The rest-frame UV/optical variability of the quasars in the Sloan Digital Sky Survey (SDSS) Stripe 82 is used to test the Corona-Heated Accretion-disk Reprocessing (CHAR) model of Sun et al. 2020. We adopt our CHAR model and the observed black-hole masses ($M_{\mathrm{BH}}$) and luminosities ($L$) to generate mock light curves that share the same measurement noise and sampling as the real observations. Without any fine-tuning, our CHAR model can satisfactorily reproduce the observed ensemble structure functions for different $M_{\mathrm{BH}}$, $L$, and rest-frame wavelengths. Our analyses reveal that a luminosity-dependent bolometric correction is disfavored over the constant bolometric correction for UV/optical luminosities. Our work demonstrates the possibility of extracting quasar properties (e.g., the bolometric correction or the dimensionless viscosity parameter) by comparing the physical CHAR model with quasar light curves.
Scaling Up: A Global Optical/X-ray Correlation For Reprocessing Across Black Hole Masses
Center for Astrophysics and Space Science, NYUAD Research Institute, New York University Abu Dhabi（纽约大学阿布扎比分校天体物理与空间科学中心）；New York University Abu Dhabi（纽约大学阿布扎比分校）；New York University（纽约大学）；Department of Physics and Astronomy, York University（约克大学物理与天文系）；Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-SUPAERO)（法国高等航空航天学院）；Department of Astronomy, Yale University（耶鲁大学天文学系）；INAF–Osservatorio Astronomico di Brera（意大利国家天体物理研究所布里埃拉天文台）
Migration Traps as Variability Attractors. I. Optical/UV Signatures of Embedded Stellar-Mass Black Holes in Active Galactic Nucleus Disks
Xiamen University（厦门大学）；SHAO-XMU Joint Center for Astrophysics, Xiamen University（厦大-上海天文台联合天体物理中心）；Shanghai Astronomical Observatory, Chinese Academy of Sciences（中国科学院上海天文台）；University of Science and Technology of China（中国科学技术大学）；Guangxi University（广西大学）
