Ben Turner is a U.K. based staff writer at Live Science. He covers physics and astronomy, among other topics like tech and climate change. He graduated from University College London with a degree in particle physics before training as a journalist.
Astronomers may have found tantalizing evidence that dark energy — the mysterious energy driving the accelerating expansion of our universe — could be connected with black holes.
Now, a new study claims to have found the first hints of a connection between the two seemingly unrelated phenomena: a match between the increasing density of dark energy and the growing mass of black holes as the universe aged. The researchers published their findings Oct. 28 in the Journal of Cosmology and Astroparticle Physics.
To search for clues that dark energy may be connected to black holes, the researchers used the Dark Energy Spectroscopic Instrument mounted on the Nicholas U. Mayall 4-meter Telescope in Arizona, which pinpoints the monthly positions of millions of galaxies to study how the universe expanded up to the present day. This enables astronomers to infer the density of dark energy throughout the universe's life from the speed at which the cosmos stretches outward.
"The two phenomena were consistent with each other — as new black holes were made in the deaths of massive stars, the amount of dark energy in the universe increased in the right way," co-author Duncan Farrah, an associate professor of physics at the University of Hawaii, said in the statement."This makes it more plausible that black holes are the source of dark energy."
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