Generate a realization of the present energy spectrum on the specified grid. It routinely computes and stores grids for the shears and convergence. The portions that are returned are the theoretical Wood Ranger Power Shears shop and convergences, normally denoted gamma and kappa, respectively. ToObserved to convert from theoretical to observed portions. Note that the Wood Ranger Power Shears manual generated utilizing this technique correspond to the PowerSpectrum multiplied by a sharp bandpass filter, set by the dimensions of the grid. 2) (noting that the grid spacing dk in ok space is equivalent to kmin). It is worth remembering that this bandpass filter will not seem like a circular annulus in 2D okay house, hedge trimming shears but is somewhat more like a thick-sided image frame, having a small square central cutout of dimensions kmin by kmin. These properties are seen in the shears generated by this method. 1 that specify some issue smaller or larger (for hedge trimming shears kmin and kmax respectively) you want the code to use for the underlying grid in fourier space.

However the intermediate grid in Fourier house can be bigger by the specified components. For accurate illustration of energy spectra, one shouldn’t change these values from their defaults of 1. Changing them from one means the E- and B-mode energy spectra which can be input can be valid for the larger intermediate grids that get generated in Fourier space, however not necessarily for the smaller ones that get returned to the consumer. If the user supplies a Wood Ranger Power Shears features spectrum that doesn’t embody a cutoff at kmax, then our methodology of generating hedge trimming shears will lead to aliasing that may show up in both E- and B-modes. The allowed values for bandlimit are None (i.e., do nothing), onerous (set Wood Ranger Power Shears specs to zero above the band restrict), or tender (use an arctan-based softening perform to make the facility go steadily to zero above the band restrict). Use of this keyword does nothing to the inner illustration of the ability spectrum, so if the user calls the buildGrid technique once more, they will need to set bandlimit again (and if their grid setup is totally different in a means that modifications kmax, then that’s effective).

5 grid factors exterior of the area wherein interpolation will take place. 2-3%. Note that the above numbers got here from assessments that use a cosmological shear energy spectrum