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New study links black holes to dark energy

New study links black holes to dark energy

In a published paper, researchers at the University of Hawaii at Manoa say they have discovered the first proposed astrophysical source of dark energy. This is a phenomenon known as “cosmological coupling,” in which a black hole is coupled to the ever-evolving universe. Pictured is the first black hole image released on April 10, 2019, captured using Event Horizon Telescope observations of the center of galaxy M87.NASA/United Press International

February 15 (United Press International) — Scientists have found for the first time evidence of a “cosmological coupling,” linking black holes to dark energy.

Researchers at the University of Hawaii at Manoa sifted through nine billion years of data to make the discovery. In two published studies, astrophysicists Duncan Farrah and Kevin Croker combined their expertise with observations of researchers around the world to shed light on the interior of black holes substances that may be present.


They say they have found the first evidence of “cosmological coupling,” a newly predicted phenomenon in Einstein’s theory of gravity that occurs only when black holes exist in an evolving universe. can happen.

According to the researchers, cosmic coupling refers to the coupling, or connection, between the black hole and the expanding universe.

“We were really saying two things at the same time,” lead author farah says“There is evidence that typical black hole solutions don’t work for you for a long, long time, and we’ve proposed the first astrophysical source of dark energy.”

published in The Astrophysical Journal Letters “We found evidence for cosmologically coupled mass growth between these black holes, excluding zero cosmological coupling, with 99.98% confidence,” the researchers wrote. “Thus, we propose that stellar remnant black holes are the astrophysical origin of dark energy.” … “

The researchers found that the growth of black hole mass appears to correlate with the cosmological coupling predictions of black holes, but also contains vacuum energy.

Farrah and Croker say the study also shows that black holes have been gaining mass over billions of years, which cannot be explained by currently known black hole processes.

Since black holes come from dead stars, the team found that if you can determine how many massive stars are forming, you can also estimate the number of black holes and how much they have grown through cosmological coupling.

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