Changes between Version 44 and Version 45 of u/bliu/pnfldiff
 Timestamp:
 08/21/18 15:45:55 (6 years ago)
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u/bliu/pnfldiff
v44 v45 31 31 $\frac{\partial n_{e}}{\partial t}=\Lambda\sigma n_{H}c I$ 32 32 33  $I$   33 or $\frac{\partial e}{\partial t}$ instead? 34 35  $I$  intensity, power units per unit area, per unit solid angle and per unit frequency bandwidth  34 36  $n_{e}$  electron number density  35 37  $n_{H}$  Comoving Hydrogen number density  36  $\lambda$  37  $\sigma$  photoionization cross section38  $\lambda$  limiter?  39  $\sigma$  StefanBoltzmann constant / radiation constant ? / photoionization cross section ?  38 40  $\alpha$   39  $c$  abundance of the specie41  $c$  light speed  40 42  $\Lambda$   41 43