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            edge, zedge:  absorption edge

The edge model is absorption edge, given by.

M(E)=

1                                              E <= E_c

exp[-D*(E/E_c)^-3]                   E >= E_c

 

where:

 

par1=

threshold energy

par2

absorption depth at the threshold

The zedge model given by

M(E)=

1                                              E < Ec

exp(-D*[E(1+z)/E_c]^3)     E > Ec

allows a redshift z where:

par1 = Ec

threshold energy

par2= D

absorption depth at threshold

par3= z

redshift

 

next up previous contents
Next: Etable Up: Multiplicative Model Components Previous: Dust