DJ Cat Miester BAO Plays That Hyperbass

In a Why This Universe podcast Dan Hooper and Shalma Wegsman summarise some of the important background of the ‘sound’ that filled the early universe and this really low freq (10-13 Hz) at the time of the Big Bang. Since then space has been stretched so this is an even lower frequency  deep, deep, deep hyperbass waves or ‘music’.

Can we learn anything from this hyperbass music?

By studying these acoustic waves in the pattern of hot and cold spots in the Cosmic Microwave Background (CMB), cosmologists can learn a lot about our early universe’s history, evolution and its composition since the CMB’s hot and cold spots are the consequence of these sound waves. The sizes of these spots depend on things like the speed of sound or the speed that sound propagated at in the early universe and this depends on things like the temperature and pressure at the time. By studying the acoustic patterns in the CMB we can measure the speed of sound in the early universe – telling us how many protons there were in space - the more protons there were the more they will affect the speed of sound at these early times. We can measure things like the total density, the total amount of matter in the early universe, leading us to a measure of how much dark energy is present in our universe and the large scale geometry or curvature of our universe.

See the Why This Universe on Youtube here

Also read about Baryonic Acoustic Oscillations (BAO) below: