Black holes seem to like drum-and-bass parties. Or maybe we should just call them bass parties, since the pitch of sound emitted from these holes are 57 octaves below that of middle C. An octave represents a unit of 8 notes, which means it sits 456 notes below middle C (the note in the middle of a piano)!
The tone frequency is more than a million, billion times deeper than the limits of the human ear (Guess the neighbours won’t be calling the police)
NASA's orbiting Chandra X-ray Observatory tuned into these wavelengths as they were emitted from the Perseus A Cluster, a giant clump of galaxies 250 million light-years from Earth. Researchers presume a “super massive” black hole lies (or parties?) in the middle of this cluster.
They discovered this by analysing a pattern of X-rays coming from the superheated gases and saw jets of extremely hot matter shooting from a single point. The compression of the jets is what apparently causes the sound waves.
Seems like one hot party!
Source: Space.com
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