An Ancestor of Supermassive Black Holes, Found at Cosmic Dawn universetoday storybywill
As they indicate in their paper, GNz7q was discovered based on the NASA/ESA Hubble Space Telescope data. Based on their analysis, the object had properties that lay somewhere between those of a galaxy and those of a quasar. This led them to conclude that the object was the predecessor of an SMBH that existed over 13 billion years ago, just 750 million years after the Big Bang. This coincides with the period known as “Cosmic Dawn,” when the first galaxies in the Universe formed.
Interestingly enough, GNz7q was found at the center of the Hubble GOODS-N, which happens to be one of the most intensely-studied survey fields. The team was only able to notice it “hiding in plain sight” because of the survey’s richly-detailed multi-wavelength datasets. Without these, the object would have easily gone unnoticed since it lacks the distinguishing features that had quasars during the early epochs of the Universe.
The discovery is linked to a certain type of quasars , specifically those that have very high rates of star formation and dust at the center. With older quasars, such as those observed closer to the Milky Way, their brightness results from SMBHs causing vast amounts of gas to fall into orbit around them at relativistic speeds . As the gas infalls towards the outer edge of the black hole , it heats up due to intense friction and releases tremendous amounts of energy as light and heat.
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