Astronomers of the University of Bologna in Italy found four huge bubbles in the center of the accumulation of galaxies using the NASA CHANDRA X-ray observatory. These mysterious structures could be caused by the activity of two supermassive black holes at the close distance from each other. This is reported in the preprint of articles published on the ARXIV website.
Researchers conducted observations of the accumulation of RBS 797 galaxies located approximately 3.9 billion light years from the ground. They found two separate pairs of cavities extending from the center of the cluster. Such types of cavities were previously observed in other accumulations of galaxies, and astronomers believe that they are as a result of emissions in the form of relativistic jets (jets) on both sides of black holes. Matter in Jetov “blows out” giant bubbles in hot gas surrounding the center of the cluster.
RBS 797 Especially because the axes of the cavities are perpendicular to each other. The explanation lies in the fact that RBS 797 contains a pair of supermassive black holes, which almost simultaneously discarded the jets in perpendicular directions. This is confirmed by the results of the radios, which revealed two point radio sources, located at a distance of 250 light years from each other. If it is confirmed that they are really black holes, they will become the closest pair of those discovered so far.
According to an alternative explanation, there is only one black hole, whose jets are rather quickly rotated. Chandra data show that the difference between the age of two pairs of cavities is less than 10 million years. However, this version requires special conditions of the environment or the properties of the black hole itself.