拓扑星的非径向稳定性
Nonradial stability of topological stars
AI总结:
本文通过线性稳定性分析,数值证明了五维爱因斯坦-麦克斯韦理论中拓扑星在零Kaluza-Klein动量下对非径向扰动是稳定的,为其作为黑洞微态几何候选者提供了支持。
摘要:
拓扑星是由五维爱因斯坦-麦克斯韦理论的维度紧致化产生的正则、无事件视界孤子,它们可以描述天体物理黑洞微态几何的定性性质。它们还提供了一种源自明确定义理论的超致密天体的引人注目的实现,并展现出通常与黑洞仿冒体相关的所有现象学特征,包括(稳定的)光子球、长寿命准正规模式和振铃阶段的回声。通过完成彻底的线性稳定性分析,我们提供了强有力的数值证据,表明这些解在零Kaluza-Klein动量的非径向扰动下是稳定的。
英文摘要:
Topological stars are regular, horizonless solitons arising from dimensional compactification of Einstein-Maxwell theory in five dimensions, which could describe qualitative properties of microstate geometries for astrophysical black holes. They also provide a compelling realization of ultracompact objects arising from a well-defined theory and display all the phenomenological features typically associated with black hole mimickers, including a (stable) photon sphere, long-lived quasinormal modes, and echoes in the ringdown. By completing a thorough linear stability analysis, we provide strong numerical evidence that these solutions are stable against nonradial perturbations with zero Kaluza-Klein momentum.
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