论文标题
比较X射线和$γ$ ray检测到的窄线1个星系的比较晚上的光学变异性
Comparative intra-night optical variability of X-ray and $γ$-ray detected narrow-line Seyfert 1 galaxies
论文作者
论文摘要
在表征不同类别的窄线Seyfert 1星系（NLSY1S）的系统内光学变异性（INOV）中，我们在这里报告了在X射线和$γ$ -RAIR频段中检测到的NLSY1集的首次比较INOV研究。我们的样本由X射线检查中检测到的18个来源，但在$γ$ -rays（以下简称X $ \ textunderscore $ nlsy1s）和7个以$γ$ -rays中检测到的来源（以下是G $ \ textundunderscore $ nlsy1s），其中5个在X射线中也检测到其中5个。我们分别在24和21个会话中分别监视了这两组NLSY1S，每个会话至少3小时。发现这两组的INOV占空比分别为12 \％和53 \％（在99 \％的置信度下）。在18 x $ \ textUndunderscore $ nlsy1s的集合中，发现INOV占空比为13个无线电广播成员（在14个会话中进行监控）和43个无线电大通成员（10个会话）为零。后者与此处的G $ \ textundersCore $ nlsy1s（所有这些都是无线电大声）相似的53 \％的占空比。因此，似乎无线电响度水平是INOV检测背后的主要因素，而高能辐射的模式仅起着较小的作用。
In a systematic program to characterise the intra-night optical variability (INOV) of different classes of narrow-line Seyfert 1 galaxies (NLSy1s), we report here the first comparative INOV study of NLSy1 sets detected in the X-ray and $γ$-ray bands. Our sample consists of 18 sources detected in X-ray but not in $γ$-rays (hereafter x$\textunderscore$NLSy1s) and 7 sources detected in $γ$-rays (hereafter g$\textunderscore$NLSy1s), out of which 5 are detected also in X-rays. We have monitored these two sets of NLSy1s, respectively, in 24 and 21 sessions of a minimum of 3 hours duration each. The INOV duty cycles for these two sets are found to be 12\% and 53\%, respectively (at a 99\% confidence level). In the set of 18 x$\textunderscore$NLSy1s, INOV duty cycle is found to be zero for the 13 radio-quiet members (monitored in 14 sessions) and 43\% for the 5 radio-loud members (10 sessions). The latter is very similar to the aforementioned duty cycle of 53\% found here for the set of g$\textunderscore$NLSy1s (all of which are radio-loud). Thus it appears that the radio loudness level is the prime factor behind the INOV detection and the pattern of the high-energy radiation plays only a minor role.
