LS 5039的天体测量/形态变化和诞生地
The astrometric/morphological variability and the birth place of LS 5039
摘要：
LS 5039是VHE发现的少数X射线双星之一，可能包含一颗年轻的非吸积脉冲星。加速粒子流出的同步辐射可以直接映射与高分辨率的射电观测。射电辐射的形态在很大程度上取决于致密天体的性质和双星系统的轨道参数。我们提出了VLBA观测LS 5039覆盖一个轨道周期，这表明在质量尺度的形态和天体测量的变化。另一方面，我们讨论了LS 5039与超新星遗迹SNR G016.8-01.1的可能关联。
英文摘要：
LS 5039 is one of the few X-ray binaries detected at VHE, and potentially contains a young non-accreting pulsar. The outflow of accelerated particles emitting synchrotron emission can be directly mapped with high resolution radio observations. The morphology of the radio emission strongly depends on the properties of the compact object and on the orbital parameters of the binary system. We present VLBA observations of LS 5039 covering an orbital cycle, which show morphological and astrometric variability at mas scales. On the other hand, we discuss the possible association of LS 5039 with the supernova remnant SNR G016.8-01.1.
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