Capturing the photon ring of a black hole
A team of researchers led by astrophysicist Avery Broderick used sophisticated imaging algorithms to essentially “remaster” the Event Horizon Telescope's 2019 image of the supermassive black hole at the centre of the M87 galaxy.
Simulations predicted that, hidden behind the glare of the diffuse orange glow of the 2019 image, there should be a thin, bright ring of light created by photons flung around the back of the black hole by its intense gravity.
“We turned off the searchlight to see the fireflies,” explains Broderick, an associate faculty member at Perimeter Institute and the University of Waterloo. “We have been able to do something profound – to resolve a fundamental signature of gravity around a black hole.”
Read the full paper in The Astrophysical Journal: https://iopscience.iop.org/article/10...
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