4.1.3. Bb: blackbody model¶
The surface energy flux of a blackbody emitter is given by
(Chapter 1 of Rybicki & Lightman 1986). We transform this into a spectrum with energy units (conversion from Hz to keV) and obtain for the total photon flux:
where now is the photon energy in keV, the temperature in keV and is the elementary charge in Coulomb. Inserting numerical values and multiplying by the emitting area , we get
where N(E) is the photon spectrum in units of photons/s/keV and the emitting area in .
The parameters of the model are:
norm: Normalisation (the emitting area, in units of . Default value: 1.
t: The temperature in keV. Default value: 1 keV.
Recommended citation: Kirchhoff (1860).