X射线选射电噪活动星系核的多波段性质(英文)  

MULTIWAVELENGTH PROPERTIES OF THE X-RAY SELECTED RADIO-LOUD AGNs

作　　者：袁启荣[1] 吴江华[2,3] 黄克谅[1] 

机构地区：[1]南京师范大学物理系 [2]中国科学院北京天文台北京100012 [3]中国科学院国家天文观测中心

出　　处：《天文学报》2000年第4期400-409,共10页Acta Astronomica Sinica

基　　金：国家自然科学基金项目!( 1 9873 0 0 7;1 9873 0 1 8);江苏省教委自然科学基金重点项目!( 1 1 1 0 80B1 86)

摘　　要：基于被ROSAT全天区巡天观测和射电 4.85GHz巡天观测同时探测到的活动星系核的大样本 ,研究了X射线选的射电噪活动星系核的多波段性质 .通过分析该样本中的活动星系核的宽波段能量分布 ,确认了来自射电、光学和X射线波段的辐射光度之间的显著相关性 .这种相关性对于类星体、赛弗特、蝎虎座天体和射电星系是有区别的 .同时 ,探讨了从光学到X射线波段之间的谱指数与红移以及 50 0 0 和 4.This paper presents a study on the multiwavelength properties of the X ray selected radio loud Active Galactic Nuclei (AGNs), based on a large sample of AGNs detected both by the ROSAT All Sky Survey and the radio surveys at 4.85GHz frequency. The broad band energy distribution of the AGNs in the authors' sample is shown. They confirm the presence of strong correlations between the luminosities emitted from the radio, optical, and X ray bands which differ for quasars, Seyferts, BL Lacs, and radio galaxies. The correlations of the spectral index between the optical and X ray bands, with the redshift and monochromatic luminosities at 5500? and 4.85GHz, are also investigated.

关 键 词：活动星系核 射电星系 多波段性质 X射线 

分 类 号：P157.7[天文地球—天文学]