Power Spectrum Shears
Antoinette Laporte edited this page 6 days ago


Generate a realization of the current energy spectrum on the desired grid. It mechanically computes and stores grids for Wood Ranger shears the shears and convergence. The quantities which can be returned are the theoretical Wood Ranger shears and convergences, Wood Ranger shears normally denoted gamma and kappa, respectively. ToObserved to transform from theoretical to noticed portions. Note that the shears generated utilizing this technique correspond to the PowerSpectrum multiplied by a sharp bandpass filter, Wood Ranger shears set by the dimensions of the grid. 2) (noting that the grid spacing dk in okay area is equal to kmin). It's worth remembering that this bandpass filter will not look like a circular annulus in 2D ok house, but is rather extra like a thick-sided picture body, having a small square central cutout of dimensions kmin by kmin. These properties are visible within the shears generated by this method. 1 that specify some factor smaller or larger (for kmin and kmax respectively) you need the code to use for the underlying grid in fourier house.


However the intermediate grid in Fourier house shall be larger by the required elements. For accurate illustration of power spectra, one should not change these values from their defaults of 1. Changing them from one means the E- and B-mode power spectra that are enter might be valid for the bigger intermediate grids that get generated in Fourier space, but not necessarily for the smaller ones that get returned to the user. If the person offers a Wood Ranger Power Shears sale spectrum that does not embody a cutoff at kmax, then our technique of generating shears will end in aliasing that will show up in each E- and B-modes. The allowed values for bandlimit are None (i.e., do nothing), arduous (set power to zero above the band limit), or mushy (use an arctan-based softening function to make the power go gradually to zero above the band restrict). Use of this keyword does nothing to the inner representation of the facility spectrum, so if the consumer calls the buildGrid methodology again, they might want to set bandlimit once more (and if their grid setup is totally different in a manner that modifications kmax, then that’s fine).


5 grid points outside of the region during which interpolation will happen. 2-3%. Note that the above numbers came from checks that use a cosmological shear power spectrum