AI 中文总结
研究银河系中心超大质量黑洞人马座A*周围中等质量黑洞伴星的可探测性，基于射电计时观测，发现脉冲星 - 超大质量黑洞系统对第三体扰动敏感，能严格约束中等质量黑洞存在，补充现有观测约束。
AI 中文摘要
隐藏在银河系中心（GC）的中等质量黑洞（IMBH）可能解释围绕银河系中心超大质量黑洞人马座A*（Sgr A*）的恒星分布的令人困惑的观测结果。未来使用下一代射电望远镜（如SKA）进行的观测有望发现围绕Sgr A*运行的脉冲星，从而提供用脉冲星计时约束隐藏的IMBH的可能性。我们基于射电计时观测研究了脉冲星 - 超大质量黑洞系统中第三体IMBH的可探测性。我们发现脉冲星 - 超大质量黑洞系统对这种第三体扰动非常敏感，可用于对IMBH的存在施加严格约束。即使在复杂的银河系中心天体物理环境引起的强扰动下，计时观测仍将补充现有的观测约束。
英文摘要
An intermediate-mass black hole (IMBH) hidden in our Galactic Center (GC) may explain the puzzling observations of the stellar distribution around Sagittarius A* (Sgr A*), the supermassive black hole (SMBH) in the GC. Future observations with the next-generation radio telescopes, such as the SKA, are promising to discover pulsars orbiting around Sgr A*, and thus provide the possibility of constraining the hidden IMBH with pulsar timing. We study the detectability of a third-body, the IMBH, in the pulsar-SMBH system based on radio timing observation. We find that the pulsar-SMBH system is very sensitive to such a third-body perturbation and can be used to put stringent constraints on the existence of the IMBH. Even under strong perturbations caused by the complex GC astrophysical environments, timing observation will still complement the existing observational constraints.
Comments12 pages, 14 figures
