3C 273 is an intensively monitored flat-spectrum radio quasar with both a beamed jet and blue bump together with broad emission lines. The coexistence of the comparably prominent jet and accretion disk leads to complicated variability properties. Recent reverberation mapping monitoring for 3C 273 revealed that the optical continuum shows a distinct long-term trend that does not have a corresponding echo in the Hbeta fluxes. We compile multi-wavelength monitoring data from the Swift archive and other ground-based programs and clearly find two components of emissions at optical wavelength. One component stems from the accretion disk itself and the other component can be ascribed to the jet contribution, which also naturally accounts for the non-echoed trend in reverberation mapping data. We develop an approach to decouple the optical emissions from the jet and accretion disk in 3C 273 with the aid of multi-wavelength monitoring data. By assuming the disk emission has a negligible polarization in consideration of the low inclination of the jet, the results show that the jet contributes a fraction of ~10% at the minimum and up to ~40% at the maximum to the total optical emissions. This is the first time to provide a physical interpretation to the "detrending" manipulation conventionally adopted in reverberation mapping analysis. Our work also illustrates the importance of appropriately analyzing variability properties in cases of coexisting jets and accretion disks.
Continuum Reverberation in Bright Quasars Using NASA/ATLAS
Research School of Astronomy and Astrophysics, Australian National University（澳大利亚国立大学天文与天体物理研究学院）；Centre for Gravitational Astrophysics (CGA), Australian National University（澳大利亚国立大学引力天体物理学中心）；Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast（贝尔法斯特女王大学数学与物理学院天体物理研究中心）；Research Center for Space and Cosmic Evolution, Ehime University（爱媛大学宇宙演化研究中心）；University of Belgrade-Faculty of Mathematics, Department of Astronomy（贝尔格莱德大学数学系天文学系）；Millennium Institute of Astrophysics (MAS)（天体物理学千年研究所）；Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile（智利天主教Pontificia大学物理学院天体物理研究所）
287,872 Supermassive Black Holes Masses: Deep Learning Approaching Reverberation Mapping Accuracy
School of Computer Science, University of South China（南华大学计算机学院）；School of Mathematics and Physics, University of South China（南华大学数学物理学院）；Department of Physics E. Pancini, University Federico II（费德里科二世大学物理系）
Effects of heterogeneous data sets and time-lag measurement techniques on cosmological parameter constraints from MgII and CIV reverberation-mapped quasar data
The LSST era of supermassive black holes accretion-disk reverberation mapping
维拉C。鲁宾天文台的时空遗产巡天（LSST）将探测到一个空前大的活跃吸积超大质量黑洞样本，其典型的吸积盘（AD）大小为几个光日。这给利用带间连续延迟测量活动星系核AD尺寸的混响映射带来了挑战。我们使用我们的度量AGNTimeLagMetric检查LSST节奏策略对AD RM的影响。它解释了红移、节奏、星等极限和尘埃消光的星等修正。在不同的LSST节奏策略上运行我们的度量，我们产生了LSST光度RM测量的性能估计的图谱。我们提供了一个上限的估计数量的类星体，其AD时滞可以计算在0<z <7 using the features of our metric. We forecast that the total counts of such objects will increase as the mean sampling rate of the survey decreases. The AD time lag measurements are expected for >1000源在每个深钻领域（DDF，10平方米）。度），这些源的红移分布在z~1处达到峰值。我们发现LSST观测策略具有良好的节奏（~ 5天）和长的累积季节（~9年），如LSST DDF所建议的，有利于AD大小测量。我们为最合适的DDF节奏创建合成LSST光变曲线，并确定RM时间滞后，以证明基于所提出的度量的…
