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 [CAMB Jan 2017] Individual contribution outputs (OSW)
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Luke Hart

Joined: 13 Jul 2015
Posts: 37
Affiliation: University of Manchester

 Posted: July 26 2017 Dear Antony and co, Firstly, I'd just like to say thanks for the availability of the ISW and Doppler components of the CMB spectrum individually made available via the outputs routine in equations.f90. My question however is how do we isolate the OSW effect specifically. We can isolate the ISW (even the early and late components) however, isolating the gravitational redshift component is proving difficult, maybe due to the formalism within equations.f90? I'm not sure? Any help would be awesome thanks Luke
Antony Lewis

Joined: 23 Sep 2004
Posts: 1351
Affiliation: University of Sussex

 Posted: July 26 2017 How do you define OSW? You can try the scal_eqs branch, which makes it easy to get different terms from python. e.g. see the plots in the sample notebook at http://nbviewer.jupyter.org/github/cmbant/CAMB/blob/scal_eqs/pycamb/docs/ScalEqs.ipynb
Luke Hart

Joined: 13 Jul 2015
Posts: 37
Affiliation: University of Manchester

 Posted: August 01 2017 I'm referencing the evaluation of the Θl components in the CMB spectrum. So I may have got this wrong but when I check the Dodelson, I've found the first component of $\Theta_l(k,\eta_0)=\int^{\eta_0}_0d\eta g(\eta) \left[\Theta_0(k,\eta)+\Psi(k,\eta)\right]\,j_l$ with the Bessel weighting. I'm trying to isolate this term in an effort to recreate the figure from one of Anthony Challinor's lecture courses where he isolates each component of the CMB spectra. It seems a bit difficult to isolate this component in the outputs module of equations.f90 Thanks Antony Luke
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