Scientists have recorded a "strange event" emanating from the massive black hole located at the center of the Milky Way galaxy, known as Sagittarius A*. Astrophysicists Gustavo Magallanes-Guijón and Sergio Mendoza from the National Autonomous University of Mexico revealed fluctuations in the gamma-ray emissions of Sagittarius A* every 76 hours, like clockwork. The research team states, "This resembles the periodic changes in radio and X-ray emissions from the black hole, indicating the presence of orbital motion of something spiraling wildly around the black hole."
Black holes themselves do not emit any radiation that we can currently detect. However, the surrounding area is a different matter. In the intense gravitational field outside the black hole's event horizon, a lot can happen. Light emanates from the Sagittarius A* region in various wavelengths, and the intensity of this light significantly varies over time. Astronomers have identified a pattern in at least some of these wavelengths. Radio waves fluctuate on a timescale of about 70 minutes, according to a research paper published in 2022.
