Electromagnetic and gravitational radiation of blazar OJ 287

• Published in: iScience 2024-04, Vol.27 (4), p.109427-109427, Article 109427
• Main Authors: Volvach, Alexandr, Volvach, Larisa, Larionov, Mikhail
• Format: Article
• Language: English
• Subjects: Astrophysics; Physics; Space sciences
• ISSN: 2589-0042; 2589-0042
• DOI: 10.1016/j.isci.2024.109427

Based on long-term monitoring data of the blazar, a new model for determining the parameters of this close binary supermassive black hole (SMBH) is proposed. The model uses the laws of celestial mechanics and results of harmonic analysis of observational data obtained mainly in the radio and optical wavelength ranges. Within the framework of the proposed model, the masses of SMBH companions, the values of their orbital elements, the parameters of the accretion disk, and its dimensions and thickness were determined. The structure and dynamics of SMBHs and their interaction with the accretion disk are considered. It is shown that OJ 287 may be the most massive close binary SMBH with comparable masses. The obtained characteristics of the SMBH are used to estimate the level of gravitational wave radiation, the lifetime of the system before the merger, as well as the magnitude of changes in the orbits of the companions. [Display omitted] •A new model for determining the parameters of close binary supermassive black hole•OJ 287 may be the most massive close binary SMBH with comparable masses•This system is one of the most powerful emitters of GWs in the universe•The lifetime before the merges of components shows that it is a short-lived object Physics; Space sciences; Astrophysics