中文摘要：

收集了47个Blazar天体的短时标光变资料，估算了中心天体质量和不同波段辐射区域，并对估算结果作了统计分析，发现Blazar天体中心黑洞质量在10^7 M⊙到10^10M⊙之间，BL Lac天体与平谱射电类星体中心黑洞质量有很大差异，平谱射电类星体中心黑洞质量大于BLLac天体中心黑洞质量；红外波段和1射线波段辐射区域大小相似．同时，利用收集到Blazar天体的热光度分析了Blazar天体热光度与短时标光变之间的关系，证实了射电选BLLac（RBL）天体和平谱射电类星体（FSRQs）的辐射是强成束的，但相对论聚束效应对X射线选BL Lac（XBL）天体的辐射影响较小．

英文摘要：

The paper collected short timescale variability of 47 Blazars from the available literature, and calculated the mass of the central black hole and the sizes of different band emission region of Blazars. Based on our results of statistical analysis, we conclude that the mass of the flat spectral radio quasi-stellar object is larger than the mass of the BL Lac object, the v-ray and infrared emission regions are co-spatial. Furthermore, the paper also analyzes the relation between minimum timescale of variability and the bolometric luminosity of Blazar＇s, it is concluded that the emission from the radio selected BL Lac object（RBL） and the flat spectral radio quasi-stellar object（FSRQs） are strongly beamed, but the relativistic beaming effect does not significantly affect the emission from the X-ray selected BL Lac object（XBL）.