The Accelerator Oscillator indicator was developed by Bill Williams in his book - ‘Profitunity (Chaos) Trading System’. The Accelerator Oscillator is built from the Awesome Oscillator - it is the difference between the Awesome Oscillator and its 5-Period Moving Average. This shows the delta, the acceleration of the Awesome Oscillator indicator.
This is a companion discussion topic for the original entry at https://www.optuma.com/kb/optuma/tools/averages/accelerator-oscillator