论文标题
SDSS中的6.4岁光学准周期振荡J075217.84+193542.2：中央二进制黑洞系统的新候选人
A 6.4yr optical quasi-periodic oscillations in SDSS J075217.84+193542.2: a new candidate for central binary black hole system
论文作者
论文摘要
在此手稿中，在Quasar SDSS J075217.84+193542.2（= \ obj）中检测到6.4元光学的准周期振荡（QPO），在红移0.117中检测到，其中13.6 Yr-l-l-l-ling曲线由CSS和As asas-sn timentions s n s sinsioid senusioid forksiotial s necipity s neciosioide。 6.4yr QPO可以通过置信度高于99.99 \％的广义隆布式期刊，并通过自动相关分析结果以及WWZ技术进一步确认。光学QPO强烈表明\ obj中的一个中央二进制黑洞（BBH）系统。在广泛的H $α$中，确定的两个宽阔的高斯组件可以导致BBH系统，预期空间分离约为0.02％，预期的两个中央BHS约为$ 8.8 \ times10^7 {\ rm m_ \ odot} $ 8.8 \ times10^7 {\ rm m_ \ odot} $，$ 1.04 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ odod}同时，我们检查用于解释光学QPO的磁盘进度。但是，在磁盘进动假设下，来自中央BH的确定的光发射区的大小约为$ 40 {\ rm r_g} $两倍，是通过磁盘尺寸和BH质量之间的相关性小于预期的NUV发射区域的大小，表明磁盘预测不是首选。而且，由于较低的无线电响度在0.28左右，因此也可以完全排除喷气预算。此外，只有0.08 \％的概率可以确定为通过汽车工艺随机创建的光曲线错误检测的QPO，重新引起了报道的光学QPO。
In this manuscript, a 6.4yr optical quasi-periodic oscillations (QPOs) is detected in the quasar SDSS J075217.84+193542.2 (=\obj) at a redshift 0.117, of which 13.6yr-long light curve from CSS and ASAS-SN directly described by a sinusoidal function with a periodicity 6.4yr. The 6.4yr QPOs can be further confirmed through the Generalized Lomb-Scargle periodogram with confidence level higher than 99.99\%, and through the auto-correlation analysis results, and through the WWZ technique. The optical QPOs strongly indicate a central binary black hole (BBH) system in \obj. The determined two broad Gaussian components in the broad H$α$ can lead to the BBH system with expected space separation about 0.02pc between the expected two central BHs with determined virial BH masses about $8.8\times10^7{\rm M_\odot}$ and $1.04\times10^9{\rm M_\odot}$. Meanwhile, we check the disk precessions applied to explain the optical QPOs. However, under the disk precession assumption, the determined optical emission regions from central BH have sizes about $40{\rm R_G}$ two times smaller than sizes of the expected NUV emission regions through the correlation between disk size and BH mass, indicating the disk precessions are not preferred. And due to the lower radio loudness around 0.28, jet precessions can be also totally ruled out. Furthermore, only 0.08\% probability can determined as the QPOs mis-detected through light curves randomly created by the CAR process, re-confirming the reported optical QPOs.
