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Power spectrum tests
David Alonso edited this page Jan 30, 2017
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100 simulations with:
- N_grid=1536
- z_max=1.1 (Lbox=4962.7)
- R_smooth=5 Mpc/h
- ~7 million objects with positions, redshifts and ellipticities
- Added Gaussian photo-z to sources with \sigma_z=0.03
- Sample divided into two overlapping redshift bins (see above).
- Interpolated sources to Nside=128 maps to create maps of the galaxy overdensity and cosmic shear (E and B modes).
- Computed all (galaxy-galaxy, galaxy-lensing and lensing-lensing) full-sky power spectra with NaMaster for each simulation and pair of bins.
- Averaged power spectra over all simulations.
- Estimated theoretical power spectra with LimberJack, accounting for lognormal transformation, and using non-Limber for l<100.
- The theory must be corrected (analytically) for several smoothing effects:
- Simulation resolution.
- Interpolation into spherical shells.
- HealPix resolution.
- Compared theory and simulations.
- Accounting for lognormal transformation.
- Accounting for interpolation into spherical shells.
- Shot-noise correction.