Astronomers find source of Milky Way's unusual microwave light emissions

Anomalous Microwave Emission (AME) was first detected in the Milky Way two decades ago. Initially, polycyclic aromatic hydrocarbons (PAHs) were suspected to cause AME, but not all PAH-rich systems exhibited this glow. Recent research using the Green Bank Telescope and the Australia Telescope Compact Array identified AME in three young star systems surrounded by diamond dust. The emission is thought to arise from rapidly spinning nanodiamonds, which create a dipole moment and emit microwave radiation.

What were the first observations of AME in the Milky Way related to?

What was initially thought to be responsible for the AME glow?

What did the new study using the Green Bank Telescope and the Australia Telescope Compact Array discover?

What is believed to be the source of the light emitted from the nanodiamond particles?

In what range is the electromagnetic radiation emitted by the nanodiamond particles?