摘要
在视超光速源3C345(类星体)中,有5个VLBI节点被观测到有视超光速运动,特别是其中靠近核心的两个节点C_4和C_5沿着不同的弯曲轨道运动.本文考虑这种双轨道运动是由于射电核心运动造成的可能性.利用现有资料,把观测到的C_4和C_5的运动,分解成射电核心的运动和它们沿着一条共同的轨道运动.结果表明,这种分解可以很好地拟合现有关于节点C_4和C_5的观测结果.对进一步的观测检验和模型的物理涵义作了扼要的讨论。
In superluminal radio source 3C345 there are five VLBI knots which have apparent Kuperluminal motions. Especially, the inner knots closer to the core C4 and C5 are moving along different curved paths. In this paper we discuss the possibility that this phenomenon may be caused by the motion of the core itself. The motions of C4 and C5 are resolved into the core motion and their motions along a common path. The observed paths can well be fitted by this resolution. The results are shown in Figs. 1-3. The test of this model is discussed.
关键词
类星体
河外射电源
视超光速运动
Quasars-extragalactic radio source-apparenl supcrluminal motion
