Intra-day variability of BL Lacertae from 2016 to 2018
Intra-day variability of BL Lacertae from 2016 to 2018
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DOI：
10.1088/1674-4527/21/10/259
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发表时间：
2021-08
影响因子：
1.8
通讯作者：
Tian Li;Jianghua Wu;Nankun Meng;Yan Dai;Xiaoyuan Zhang
中科院分区：
文献类型：
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作者：
Tian Li;Jianghua Wu;Nankun Meng;Yan Dai;Xiaoyuan Zhang
在2016-2018年期间，我们在B、V、R和I波段监测了BL Lacertae 14个晚上。该源在12个晚上显示出显著的日内变化。我们进行了颜色幅度分析，发现该源表现出更蓝时，更亮的色差。这种越亮越蓝的行为至少部分是由较短波长处的较大变化幅度引起的。在不同波长的变化相关性很好，没有显示带间的时间滞后。
We monitored BL Lacertae in the B, V, R and I bands for 14 nights during the period of 2016–2018. The source showed significant intra-day variability on 12 nights. We performed color-magnitude analysis and found that the source exhibited bluer-when-brighter chromatism. This bluer-when-brighter behavior is at least partly caused by the larger variation amplitude at shorter wavelengths. The variations at different wavelengths are correlated well and show no inter-band time lag.