr Institute(尼尔斯·玻尔研究所引力中心);Department of Physics & Astronomy, Vanderbilt University(范德堡大学物理与天文学系);OpenAI;CAMGSD, Departamento de Matemática, Instituto Superior Técnico – IST, Universidade de Lisboa – UL(里斯本大学高级理工学院数学系计算与应用数学中心);Max Planck Institute for Gravitational Physics (Albert Einstein Institute)(马克斯·普朗克引力物理学研究所(阿尔伯特·爱因斯坦研究所))

João S. Santos, Vitor Cardoso, Alexandru Lupsasca, José Natário, Maarten van de Meent

AI总结:

研究双极端质量比 inspirals 中的共振现象,揭示了双星与超大质量黑洞相互作用时能量辐射的复杂机制。

摘要:

恒星质量双星在超大质量黑洞(SMBH)附近演化可能在宇宙中很常见,无论是活跃星系核还是其他天体物理环境。本文详细研究了由附近恒星质量双星驱动的SMBH模式的共振激发。由此产生的共振能量流随双星的轨道位置和频率变化,表现出丰富的复杂结构。特别是,我们发现辐射到无限远的总能量流在引力波频率接近但不等于相应特征正常模式频率时达到最大值。此外,当双星远离SMBH时,这种与模式频率的偏移变得更加明显。此外,对于合适的取向,双星可以有效地“喂养”SMBH的光环,选择性地激发特定的振荡模式。对于旋转(Kerr)黑洞,模式谱显著更加复杂;然而,单个模式的阻尼也更弱,导致共振响应增强但更难解释。

英文摘要:

Stellar-mass binaries evolving in the vicinity of supermassive black holes (SMBHs) may be common in the universe, either in active galactic nuclei or in other astrophysical environments. Here, we study in detail the resonant excitation of SMBH modes driven by a nearby stellar-mass binary. The resulting resonant energy fluxes vary with the orbital location and frequency of the binary, exhibiting a rich and complex structure. In particular, we find that the total energy flux radiated to infinity is maximized at a gravitational-wave frequency that is close to, but not exactly equal to, the real part of the corresponding quasinormal-mode frequency. Moreover, as the binary is moved farther away from the SMBH, this offset from the mode frequency becomes increasingly pronounced. In addition, for suitable orientations, the binary can effectively ``feed'' the light ring of the SMBH, selectively exciting particular oscillation modes. For rotating (Kerr) black holes, the mode spectrum is significantly more intricate; however, individual modes are also less strongly damped, leading to an enhanced -- but more difficult to interpret -- resonant response.

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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