摘要
应用包括欧洲VLBI网和美国的Haystack在内的VLBI阵，我们于历元1989．75在频率5GHz对类星体3C286进行了观测．在分辨率高达1毫角秒（mas）的图像上，该源的“核”首次被分解为相距大约5．8mas的两个分离部分：喷流向西南方向延伸并呈正弦状的摆动形态．图像在所能达到的动态范围上没有出现反向喷流．由于在（U，V）平面的覆盖中存在有较大的空穴，所以“核”的两个分离部分内都在不同程度上出现一些不真实部分．该次实验的结果为高动态范围的观测提供了一定的依据．
QSO 3C286 was observed at frequency 5 GHz with the EVN+Haystack VLBI array.This paper presents its results. It is the first time that the' core of 3C286 is reso1ved into twoparts. Their separation is about 5. 8 mas. Its jet has sinuous feature and extends to the direction of the s0uthwest. There is no counter-jet appeared on our maps. The large vacancy onthe (u.v) coverage causes some false features appeared at each part of the' core' of 3C286.
出处
《中国科学院上海天文台年刊》
1995年第16期131-136,共6页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
基金
国家自然科学基金
