Scientists observing a dramatic cosmic outburst have confirmed a prediction first explored in Albert Einstein\u2019s work on relativity more than a century ago.<\/p>\n
A global team detected the first clear signs of spacetime twisting around a rapidly spinning black hole, offering rare insight into one of general relativity\u2019s most elusive effects.<\/p>\n
Star shredded in deep space<\/p>\n
The research centres on AT2020afhd, a tidal disruption event where a supermassive black hole ripped a star apart.<\/p>\n
The star\u2019s debris formed a bright disk, while jets of matter shot outward at nearly light speed.<\/p>\n
The team tracked rhythmic shifts in radio and X-ray signals from the event. These signals repeated every 20 days and moved in sync, revealing that both the disk and the jet were wobbling together.<\/p>\n
That wobble pointed to Lense\u2013Thirring precession, the twisting of spacetime by a spinning black hole.<\/p>\n
Dr Cosimo Inserra of Cardiff University said the team captured \u201cthe most compelling evidence yet of Lense-Thirring precession.\u201d<\/p>\n
He said the behaviour fits the long-predicted effect, where a spinning black hole drags spacetime around it in a slow spiral.<\/p>\n
Inserra added that the finding also deepens understanding of how a black hole tears a star apart. He said the observations help reveal the conditions inside a tidal disruption event and the forces that shape it.<\/p>\n
Unusual signals from the event<\/p>\n
The radio signatures stood out from earlier observations of similar events.<\/p>\n
Inserra said the signals changed rapidly rather than remaining steady, noting that the team could not tie those variations to the normal energy flows around the black hole.<\/p>\n
He said this strengthened their interpretation and pointed to a new way of investigating black hole behaviour.<\/p>\n
Inserra described the changing signals as further confirmation of the dragging effect and a promising tool for studying spin and accretion.<\/p>\n
To analyse the event, the team combined X-ray data from NASA\u2019s Swift Observatory with radio measurements from the Very Large Array.<\/p>\n
They also examined the material near the black hole using spectroscopy to determine its structure and composition.<\/p>\n
The combined evidence aligned with theoretical predictions of spacetime being pulled into a wobble.<\/p>\n
Window into black hole mechanics<\/p>\n
Inserra said the observation reveals how extreme gravity shapes the environment around a spinning black hole.<\/p>\n
He compared the effect to a rotating object generating a field, noting that a black hole produces a gravitomagnetic pull that influences nearby stars and matter.<\/p>\n
He used a small part of the original analogy, describing the detection as a reminder of the complex forces at work in deep space<\/a>.<\/p>\n The discovery, he said, underscores how much remains to be uncovered as scientists continue to track these rare cosmic events.<\/p>\n Inserra added that the finding highlights the range of extraordinary objects still waiting to be identified.<\/p>\n He said the result reflects the growing ability of astronomers to observe the universe in detail and recognise the many \u201cvariations and flavours that nature has produced.\u201d<\/p>\n