In 2017, researchers used a virtual telescope the size of our planet to image the shadow of a supermassive black hole for the first time. The
The
“Confirmation of the ring in a completely new data set is a huge milestone for our collaboration and a strong indication that we are looking at a black hole shadow and the material orbiting around it,” Dr Keiichi Asada of the Academia Sinica Institute for Astronomy and Astrophysics in Taiwan said in a
M87* weighs 6.5 billion times the mass of our Sun and is located 53.5 million light-years away. The shift in the brightness spot seen in the new observations was predicted, the idea being that the emission from the turbulent, messy
The EHT images of these incredible objects are possible thanks to a fantastic property of light. Observations from radio telescopes that are a certain distance apart can be combined in a way that is equivalent to a telescope the size of their distance. By combining radio telescopes around the world, the initial 2017 EHT was the size of our planet. For the 2018 observations, new telescopes in Greenland and Mexico had been added, and even more have been added since.
“The inclusion of the Greenland Telescope in our array filled critical gaps in our earth-sized telescope,” Rohan Dahale, a PhD candidate at the Instituto de Astrofísica de Andalucía. “The 2021, 2022, and the forthcoming 2024 observations witness improvements to the array, fuelling our enthusiasm to push the frontiers of black hole astrophysics.”
In 2022 we got the first image of our own galaxy’s supermasive black hole,
The study is published in the journal