AIPS NRAO AIPS HELP file for MTARS in 31DEC22



As of Wed Jan 19 13:10:43 2022


MTARS: Generate model inputs for TARS

INPUTS

INTEXT
                                   Text file with frequencies
FLUX                               Noise level to add
INLIST
                                   List of sources up to 9999
OUTFILE
                                   Output text file

HELP SECTION

MTARS
Type: Task
Use:  MTARS will take models of source flux, rotation measure, and
      "RM thickness" and compute input files for TARS.
Adverbs:
  INTEXT.....Text file containing a sample input file for TARS or
             simply a list of frequencies (in Hz) one per line.
  FLUX.......Noise level to be added.
  OPTYPE.....
  INLIST.....Text file containing one line per source, giving all 5 of

             Q  U  Spix  RM  RMthick  Type

             blank separated free format.  The 6th value, type has a
             default of 1.  Q, and U are those that would be
             measured at 1 GHz wavelength.  The resulting number of
             components will be the number of lines in INLIST
             neglecting comments (which start with # or ; in column 1)
             and lines with format errors.  Units are Jy/beam,
             Jy/beam, unitless, radians/m^2, and radians/m^2.  The
             type are
             The thickness is applied with a function specified by:
             1. 'SLAB' - sin(x)/x         with x = beta * lambda^2
             2. 'GAUS' - exp(-f * x * x)  with f = ln(2) / (1.8954)^2
             3. 'EXP ' - exp(-f * abs(x)) with f = ln(2) / 1.8954
             (Note 1.8954 radians is the point where sin(x)/x = 0.5
             and beta is called RMthick below in radians/m/m)
  OUTFILE....Output text file suitable for input to tars

EXPLAIN SECTION


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