We present the results of multiband observations of the blazar S5 0716+714 intra-night variability performed during 23 nights in the period from 04.2014 through 04.2015. The bluer-when-brighter trend is detected in both intra- and inter-night data. We assume that the jet component crossing the region where the medium becomes transparent to the optical radiation forms almost all optical emission of S5 0716+714. Deviations of some parts of the component from the general trajectory of the component can cause the Doppler factor of these parts to increase. Various maximum Doppler factors achieved by these parts of the component and different volumes occupied by them with the concave synchrotron self-absorption spectrum result in both the observed various color index behavior in variability and explain the absence of dependence of the bluer-when-brighter behavior on the object magnitude. We estimated spectral maximum frequency ${\nu }_{\text{m}}\approx (0.6-1.7)·{10}^{14}$ GHz from intra- and inter-night data. Assuming that the size of emitting region is comparable with the gravitational radius of a black hole with a mass of $5·{10}^8$ solar masses, the magnetic field obtained from synchrotron self-absorption is $B\sim {10}^2-{10}^4$ G, which corresponds to the values of other independent estimations. The obtained values of ${\nu }_{\text{m}}$ and $B$ confirm our assumption about the nature of the blazar S5 0716+714 region radiating in the optical range.

我们提供了从2014年4月4日至2015年4月的23个晚上进行的blazar S5 0716 + 714夜内变异性的多波段观测结果。在夜间和夜间数据中都检测到了变蓝变亮的趋势。我们假设穿过介质变得对光辐射透明的区域的射流分量形成了S5 0716 + 714的几乎所有光发射。零部件某些部分与零部件总轨迹的偏离会导致这些零部件的多普勒系数增加。组件的这些部分所获得的各种最大多普勒因子以及凹面同步加速器自吸收光谱所占据的不同体积会导致观察到的各种颜色指数行为具有可变性，并解释了不存在较蓝变时变的行为的依赖性。在物体的大小上。我们估算了频谱的最大频率${\nu }_{\text{米}}\approx （0.6-1.7）·{10}^{14}$ 夜间和夜间数据的GHz。假设发射区域的大小与质量为的黑洞的重力半径相当$5·{10}^8$ 太阳质量，从同步加速器自吸收获得的磁场是 $乙〜{10}^{\mathrm{2个}}-{10}^4$ G，它对应于其他独立估计的值。获得的值${\nu }_{\text{米}}$ 和 $乙$ 确认我们对blazar S5 0716 + 714区域在光学范围内辐射的性质的假设。