with the amplitude A and
the tabled cooling function 
.
rasm(1,2)
Note:The emissivity is calculated for ``cosmic'' abundances [Raymond and Smith1977]. If no special table is created the program uses the table exsas_cal:thbrte, which does work only for the ROSAT XRT telescope. A red shift cannot be given. Since this model is using tabled (interpolated) spectra (usually connected to the PSPC) it is recommended generally to use the model rsma or rsmf if one wants to calculate fluxes.