AI 中文总结
本研究通过多阶段计时分析对41个TeV选 blazar的伽马射线QPO候选体进行可信度评估，未发现稳健检测结果，明确了红噪声处理对缩减候选体集合的作用。
AI 中文摘要
我们对41个TeV blazar的0.1-100 GeV Fermi-LAT光变曲线中的准周期振荡（QPO）候选体进行分析，采用保守的多阶段计时分析，结合FFT功率谱、红噪声蒙特卡洛模拟、错误发现率控制、自举周期不确定度、分样本交叉验证、Lomb-Scargle和WWZ诊断、仅检测灵敏度测试、观测窗口检查以及注入-恢复实验。首轮FFT搜索在原始95%水平以上标记出16个源，经数据质量和分样本过滤后得到6个强候选体，但均未满足完全自动化的多方法层级要求。通过保留观测采样和非高斯流量分布的正向模拟量化源级显著性，将红噪声斜率作为冗余参数，且不假设周期图功率的独立性。在模拟选定的参考斜率下，41个源中仅2个达到原始源级p<0.05，仅J1555.7+1111达到Benjamini-Hochberg显著性，且均未通过Benjamini-Yekutieli校正；无任何源通过保守斜率包络筛选。即使首轮搜索标记为显著但未列入强候选体的J1555.7+1111，在最不利斜率（全样本搜索后约0.31）下的全局p值升至7.5×10^-3，并非稳健检测。鉴于存在较大周期不确定度、观测窗口较弱及注入-恢复灵敏度有限，我们未确立任何稳健的伽马射线QPO检测：符合采样特性的红噪声处理大幅缩减了候选体集合，为QPO可信度提供了明确评估。
英文摘要
We analyze quasi-periodic oscillation (QPO) candidates in the 0.1-100 GeV Fermi-LAT light curves of 41 TeV blazars with a conservative, multi-stage timing analysis combining FFT power spectra, red-noise Monte Carlo simulations, false-discovery-rate control, bootstrap period uncertainties, split-sample cross-validation, Lomb-Scargle and WWZ diagnostics, a detection-only sensitivity test, observingwindow checks, and injection-recovery experiments. A first-pass FFT search flags 16 sources above a raw 95% level and six strong candidates after data-quality and split-sample filtering, none satisfying a fully automated multi-method tier. Source-level significance is quantified with forward simulations that preserve the observed sampling and non-Gaussian flux distribution, treating the red-noise slope as a nuisance parameter and never assuming independence of periodogram powers. At simulation-selected reference slopes, only two of the 41 sources reach a raw source-level p < 0.05,only J1555.7+1111 reaches Benjamini-Hochberg significance, and none survives Benjamini-Yekutieli correction. No source survives the conservative slope envelope. Even J1555.7+1111, which the first-pass search flagged as significant but did not rank among its strong candidates, has a global p-value that rises to 7.5*10^-3 under the least favorable slope (~ 0.31 after the full-sample search), so it is not a robust detection. With substantial period uncertainties, a weak observing window, and limited injection-recovery sensitivity, we establish no robust gamma-ray QPO detection: a sampling-faithful red-noise treatment substantially contracts the candidate set, providing an explicit assessment of QPO credibility.
Comments21 pages, 9 figures, 7 tables. Accepted for publication in The Astrophysical Journal (ApJ)
