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nanograv / PINT

PINT is not TEMPO3 -- Software for high-precision pulsar timing
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Chromatic delay models #1661

Open abhisrkckl opened 1 year ago

abhisrkckl commented 1 year ago

PINT should have variable-index chromatic delay models

  1. Taylor series representation (like DispersionDM) - #1616
  2. Piecewise representation (like DMX) - #1777
  3. Fourier series representation (like DMWaveX) - #1802
  4. Fourier GP representation (like PLDMNoise) - #1797
  5. Chromatic events (e.g. for J1713+0747)
abhisrkckl commented 5 months ago

The chromatic exponential dip parameters for J1713+0747 look like this:

EXPEP_1        54764.272428904194001       
EXPEP_2        57500.886666587524999       
EXPPH_1        1.6641670367524487e-06      
EXPPH_2        2.1964077367938582999e-06   
EXPTAU_1       112.00425959054773          
EXPTAU_2       26.57155879530331           
EXPINDEX_1     -1.9148109887274356         
EXPINDEX_2     -1.5060816448307765999
abhisrkckl commented 5 months ago

The chromatic noise parameters look like this:

TNChromAmp -12.9681
TNChromGam 1.36311
TNChromIdx 4
TNChromC 40
abhisrkckl commented 5 months ago

TNChromIdx is already part of ChromaticCM.