OJ287 Archives - SpaceNews

Artistic illustration of OJ287 as a binary black hole system. The secondary black hole of 150 million solar masses moves around the primary black hole of 18 billion solar masses. A disk of gas surrounds the latter. The secondary black hole is forced to impact on the accretion disk twice during its 12-year orbit. The impact produces a blue flash which was detected in February 2022. In addition, the impact also induces the secondary black hole to bright bursts of radiation several weeks earlier, and these bursts have also been detected as a direct signal from the secondary black hole. CREDIT AAS 2018

First Detection Of Secondary Supermassive Black Hole In A Well-known Binary System

Supermassive black holes that weigh several billion times the mass of our Sun are present at the centres of active galaxies.

by SpaceRef June 6, 2023July 15, 2024