Astronomers have announced that they will reveal the first-ever photographic image of a black hole.
As per the US National Science Foundation website, the final results from Event Horizon Telescope (EHT) project will be announced via a press conference tomorrow on April 10 at 6:30 pm IST.
Astronomers will hold “six major press conferences” simultaneously to announce the first results of the Event Horizon Telescope (EHT), which was designed precisely for that purpose.
Taking a picture of a black hole is difficult because they don’t emit or reflect any light. So, what are we going to see? “They’re trying to get an image of the black hole’s shadow,” says Avi Loeb at Harvard University. Black holes are surrounded by bright material glowing as it falls in to their maw, and part of this material should be obscured by the black hole itself.
“It’s very different from the shadow cast by an opaque object because a black hole isn’t opaque, it’s absorbing light,” says Loeb. “As a result, we should see a dark inner region surrounded by a sliver of light that looks like a crescent moon.”
That crescent shape is predicted by Albert Einstein’s theory of special relativity, which says that matter moving towards us will look brighter and anything moving away would be dimmed. We may also see the effects of the immense gravity of a black hole, says Loeb, in the form of gravitational lensing which can bend light as it passes nearby.