We apply the Gabor transform methodology proposed in (Hansen et al. 2002, 2003) to the WMAP data in order to test the statistical properties of the CMB fluctuation field and specifically to evaluate the fundamental assumption of cosmological isotropy. In particular, we apply the transform with several apodisation scales, thus allowing the determination of… (More)

preprint (astro-ph/0310273) APPENDIX A: MONTE CARLO PRECALCULATIONS For a general Gabor window Gi as a function of pixel number i, one can write the pseudo spherical harmonic coefficients as ãlm

P. Vielva, E. Martinez-Gonzalez, B. Barreiro R, L. Sanz J, L. Cayon