引力波信号中波形系统误差与引力透镜信号特征的相互作用
On the interplay between waveform systematics and lensing signatures in gravitational-wave signals
- University of Louvain（鲁汶大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
该研究以引力波事件GW231123为对象，通过数值相对论注入数据探讨波形系统误差与引力透镜信号特征的相互作用，发现引力透镜自由度可减小波形差异但并非所有情况均成立，未找到所有模型均支持引力透镜且减小波形差异的案例。
AI中文摘要：
特殊引力波事件GW231123具有异常高的总质量和近极端自旋，同时其推断的源属性表现出强烈的波形依赖变化。多项后续研究倾向于引力透镜解释，认为波形系统误差有所减小，这引发了一个问题：明显的引力透镜证据是否可能源于波形建模系统误差。我们使用类似GW231123的数值相对论注入数据开展研究，发现引力透镜自由度可减小波形差异并产生不可忽略的引力透镜支持度，但该行为在不同注入数据中并非一致，且未发现所有波形模型和透镜模型均支持引力透镜且同时减小波形差异的情况。
英文摘要：
The exceptional gravitational-wave event GW231123 exhibited unusually high total mass and near-extremal spins, while revealing strong waveform-dependent variations in its inferred source properties. Several follow-up studies favored a lensed interpretation, with reduced waveform systematics, raising the question of whether apparent lensing evidence could arise from waveform modeling systematics. Using GW231123-like numerical-relativity injections, we find that lensing degrees of freedom can reduce waveform discrepancies and yield non-negligible lensing support. However, this behavior is not systematic across injections, and cases where all waveform and lens models favor lensing while reducing waveform discrepancies are not found.
