Li, Sha-Sha https://orcid.org/0000-0003-3823-3419
Feng, Hai-Cheng https://orcid.org/0000-0002-1530-2680
Wu, Jiancheng https://orcid.org/0000-0002-2581-8154
Bai, J. M.
Liu, H. T. https://orcid.org/0000-0002-2153-3688
Lu, Kai-Xing https://orcid.org/0000-0002-2310-0982
Sun, Mouyuan https://orcid.org/0000-0002-0771-2153
Wang, Jian-Guo https://orcid.org/0000-0003-4156-3793
Funding for this research was provided by:
National Natural Science Foundation of China (12203096)
National Natural Science Foundation of China (12573021)
National Natural Science Foundation of China (12303022)
Article Title: The Most Luminous H β Reverberation Mapping of E1821+643 Indicates the Lower Boundary of the Radius–Luminosity Relation
Journal Title: The Astrophysical Journal
Article Type: paper
Copyright Information: © 2026. The Author(s). Published by the American Astronomical Society.
Publication dates
Date Received: 2025-10-27
Date Accepted: 2026-01-25
Online publication date: 2026-02-18