Kinematic Signatures of Reverberation Mapping of Close Binaries of Supermassive Black Holes in Active Galactic Nuclei. II. Atlas of Two-dimensional Transfer Functions

• Published in: The Astrophysical journal. Supplement series Vol. 247; no. 1; pp. 3 - 20
• Main Authors: Songsheng, Yu-Yang, Xiao, Ming, Wang, Jian-Min, Ho, Luis C.
• Format: Journal Article
• Language: English
• Published: The American Astronomical Society 01.03.2020
• Subjects: Active galactic nuclei; Reverberation mapping; Supermassive black holes
• ISSN: 0067-0049; 1538-4365
• DOI: 10.3847/1538-4365/ab665a

Most large galaxies harbor supermassive black holes (SMBHs) in their centers, and galaxies merge. Consequently, binary SMBHs should be common in galactic nuclei. However, close binaries of SMBH (CB-SMBHs) with subparsec separation cannot be imaged directly using current facilities. Some indirect signatures, such as periodic signals in light curves and double peaks in the emission-line profile, have been used to find CB-SMBH candidates, but ambiguities still exist and no definitive conclusions can be made. We have recently proposed a new method focusing on kinematic signatures that can be derived from reverberation mapping of CB-SMBHs, one that offers a promising avenue to address this important problem. In this paper, we calculated models for a wide range of parameters, but broad-line regions of two BHs are close but still not merged. The purpose of this supplementary paper is to provide an atlas of two-dimensional transfer functions of CB-SMBHs with a wide range of orbital and geometrical parameters to aid more efficient identification of CB-SMBH candidates in reverberation mapping data.