On the Bremsstrahlung Efficiency of Nonthermal Hard X-Ray Source Models
Abstract
It has often been stated, but never rigorously proven, that interpreting observed hard X-ray emission in terms of a thick-target source gives a lower limit to the flux of electrons which have to be injected into the source. The truth of this statement, for theburst-integrated emission, is rigorously established here. Also an explicit inversion for the injected electron flux in terms of the photon spectrum is given, for the case where all electrons traverse a single value of column density. This generalises the previous results for the thick- and thin-target limits.
- Publication:
-
Solar Physics
- Pub Date:
- September 1989
- DOI:
- 10.1007/BF00912997
- Bibcode:
- 1989SoPh..122..303M
- Keywords:
-
- Bremsstrahlung;
- Nonthermal Radiation;
- Solar X-Rays;
- Radiation Sources;
- Stellar Models;
- Astrophysics;
- Lower Limit;
- Photon Flux;
- Source Model;
- Electron Flux;
- Column Density