We present a detailed timing study of the brightest persistent X-ray source Sco X-1 using the data collected by the Hard X-ray Modulation Telescope ($Insight$-HXMT) from July 2017 to August 2018. A complete Z-track hardness-intensity diagram (HID) is obtained. The normal branch oscillations (NBOs) at ∼ 6 Hz in the lower part of the normal branch (NB) and the flare branch oscillations (FBOs) at ∼ 16 Hz in the beginning part of the flaring branch (FB) are found in observations with the Low Energy X-ray Telescope (LE) and the Medium Energy X-ray Telescope (ME) of $Insight$-HXMT, while the horizontal branch oscillations (HBOs) at ∼ 40 Hz and the kilohertz quasi-periodic oscillations (kHz QPOs) at ∼ 800 Hz are found simultaneously above 20 keV for the first time on the horizontal branch (HB) by the High Energy X-ray Telescope (HE) and ME. We find that for all types of the observed QPOs, the centroid frequencies are independent of energy, while the root mean square (rms) increases with energy; the centroid frequencies of both the HBOs and kHz QPOs increase along the Z-track from the top to the bottom of the HB; and the NBOs show soft phase lags increasing with energy. A continuous QPO transition from the FB to NB in ∼ 200 s are also detected. Our results indicate that the non-thermal emission is the origin of all types of QPOs, the innermost region of the accretion disk is non-thermal in nature, and the corona is nonhomogeneous geometrically.

我们使用硬X射线调制望远镜收集的数据，对最亮的持久X射线源Sco X-1进行详细的定时研究（$\mathrm{一世}ñs\mathrm{一世}GHŤ$-HXMT）从2017年7月至2018年8月。获得完整的Z轨硬度强度图（HID）。在观测中发现正常分支（NB）下部为〜6 Hz的正常分支振荡（NBO）和扩口分支（FB）约为16 Hz的火炬分支振荡（FBO）。低能X射线望远镜（LE）和中能X射线望远镜（ME）$\mathrm{一世}ñs\mathrm{一世}GHŤ$-HXMT，而在〜40 Hz处的水平分支振荡（HBO）和在〜800 Hz处的千赫兹准周期振荡（kHz QPO）在〜800 keV时首次同时在水平分支（HB）上被发现。能量X射线望远镜（HE）和ME。我们发现，对于所有类型的观测QPO，质心频率均与能量无关，而均方根（rms）随能量而增加；HBO和kHz QPO的质心频率都沿Z增加-从HB的顶部到底部跟踪；NBO显示出软相位滞后随能量增加。还可以在约200 s内检测到从FB到NB的连续QPO过渡。我们的结果表明，非热辐射是所有类型QPO的起源，吸积盘的最内部区域本质上是非热的，电晕在几何上是不均匀的。