The power law model with galactic absorption will be applied to ROSAT data the extracted earlier The results will be stored in the _prd table in the current directory.
input files: rp90_obs.tab, rp90_soh.tab, rp_boh.tab
output file: rp90_prd.tab
NOTE: If an RDF SASS output file is used as input to fit (name of the form: rp<ROR#>_sp###.tab) then fit looks for an accompanying _oah###.tab source histogram file and runs without the background histogram.
NOTE: The rp_boh.tab file is not needed for the calculation of the fitted model. It is only used for the execution of fit.
xs> fit Performing the Simplex minimization fit. observed spectrum [root_obs.tab]: rp90 # will fit ROSAT data using # the default PSPC channels, 3:34. model descriptor or ? for help: abs(19:21)*pow(0.5:1.5) # IRAF will not # accept .5 as a valid fraction. Numbers <1 must be entered starting with # a zero, e.g., 0.5.