“In outer space, no one will hear you scream. » Everyone who sees Foreigner, know. Because in a vacuum no sound can reproduce. In the void. But in a cluster of galaxies surrounded by gas, it is something else. And NASA scientists are now offering us something extraordinary. Let’s hear… the black hole song!
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Perseus Cluster is group of galaxies located about 250 millionEnglish on earth. It includes nearly 200 galaxies. And in the middle is a black hole. In 2003, NASA researchers discovered that the waves released through these black holes cause ripples in the hot gases of the group. Ripples translates them into musical notes. However, a note that was not heard byhuman ears because it’s about 57 octaves below middle C.
today astronomer offers what can be called a new sonication of what black hole. Although this time they wanted to revisit the actual sound waves found in the data from the space observatory sinar X Chandra. What? Real sound waves? But let’s not say that there is no sound in space?
Another black hole sound
This is true when the space is considered empty. But a cluster of galaxies contains hundreds of galaxies. A large amount of gas surrounded them. This causes the sound waves to propagate. And it’s this wave that the astronomers here have pulled to make it audible by magnifying it frequency several million billion times.
Researchers are also working on the sonication of other black holes. Perhaps the most famous of them, because of its M87 first picture obtained fromEvent Horizon Telescope (EHT) was unveiled in 2019. However, it is not on this image that astronomers rely on extracting sound from it. But in others, called by Chandratalk Hubble Space Telescope and through the large millimeter/submillimeter network Atacama (Alma, Chile). Active data wavelength otherwise, the researchers adjusted for different pitch ranges. The lowest for the waves radio from Alma, medium tones for Hubble optical data and higher tones for Chandra X-rays.
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