the support from National Natural Science Foundation of China (NSFC,Nos.U1831124 and 11273008);the Natural Science Foundation of Anhui Province of China (Grant No.1908085MA28)。
Long-term optical,X-ray and γ-ray data of blazar 3 C 279 have been compiled from Swift-XRT,RXTE-PCA,Fermi-LAT,SMARTS and literature.The source exhibits strong variability on long timescales.From the 1980 s until now,...
supported by the National Natural Science Foundation of China (Grant No. 11273008);partly by the Foundation for Young Talents in College of Anhui Province (Grant No. 2012SQRL116)
The long-term optical and infrared color variability of blazars has been investigated with monitoring data from the Small and Moderate Aperture Research Telescope System(SMARTS). The sample in this study consists of...