论文标题
部分可观测时空混沌系统的无模型预测
Intranight optical variability of low-mass Active Galactic Nuclei: A Pointer to blazar-like activity
论文作者
论文摘要
这项研究的目的是首次表征低质量活性银河核（LMAGN）的省视光学变异性（INOV），该核（LMAGN）拥有一个质量$ $ M_ {BH} \ sim 10^6 m _ {\ odot} $的黑洞（BH），即质量较小，甚至比银色的黑洞s* - 均未达到黑洞的范围，而不是质量的黑洞。 （smbh，$ m_ {bh} $ $ \ sim $ $ 10^8-10^9 m _ {\ odot} $），据信可以供电。因此，LMAGN是AGN的关键子类，填补了银河X射线二进制物的SMBH和恒星质量BHS之间的较大差距。我们已经进行了36次课程运动，对X射线和无线电频段已经检测到的12个LMAGN的良好定义的代表性样本进行了内在光学监测。发现这组LMAGN在统计上与Blazars（M $ _ {BH} \ GTRSIM $ 10 $^{8-9} $ M $ _ {\ odot} $）的统计水平展示了INOV（m $ _ {bh} \ gtrsim $ 10 M $ _ {\ odot} $）也被认为具有相对论喷气机。这表明Blazar级活动甚至可以由中央发动机维持，黑洞接近上层质量黑洞的上限（$ M_ {BH} $ $ \ sim $ \ sim $ $ $ $ 10^3-10^3-10^6 m _ {\ odot} $）。
This study aims to characterise, for the first time, intranight optical variability (INOV) of low-mass active galactic nuclei (LMAGN) which host a black hole (BH) of mass $M_{BH} \sim 10^6 M_{\odot}$, i.e., even less massive than the Galactic centre black hole Sgr A* and 2-3 orders of magnitude below the supermassive black holes (SMBH, $M_{BH}$ $\sim$ $10^8 - 10^9 M_{\odot}$) which are believed to power quasars. Thus, LMAGN are a crucial subclass of AGN filling the wide gap between SMBH and stellar-mass BHs of Galactic X-ray binaries. We have carried out a 36-session campaign of intranight optical monitoring of a well-defined, representative sample of 12 LMAGNs already detected in X-ray and radio bands. This set of LMAGN is found to exhibit INOV at a level statistically comparable to that observed for blazars (M$_{BH} \gtrsim$ 10$^{8-9}$ M$_{\odot}$) and for the $γ$-ray detected Narrow-line Seyfert1 galaxies (M$_{BH}\sim 10^7$ M$_{\odot}$) which, too, are believed to have relativistic jets. This indicates that the blazar-level activity can even be sustained by central engines with black holes near the upper limit for Intermediate Mass Black Holes ($M_{BH}$ $\sim$ $10^3 - 10^6 M_{\odot}$).
