Continuum Reverberation Mapping of the Accretion Disks in Two Seyfert 1 Galaxies
M. M. Fausnaugh, D. A. Starkey, Keith Horne, C. S. Kochanek, B. M. Peterson, M. C. Bentz, K. D. Denney, C. J. Grier, D. Grupe, R. W. Pogge, G. DeRosa, S. M. Ada… 展开作者
M. M. Fausnaugh, D. A. Starkey, Keith Horne, C. S. Kochanek, B. M. Peterson, M. C. Bentz, K. D. Denney, C. J. Grier, D. Grupe, R. W. Pogge, G. DeRosa, S. M. Adams, A. J. Barth, Thomas G. Beatty, A. Bhattacharjee, G. A. Borman, T. A. Boroson, M. C. Bottorff, Jacob E. Brown, Jonathan S. Brown, M. S. Brotherton, C. T. Coker, S. M. Crawford, K. V. Croxall, Sarah Eftekharzadeh, Michael Eracleous, M. D. Joner, C. B. Henderson, T. W. -S. Holoien, T. Hutchison, Shai Kaspi, S. Kim, Anthea L. King, Miao Li, Cassandra Lochhaas, Zhiyuan Ma, F. MacInnis, E. R. Manne-Nicholas, M. Mason, Carmen Montuori, Ana Mosquera, Dale Mudd, R. Musso, S. V. Nazarov, M. L. Nguyen, D. N. Okhmat, ChristopherA. Onken, B. Ou-Yang, A. Pancoast, L. Pei, Matthew T. Penny, Radosław Poleski, Stephen Rafter, E. Romero-Colmenero, Jessie Runnoe, David J. Sand, Jaderson S. Schimoia, S. G. Sergeev, B. J. Shappee, Gregory V. Simonian, Garrett Somers, M. Spencer, Daniel J. Stevens, Jamie Tayar, T. Treu, Stefano Valenti, J. VanSaders, S. VillanuevaJr., C. Villforth, Yaniv Weiss, H. Winkler, W. Zhu
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Accepted to ApJ, please send comments to faus@mit.edu. 24 pages, 8 figures
We present optical continuum lags for two Seyfert 1 galaxies, MCG+08-11-011 and NGC 2617, using monitoring data from a reverberation mapping campaign carried out in 2014. Our light curves span the ugriz filters over four months, with median cadences of 1.0 and 0.6 days for MCG+08-11-011 and NGC\,2617, respectively, combined with roughly daily X-ray and near-UV data from Swift for NGC 2617. We find lags consistent with geometrically thin accretion-disk models that predict a lag-wavelength relation of $τ\propto λ^{4/3}$. However, the observed lags are larger than predictions based on standard thin-disk theory by factors of 3.3 for MCG+08-11-011 and 2.3 for NGC\,2617. These differences can be explained if the mass accretion rates are larger than inferred from the optical luminosity by a factor of 4.3 in MCG+08-11-011 and a factor of 1.3 in NGC\,2617, although uncertainty in the SMBH masses determines the significance of this result. While the X-ray variability in NGC\,2617 precedes the UV/optical variability, the long 2.6 day lag is problematic for coronal reprocessing models.
Reverberation Mapping of the Seyfert 1 Galaxy NGC 7469
对塞弗特1号星系NGC 7469进行的一项大型混响映射研究得出了β 4861和He II 4686的发射线滞后，以及大约1000万太阳质量的中心黑洞质量测量结果，与以前的测量结果一致。在监测活动期间，非常低的可变性使我们无法实现从数据中恢复速度延迟图的最初目标，但随着新的Hbeta测量，NGC 7469不再是发射Hbeta的宽线区域的大小与AGN光度之间关系的异常值。有必要降低连续谱和Hbeta和He II 4686线光变曲线以及不同时间序列分析方法的存档UV数据的趋势，以获得一致的结果。
Monitoring AGNs with Hβ Asymmetry. II. Reverberation Mapping of Three Seyfert Galaxies Historically Displaying Hβ Profiles with Changing Asymmetry: Mrk 79, NGC 3227, and Mrk 841
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. III. Detection of Fe II Reverberation in Nine Narrow-Line Seyfert 1 Galaxies
Intensive X-ray/UVOIR continuum reverberation mapping of the Seyfert AGN MCG+08-11-11
