Curtin University astrophysicists measure Cygnus X-1 black hole jet power and speed
Updated
Updated · Universe Today · May 6
Curtin University astrophysicists measure Cygnus X-1 black hole jet power and speed
12 articles · Updated · Universe Today · May 6
Using 18 years of VLBA and EVN radio data, the team estimated jets at 10,000 Suns' output and about 150,000 km/s, roughly half the speed of light.
The Nature Astronomy study found stellar wind from Cygnus X-1's supergiant companion bends the jets, enabling the first direct estimates of their power and showing about 10% of infalling energy is carried away.
Researchers said the result supports assumptions used in cosmic simulations and could help calibrate future measurements of black hole jets in millions of galaxies with the Square Kilometre Array Observatory.
How can a star's powerful wind reveal the true energy of its black hole companion?
If this black hole was weaker than theorized, how would our view of the universe change?
Direct Measurement of Black Hole Jet Power in Cygnus X-1: 10,000 Suns Unleashed
Overview
In April 2026, astrophysicists led by Curtin University made a breakthrough by directly measuring the force of powerful jets from the Cygnus X-1 black hole system. Using advanced observational technology, especially Very Long Baseline Interferometry, they moved beyond theory to gather direct empirical data. This achievement provides new insight into how black holes accelerate matter to near-light speeds and affect their surroundings. The ability to quantify jet force marks a crucial step in understanding black hole mechanics and opens the door to refining our knowledge of these extreme cosmic phenomena.