Astrophysics (Index)About

non-thermal emission

(non-thermal radiation)
(EMR not due to a body's heat)

Non-thermal emission is electromagnetic radiation emission not due to the heat (temperature) of the source (e.g., an astronomical object), i.e., other than thermal emission. The term is sometimes meant to include radiation that has been modified such that it no longer has the spectral energy distribution associated with thermal radiation. Emission lines are not considered non-thermal. Non-thermal radiation is generally recognized through spectral features that suggest something other than the black-body radiation. There are a number of non-thermal emission mechanisms, among them:

Further reading:

Referenced by pages:
black hole shadow