The active galaxies and the feeding supermassive black hole-powered quasars are seen as they were when the universe was less than one billion years old.
, which are seen as they were when the 13.8 billion-year-old universe was less than one billion years old. They were able to calculate both the mass of the galaxies and the mass of the supermassive black holes that are powering the quasars, designated J2236+0032 and J2255+0251. Light from these two galaxies has taken 12.9 and 12.
The first quasar was spotted in 1963, and since then, scientists have unraveled the processes that power their immense emission of light. In the 2000s, it was discovered that the masses of galaxies and their supermassive black holes are related, with the mass of stars in a galaxy around 1000 times greater than the mass of its central black hole.
The connection between the mass of galaxies and the mass of their supermassive black holes may be related to the fact that both grow via a chain of mergers between galaxies that eventually leads to the black holes at the heart of those galaxies violently colliding with each other and creating an even larger black hole.
The supermassive black hole at the center of the Milky Way, Sagittarius A* , as imaged by the Event Horizon Telescope in 2017 and released in 2022.
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