Kinematic study of the blazar 0716+714

被引:0
|
作者
Bach, U [1 ]
Krichbaum, TP [1 ]
Ros, E [1 ]
Witzel, A [1 ]
Zensus, JA [1 ]
Britzen, S [1 ]
机构
[1] Max Planck Inst Radioastron, D-53121 Bonn, Germany
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P1 [天文学];
学科分类号
0704 ;
摘要
We determined the kinematics at the jet of 0716+714 from a reanalysis of multi-frequency VLBI data (5, 8.4, 15, 22GHz) obtained during the last 10 years combined with data from the literature. For this intra-day variable blazar, only a lower limit of its distance is known (z >= 0.3). We find that 0716+714 is a relatively fast superluminal source (with a Lorentz factor of gamma > 15), revising earlier results showing much slower motions. We discuss the new findings with emphasis on the interpretation of the observed rapid radio variability.
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页码:446 / 448
页数:3
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