摘要
ＥＧＲＥＴ空间望远镜已检测到６６颗高置信度的γ射线活动星系核．这些活动星系核都是 射电强的，具有很高的光度，迅速的光学变化，有相当的比例是机超光速源。对γ射线活动 星系核的研究是目前世界上最活跃的前沿课题之一．为了完备ＥＧＲＥＴ活动星系核的射电观 测图像样本，以便进行更可信的统计研究．对一些缺少射电图像观测的ＥＧＲＥＴ活动星系核 进行了多历元的ＶＬＢＩ和ＶＬＡ的观测研究，得到了它们的射电结构图像．
active galactic nuclei (AGNs) with high-confidence level have been detected by EGRET identification. All these AGNs are the radio bright, with the dramatic peak of the luminosity spectra at γ-ray frequencies, rapid optical variability, and the high fraction of superluminal sources. To investigate the relation between the γ-ray emission and the radio structure, we observed a subsample of EGRET sources with VLBI and VLA, which radio images are absent in the literature. These results will be useful for the statistical research.
出处
《天文学进展》
CSCD
北大核心
2001年第2期250-252,共3页
Progress In Astronomy
