Blazar天体的辐射特性研究  

The Emission Characters of Blazars

作　　者：郑永刚[1] 杨卫国[1] 张皓晶[2] 张雄[1] 

机构地区：[1]云南师范大学物理与电子信息学院,昆明650092 [2]中国科学院国家天文台

出　　处：《天文学报》2007年第4期418-427,共10页Acta Astronomica Sinica

基　　金：国家自然科学基金(10363002;10663002);云南省自然科学基金(2004A0027M)资助项目

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10~7M_☉到10^(10)M_☉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BL Lac天体中心黑洞质量;红外波段和γ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BL Lac(RBL)天体和平谱射电类星体(FSRQs)的辐射是强成束的,但相对论聚柬效应对X射线选BL Lac(XBL)天体的辐射影响较小.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）.

关 键 词：蝎虎天体 普通 物理数据与过程 黑洞物理  星系 基本参数 

分 类 号：P976[天文地球—自然地理学]