Astrophysics (index)


(Breaking Radiation, Free-Free Radiation)
(photon emission when a charged particle is decelerated)

Bremsstrahlung (Braking Radiation) is Electromagnetic Radiation (EMR) produced when a charged particle decelerates, when its course is deflected by another charged particle. A photon is emitted that balances the energy equation. The resulting radiation Emission has a Continuous Spectrum (Continuum Emission), as opposed, for example, to Emission Lines. It is also called Free-Free Radiation in expressing the point that it is not from an electron bound to an atom.

An astronomical source of Bremsstrahlung is the Intracluster Medium (ICM) associated with a Galaxy Clusters (CL).

The reverse of Bremsstrahlung radiation is also possible, called Free-Free Absorption, where an electron and another particle interact and a photon is absorbed. Free-Free Absorption occurs in HII Regions (HII), affecting their spectrum.


Referenced by:
Continuum Emission
Kramers' Opacity Law
Synchrotron Radiation