Scientists have shown how the echo of a black hole sounds

Since 2003, scientists have associated the black hole at the center of the Perseus galaxy cluster with sound. It was then that astronomers discovered that pressure waves emitted by a black hole cause ripples in hot gas, which can be converted into a sound that people cannot hear - it is about 57 octaves below the average perceived man.

To hear them, previously identified sound waves, NASA scientists extracted in radial directions (that is, outward from the center), and then made audible. To do this, they were scaled 57-58 octaves above the original tone.

The video simulates a radar-like "scanning" of the hole, allowing you to hear waves emitted in different directions. The visual image of this data in blue and purple shows X-ray data obtained by the Chandra telescope.

Similar project implemented and researchers from MIT: they took data from 26 black star emissions obtained by NASA's NICER X-ray telescope (NASA's Neutron star Interior Composition Explorer) and found that in 10 cases the flashes were close enough and bright enough to distinguish x-ray echo. It was converted into sound waves - also with visualization of the scan on the radar.

Such audios are not created to satisfy our idle curiosity: with their help, scientists hope to find out more about the evolution of black holes and their characteristics by analyzing and comparing X-ray emission from similar emissions.