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Gravitational Waves Might Reveal Primordial Black Hole Mergers Just After the Big Bang

30 Nov 2017, 22:12 UTC
Gravitational Waves Might Reveal Primordial Black Hole Mergers Just After the Big Bang

SXS

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Imagine the early universe: The first massive stars sparked to life and rapidly consumed their supply of hydrogen. These “metal poor” stars lived hard and died fast, burning quickly and then exploding as powerful supernovas. This first population of stars seeded the universe with heavier elements (i.e. elements heavier than helium, elements known as “metals” by astronomers) and their deaths created the first stellar-mass black holes. But say if there were black holes bumbling around the universe before the first supernovae? Where the heck did they come from?

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