NumCosmoDataPlanckPlikLite

Planck plik_lite (CMB-marginalized, foreground-free) high-$\ell$ likelihood.

Native reimplementation of the Planck plik_cmbonly likelihood as an NcmDataGaussCov subclass. The data are binned cross-spectra bandpowers (raw $C_\ell$, in $\mu K^2$) with a fixed covariance; the model bandpower for each bin is the normalized weighted average of the theory $C_\ell$ over the bin, divided by the absolute calibration $A_\mathrm{planck}^2$. Being a NcmDataGaussCov, it supports resampling (unlike the clik wrapper).

Bin operator (per active bin $b$, absolute multipole range $[\ell^{\min}b, \ell^{\max}_b]$ with weights summing to one): $$ X^{\rm model}_b = \frac{1}{A\mathrm{planck}^2} \sum_{\ell=\ell^{\min}b}^{\ell^{\max}_b} w{b,\ell}\, C_\ell^{s(b)}, $$ where $s(b) \in {TT, EE, TE}$ is the bin’s spectrum.