University of Portsmouth（朴茨茅斯大学）；Wayne State University（韦恩州立大学）；University of Southampton（南安普顿大学）；Spectral Sciences Inc.（光谱科学公司）；University of St Andrews（圣安德鲁斯大学）；Texas A&M University（德克萨斯农工大学）；Tel Aviv University（特拉维夫大学）；University of Durham（杜伦大学）；Eureka Scientific Inc.（尤里卡科学公司）；Texas Tech University（德克萨斯理工大学）；University of Leicester（莱斯特大学）
Space Telescope and Optical Reverberation Mapping Project. I. Ultraviolet Observations of the Seyfert 1 Galaxy NGC 5548 with the Cosmic Origins Spectrograph on Hubble Space Telescope
我们描述的第一个结果从一个为期六个月的混响映射实验在紫外线的基础上170观测的塞弗特1星系NGC 5548与宇宙起源光谱仪的哈勃太空望远镜。在连续谱和宽发射谱线中发现了显著的相关变异性，发射谱线中的振幅范围为~30%至2倍，连续谱中的振幅范围为3倍。所有强发射线的变化都滞后于连续谱线的变化，其中He II 1640滞后于连续谱线约2.5天，Lyman alpha 1215、C IV 1550和Si IV 1400滞后约5-6天。连续谱和发射谱线之间的关系是复杂的。特别是，在下半年的活动，所有的发射线滞后增加了1.3-2的因素和差异出现在详细结构的连续谱和发射线的光变曲线。速度分辨互相关分析表明，相干结构的滞后与视线速度的发射线; C IV的高速机翼响应连续变化更迅速地比线的核心，可能表明更高的速度BLR云在较小的距离，从中央引擎。然而，莱曼α的速度依赖性响应更为复杂，需要进一步分析。
Multi-Wavelength Monitoring and Reverberation Mapping of a Changing Look Event in the Seyfert Galaxy NGC 3516
我们介绍了2018年至2020年进行的AGN NGC 3516的光度和光谱监测活动的结果，涵盖了从X射线到光学的波长范围。这些设施包括CMO SAI MSU的望远镜，2.3米WIRO望远镜以及Swift的XRT和UVOT。我们发现NGC 3516在2020年春末变得明亮，可以归类为Sy1.5。我们已经测量了Balmer和He II 4686线对连续变化的响应中的时间延迟。在最佳表征的宽H-β谱线的情况下，蓝翼的连续变率延迟约为17天，而红翼明显更短，为9天，这表明流入。随着宽谱线的增强，蓝边开始主导巴耳末谱线，导致在这种高状态下具有蓝移峰的非常不对称的轮廓。在爆发期间，X射线通量在2020年4月1日达到最大值，这是雨燕天文台观测到的NGC 3516的最高值。X射线硬光子指数变得更软，2020年4月21日最大值约为1.8，而2020年之前的早期时期平均值约为0.7。我们发现，直到2020年4月初，紫外线和光学变化与X射线的相关性很好（有1 - 2天的小时间延迟），但后来，直到2020年6月底，这些变化都没有相关性。我们认为，这一事实可能是由于康普顿厚的云层穿过视线造成的部分遮蔽的结果。
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XV. Reverberation Mapping of Mg II Emission Lines
University of Chinese Academy of Sciences（中国科学院大学）；Dongguan Neutron Science Center（东莞中子科学中心）；National Astronomical Observatories of China, Chinese Academy of Sciences（中国科学院国家天文台）；Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台空间天文与技术重点实验室）；Anyang Normal University（安阳师范学院）；Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台光学天文重点实验室）；Yunnan Observatories, Chinese Academy of Sciences（中国科学院云南天文台）；Quanzhou Normal University（泉州师范学院）；The Kavli Institute for Astronomy and Astrophysics, Peking University（北京大学科维理天文与天体物理研究所）；Peking University（北京大学）
Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XII. Reverberation Mapping Results for 15 PG Quasars from a Long-Duration High-Cadence Campaign
X-ray disc reverberation modelling of the X-ray/UV/optical spectral/timing properties of Fairall 9
University of Crete（克里特大学）；Università Federico II（那不勒斯费德里科二世大学）；Institute of Astrophysics, FORTH（FORTH天体物理研究所）；Department of Physics and Institute of Theoretical and Computational Physics, University of Crete（克里特大学物理系与理论与计算物理研究所）；MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology（麻省理工学院卡弗里天体物理学与空间研究研究所）；California Institute of Technology（加州理工学院）；Astronomical Institute of the Academy of Sciences（科学院天文研究所）
The Narrow-Line Seyfert 1 Phenomenon: Accretion State Versus Host Galaxy Properties
Shanghai Astronomical Observatory, Chinese Academy of Sciences（中国科学院上海天文台）；School of Astronomy and Space Science, University of Chinese Academy of Sciences（中国科学院大学天文与空间科学学院）；Kavli Institute for Astronomy and Astrophysics, Peking University（北京大学科维理天文与天体物理研究所）
Variable X-ray reverberation in the rapidly accreting AGN Ark 564: the response of the soft excess to the changing geometry of the inner accretion flow
