On the use of nonrelativistic bremsstrahlung cross sections in astrophysics
Received 27 February 1997 / Accepted 28 February 1997
The nonrelativistic Bethe-Heitler cross section for bremsstrahlung often used in astrophysical applications is a poor approximation at initial electron energies above 30 keV. Therefore a simple formula is given which is accurate up to semirelativistic energies. An extension of this expression can be applied in the whole energy range.
Key words: radiation mechanisms: non-thermal
© European Southern Observatory (ESO) 1997
Online publication: April 20, 1998