Thermal and non‐thermal radio variations in WR 147
Thermal and non‐thermal radio variations in WR 147
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WR 147 中的热射电和非热射电变化
DOI：
10.1046/j.1365-8711.2002.05553.x
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发表时间：
2002
影响因子：
4.8
通讯作者：
M. Bode
中科院分区：
文献类型：
--
作者：
S. Watson;R. Davis;P. Williams;M. Bode
我们给出了用多元无线电干涉仪网络(MERLIN)观测的对撞风系统WR147的新的高分辨率(70-ma)射电图像，这些图像显示出WN8恒星热发射组件(WR147S)和非热风碰撞源(WR147N)结构上的显著差异。WR 147N的大小和形状在第一个和最后一个历元之间变化，发射材料的位置也是如此。WR147S和WR147N之间的低强度发射的存在在一个5 GHz的纪元内得到了证实，这与我们和Contrera&Rodriguez所看到的微弱发射斑点的南移一起，表明了一个南北优先的流出轴。
We present new, high-resolution (70-mas) radio images of the colliding wind system WR 147 observed with Multi-element Radio-linked Interferometer Network (MERLIN), which show significant differences in the structures of both the thermally emitting WN8 stellar component (WR 147S) and the non-thermal wind-collision source (WR 147N). The size and shape of WR 147N change between the first and last epochs, as does the position of the emitting material. The presence of low-intensity emission between WR 147S and WR 147N is confirmed in one 5-GHz epoch, and this, together with the southerly movement of faint emission blobs seen by ourselves and Contreras & Rodriguez, suggests a north-south preferential outflow axis.