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Astronomers have recently captured new insights into black holes. In a recent study led by Curtin University, scientists have directly measured the power of jets streaming from a black hole system, offering new evidence about how these cosmic giants influence their surroundings
The research focused on Cygnus X-1, which is a well-known system consisting of a black hole and a massive supergiant star orbiting each other.
Using a network of radio telescopes spread across the Earth, scientists observed jets of energy shooting out from the black hole at extraordinary speeds.
These jets do not travel in straight lines. Instead, they appear to “dance” as they are pushed around by powerful stellar winds from the nearby star. The effect has been compared to a fountain on Earth, where strong gusts of wind bend and shift streams of water in different directions.
By carefully tracking how much the jets were deflected, researchers were able to calculate their power in real time rather than relying on long-term averages.
Great energy and speed
The findings suggest that the jets from this black hole are incredibly powerful, equivalent to the energy output of about 10,000 suns. Their speed is also impressive, with the jets travelling at roughly half the speed of light or about 15,000 kilometres per second.
This combination of speed and energy makes black hole jets one of the most extreme forces in the universe. Despite their intensity, measuring them accurately has always been a struggle.
Solving the mystery
One of the most important outcomes of the study is confirmation of a key theory in astrophysics. Researchers found that about 10 per cent of the energy generated as matter falls into a black hole is redirected into these jets.
Until this study, this figure had been an assumption in computer models of the Universe. Direct observation evidence has been difficult to obtain, making this discovery a step in the right direction.
With this measurement, scientists can now better understand how black holes transfer energy into their surroundings, influencing everything from nearby stars to entire galaxies.
Implications for the Universe
Black hole jets are not just isolated phenomena; they play a crucial role in shaping the cosmos.
By injecting energy into their environments, they can influence star formation, regulate galaxy growth, and even prevent galaxies from becoming too dense.
The new findings provide a reference point for studying black holes of all sizes, from those similar to Cygnus X-1 to the supermassive giants found at the centre of galaxies.
Future radio telescope projects, including next-generation observatories currently under construction, are expected to detect jets from millions of black holes across the Universe. With this new benchmark, scientists will be better equipped to interpret those observations and refine their models.