4.1.4. 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).