RBLs与XBLs的多波段流量及中心黑洞质量的研究

Study of the multi-waveband flux and the black hole mass of RBLs and XBLs

BL Lacs天体的辐射谱变化、多波段的相关性及偏振的特性为研究各辐射分量的内禀相互关联提供重要的信息.本文用收集了RBLs和XBLs的红移、中心黑洞质量,统计得到RBLs天体的红移大于XBLs天体,RBLs天体的平均中心黑洞质量小于XBLs天体的平均中心黑洞质量.本文还收集了低态时射电波段、红外波段、光学波段及X射线波段的辐射流量,并分析了它们之间的相关性,及其与红移的相关性.本文的结果支持了RBLs和XBLs可作为BLLac天体的有效分类标准的观点,并且表明它们的物理性质可能存在差异,而非选择效应的结果.

The spectral variation,the correlation of multi-waveband flux and the property of polarization of BL Lac objects give us important information for studying their intrinsic correlation of radiation components. The present paper analyzes the properties of RBLs and XBLs. It is indicated by statistics that the redshift of RBLs are greater than that of XBLs and the black hole mass of RBLs are smaller than that of XBLs. The paper also studies the possible correlations between the redshift and the flux densities for different wavebands in low state,and the possible correlations of flux densities for different wavebands （ radio,near-infrared,optical and X-ray） in low state. The results support that the systematic difference between RBLs and XBLs is not caused by the choice effect only.