VRIJHK photometry of 3C 279

We searched for quasi-periodicities on year-like timescales in the light curves of six blazars in the optical--near-infrared bands and we made a comparison with the high energy...我们针对6颗耀变体（blazar）在光学-近红外波段的光变曲线，开展了类年时间尺度上的准周期性（quasi-periodicities）搜寻，并将分析结果与高能……进行了对比。