Groundbreaking Discovery: Astronomers Unveil Unprecedented Power and Speed of Black Hole Jets

CAPE CANAVERAL, Fla. – In a groundbreaking achievement, researchers have successfully quantified the immense power of jets emanating from a black hole for the first time.

An international team announced Thursday that the energy output from this nearby black hole-star system matches the intensity of 10,000 suns. The jets, they observed, travel at an astonishing speed of approximately 355 million mph (540 million kph), which is about half the speed of light.

This system, known as Cygnus X-1, is situated 7,200 light-years from Earth and includes the first black hole ever identified over 50 years ago, alongside a massive blue supergiant star. To put it in perspective, a light-year equates to nearly 6 trillion miles (9.7 trillion kilometers).

Steve Prabu of the University of Oxford, along with his team, derived these insights from 18 years of detailed radio imaging data collected by an international array of telescopes. Prabu, who was affiliated with Australia’s Curtin University at the time of the research, spearheaded the study, which was recently published in Nature Astronomy.

These “dancing jets,” as Prabu describes them, were observed to be propelled in opposite directions by the stellar wind from the companion star. The team’s calculations, based on the curvature of the jets due to the wind along with sophisticated computer simulations, allowed them to capture the jets’ extraordinary power.

Until now, a black hole’s jet power had to be averaged over tens of thousands of years, the researchers said.

Prabu said a key finding is that 10% of all the energy released as matter falls toward the black hole is carried away by the jets.

On the skimpy side as black holes go, the one in Cygnus X-1 is continually pulling gases from its stellar playmate as they orbit one another. Discovered in the 1960s, the binary system is located in our Milky Way’s Cygnus, or swan, constellation.

The supergiant star feeds material to the black hole, giving it “something to ‘eat’ and launch as jets,” Prabu said in an email.

These jets can help scientists better understand how black holes help shape galaxies and other cosmic structures through large-scale shocks and turbulence.

Prabu plans to apply similar techniques to other black holes. “It would be exciting to measure jet power in many more systems,” he said.

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