论文标题
J1328+2751中的双峰线，双VLBI组件和进攻喷气机
Double-peaked Lines, Dual VLBI Components, and Precessing Jets in J1328+2751
论文作者
论文摘要
在这项工作中，我们报告了一个带有预动力喷气机，双峰发射线的射电星系，并在很长的基线干涉法（VLBI）观测值中，有两个紧凑的无线电组件，预计分离约为6 parsec。发射线的峰分离可能表明存在具有6.3 parsec的超质量黑洞二进制（BBH），与VLBI结果匹配。适用于J1328+2751喷射的运动学喷射进程模型表明，如果它是BBH，则主要黑洞的积聚磁盘与二进制系统轨道并不是共面，从而使其在二级黑洞产生的扭矩的效果下使其射流预言。但是，我们发现Bardeen-Petterson效应还可以提供与该来源中推断出的JET进动期限兼容的进动时间标准。该来源先前已被确定为重新启动的双双射电星系（DDRG）。因此，我们的发现对DDRG的性质具有重要的影响。
In this work, we report a radio galaxy with precessing jets, double-peaked emission lines and the presence of two compact radio components with a projected separation of ~6 parsec in Very Long Baseline Interferometry (VLBI) observations. The emission line peak separations could be suggesting the presence of a supermassive black hole binary (BBH) with a separation of 6.3 parsec, matching the VLBI results. The kinematic jet precession model applied to the jets of J1328+2751 indicates that if it is a BBH, the accretion disk of the primary black hole is not coplanar with the binary system orbit, making its jet precess under the effect of the torque produced by the secondary black hole. However, we find that the Bardeen-Petterson effect can also provide precession timescales compatible with the jet precession period inferred in this source. This source has previously been identified as a restarted double-double radio galaxy (DDRG). Our findings therefore have important ramifications for the nature of DDRGs in general.
