GenISW: Simulated Integrated Sachs-Wolfe Maps

Maps of the Integrated Sachs-Wolfe and ancillary data are provided for the following N-body simulations: MICE Grand Challenge Lightcone Simulation <strong>File Structure</strong> <em>MICE_ISW_map_zmin_0.0_zmax_1.4_SBT_normal_nside_256.fits</em><br> Main ISW map for MICE in healpix format at nside=256 for constributions from z = 0 to 1.4 constructed from normal boundary spherical Bessel transforms. <em>MICE_alm_zmin_0.0_zmax_1.4_SBT_normal.txt</em><br> Alms for the above, to generate maps at the desired nside <em>MICE_Full.zip</em><br> ISW maps, alms and theory cls for MICE ISW for contribution from z = 0 to 1.4 <em>MICE_dz_02.zip</em><br> Same as above except these are divided into redshift bins of dz=0.2 <strong>Methods</strong> Spherical Bessel Transform with normal and derivative boundary conditions. Spherical Harmonic Scaling. Francis &amp; Peacock (2010) approximation. <strong>Data Products</strong> ISW maps in healpix format at nside=256 in units of K. ISW alms in units of K provided in ascii format Columns: real, imaginary. To generate HEALPix map with the desired nside: <pre><code class="language-python">import numpy as np import healpy as hp alm_fname = #provide name to alm file nside = #provide desired nside for map data = np.loadtxt(alm_fname, unpack=True) alm = data[0] + 1j*data[1] isw_map = hp.alm2map(alm, nside)</code></pre> Theoretical angular power spectra (Cls, which are provided unitless) with columns: l: spherical harmonic l modes. cl_ii: ISW auto-angular power spectra. cl_id: ISW-density cross-angular power spectra. cl_dd: Density auto-angular power spectra. cl_ii_limber: ISW auto-angular power spectra using the limber approximation. cl_id_limber`: ISW-density cross-angular power spectra using the limber approximation. cl_dd_limber: Density auto-angular power spectra using the limber approximation. Note: ISW maps and alms have already been multiplied by Tcmb = 2.7255. <strong>Citing</strong> Please cite the DOI for the zenodo repository. <strong>Contact</strong> Email: [e-mail]