Algorithms gave us the black hole pic. This scientist helped create them.
The first photo of a black hole, taken using a global network of telescopes, conducted by the Event Horizon Telescope project. By Ben Guarino Ben Guarino Reporter covering the practice and culture of science Email Bio Follow April 10 at 3:49 PM Katherine Bouman had a secret: An algorithm she’d developed had stitched together a picture of a black hole. She told nobody except her colleagues. Until today.
The image shared Wednesday, which has been likened to a molten doughnut or the Eye of Sauron or even a Rembrandt, is a composite of several such reconstructions. “We blurred two of the images and then averaged them to the other one to get the image that we showed today,” Bouman said. The ring of material that surrounds Messier 87, which has the mass of 6.5 billion suns, “is something that we were incredibly confident about.
Q: What was the algorithm’s role for this image, stitching together data from telescopes across the planet? What we have to end up doing is imposing things called “regularizors” or “priors” that allow us to say, “Okay, of all of the images that possibly could fit this data, this set of images is most likely.”
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