Musical black holes
Stories from Physics
for 11-14
14-16
Observations made with NASA’s Chandra X-ray Telescope have detected sound waves produced by a super massive black hole. The waves were found emanating from a black hole in the Perseus cluster of galaxies and are equivalent to a B flat which is 57 octaves below middle C. The waves are thought to originate from the collapse of cavities formed in the gas surrounding the black hole.
References
Musical back holes
Black Hole Sound Waves, 9th September 2003, NASA Website, https://science.nasa.gov/science-news/science-at-nasa/2003/09sep_blackholesounds