中文摘要：

利用多波段同时性观测数据,研究了Blazar天体的近红外波段偏振与光学波段偏振的关系,发现两个波段的偏振度和偏振角之间都存在着很强的线性相关性.另外,两个波段的辐射流量也强烈相关.结果表明Blazal天体的近红外辐射主要来自于相对论电子的同步辐射,且与光学波段辐射来自于同一辐射区域.另外,利用2MASS数据还研究了近红外波段3个色指数J-H、H-K和J-K之间的相关性,发现J-H和H-K都与J-K强相关,但J-H与H-K之间没有相关性.最后研究了色指数-星等关系,表明在近红外波段Blazar天体变亮时谱形变平。

英文摘要：

The correlation of the polarization in near-infrared and optical bands is studied by using the simultaneous observational data. It is found that the polarization degree, polarization angle and flux intensity of the near-infrared band are strongly correlated with those of the optical band. Therefore it is concluded that the near-infrared emission and polarization of blazars are mainly from synchrotron radiation. Finally, the correlations between J-H, H-K and J-K and the correlation between the near-infrared color indices and the magnitudes arw also studied.