Hi, I don't quite understand which are the fundamental processes for production of photons that are emitted by a "black body". Usually this is explained by considering a cavity in thermodynamic equilibrium but I am not interested in this. I am looking for a more practical description of this phenomena. I would for example like to know if this includes processes like light scattering, bremsstrahlung, cyclotron radiation,... For example the Sun spectra is known to be close to black body spectra. But how are the photons emitted by the Sun actually produced? Thanks!