Foreground transfer function #30
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…_model and dSdqb and make option for transfer function: 1/ from cmb signal, 2/ seperately from dust and cmb signal, 3/from (alpha*dust+cmb) signal
… for reading spectra from disk
* use separate seeds for each sim and component * clean up code to not rebuild existing files
* consistent foreground_type and foreground_type_transfer options for handling foreground components in covariance model and transfer function calculation * fix_fg_transfer option fixes transfer function to be the same as CMB, interpolated onto the foreground binning * beta_fit option enables or disables fitting for delta_beta in addition to foreground amplitudes * correct calculation of window functions for foreground bins
… separate_Fl_dust
cleanup to simplify later merging
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Forergound spectra have a correlation structure in ell space that is distinct from the CMB. This means that the XFaster-computed binned transfer function may differ between these two types of signal components.
This PR introduces
foreground_typeandforeground_transfer_typeoptions that behave analogously tosignal_typeandsignal_transfer_type, so that the foreground transfer function is computed from a separate ensemble of sims. In principle, this should improve the accuracy of the bandpower calculation with a harmonic-domain foreground component.However, there seems to be something fundamentally broken in the foreground code, such that the final covariance contains negative eigenvalues. This failure may not be specific to this branch.