耀变体AO 0235+164的极端光偏振行为
Extreme photo-polarimetric behaviour of the blazar AO 0235+164
摘要：
我们目前的光学偏振观测的耀变体AO 0235+164的高时间分辨率。我们的数据，第一次测试这个对象在很短的时间尺度的光偏振行为，显示显着的微变总通量，颜色指数，线性偏振度，和位置角。强夜间变化也检测到这些参数。虽然没有发现颜色指数和总流量之间的相关性，我们的数据似乎支持一般的蓝时，更明亮的趋势已经为这个对象。偏振度与总通量没有相关性，但有一个明显的趋势，即当测得的偏振度较高时，颜色指数更红（光谱更柔和）。
英文摘要：
We present optical photo-polarimetric observations with high temporal resolution of the blazar AO 0235+164. Our data, the first to test the photo-polarimetric behaviour of this object at very short time-scales, show significant micro-variability in total flux, colour index, linear polarization degree, and position angle. Strong inter-night variations are also detected for these parameters. Although no correlation between colour index and total flux was found, our data seem to support the general bluer-when-brighter trend already known for this object. The polarization degree, in turn, shows no correlation with total flux, but a clear trend in the sense that colour index is redder (the spectrum is softer) when the measured polarization is higher.
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