AI 中文总结
该研究提出黑洞被类时反射腔线性扰动的场景，结合arXiv:2606.11297建立热乘积公式与高阶准正则泛音渐近表达式，提出吸积等离子体作为透射镜的观测方案，或可从无线电波提取原初黑洞内部信息。
AI 中文摘要
我们考虑黑洞被类时反射腔包围并受线性扰动的场景。对于引力、电磁及其他扰动产生的准正则谱，结合arXiv:2606.11297，我们建立了热乘积公式，并推导了高阶准正则泛音的普适渐近表达式。这两个结果在渐近平直时空、德西特时空及反德西特时空均成立（此前已知）。该谱特征直接编码黑洞内部及其奇点的信息，原则上至少可被事件视界外的观测者获取。我们提出具体观测装置，其中吸积等离子体充当部分透射镜。对于小型假设原初黑洞，我们认为可从无线电波谱的电磁波中提取黑洞内部的具体信息。
英文摘要
We consider a scenario in which a black hole is enclosed in a reflecting timelike cavity and linearly perturbed. For the resulting quasinormal spectra of gravitational, electromagnetic, and other perturbations, in conjunction with our arXiv:2606.11297, we establish a thermal product formula and derive a universal asymptotic expression for high quasinormal overtones. Both results hold in asymptotically flat, de Sitter, and Anti-de Sitter spacetimes (known previously). This spectral signature directly encodes information about the black hole interior and its singularity, and is, at least in principle, accessible to an observer outside the event horizon. We then propose a concrete observational setup in which accreting plasma plays the role of a partially transmissive mirror. For small, hypothetical, primordial black holes, we argue that one may thereby be able to extract concrete information about the black hole interior from electromagnetic waves in the radiowave spectrum.
Comments8 pages, 4 figures
