Supermassive Black Holes, the DNA of Galaxies?
Dr Marc Sarzi, Armagh Observatory and Planetarium
Supermassive black holes, million to billion times more
massive than the Sun, are now believed to lurk at the centre of
every galaxy. Furthermore, it would appear that supermassive
black holes ‘know’ in which galaxy they live, as bigger galaxies
contain bigger supermassive black holes and vice versa.
This suggests that the formation of galaxies and the growth of supermassive black
holes is tightly linked, which is surprising considering that despite their tremendous
mass such black holes are still much smaller than their host galaxies, just like DNA
molecules to a human body. Could they play a similarly vital role in the growth of
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