AI 中文总结
利用凌日系外行星勘测卫星，通过多种分析技术在耀变体PKS 0735+178光学光变曲线中检测到准周期振荡特征及短耀斑，对光变曲线进行统计检查并探讨了流量行为的解释机制。
AI 中文摘要
我们报告了在耀变体PKS 0735+178的光学光变曲线中检测到准周期振荡（QPO）特征和一次短耀斑。观测使用凌日系外行星勘测卫星，在71和72两个扇区进行，跨度约49天。71扇区的适度耀斑持续约4.3天，由两个子耀斑组成。在72扇区检测到一个周期约11.2小时的瞬态QPO，局部和全局显著性水平分别为4.11σ和3.06σ。我们用加权小波z变换、 Lomb-Scargle周期图和相位色散最小化分析技术寻找并确认QPO特征，还对光变曲线进行逐段统计检查并讨论了解释观测流量行为的可能机制。
英文摘要
We report here the detection of signatures of a quasiperiodic oscillation (QPO) and a short flare in the optical light curve of the blazar PKS 0735+178, observed in two sectors, 71 and 72, spanning around 49 days with the Transiting Exoplanet Survey Satellite. The modest flare in sector 71 lasted ~4.3 days and appears as a combination of two sub-flares. In sector 72, a transient QPO with a period ~11.2 hours is detected at local and global significance levels of 4.11$σ$ and 3.06$σ$, respectively. We used weighted wavelet z transform, Lomb-Scargle periodogram, and phase dispersion minimization analysis techniques to look for and confirm the QPO feature. We also performed a segment-wise statistical inspection of these light curves and discuss here possible mechanisms that could explain the observed flux behavior.
CommentsAccepted for publication in MNRAS, 10 pages, 7 figures, 1 table
