3DEX: Fast Fourier-Bessel Decomposition of Spherical 3D Surveys

Details 3DEX: Fast Fourier-Bessel Decomposition of Spherical 3D Surveys 3DEX: Fast Fourier-Bessel Decomposition of Spherical 3D Surveys

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ascl.soft11011l&link_type=abstract

Astrophysics Source Code Library, record ascl:1111.011

Astronomy and Astrophysics

Astrophysics

Scientific paper

High precision cosmology requires analysis of large scale surveys in 3D spherical coordinates, i.e. Fourier-Bessel decomposition. Current methods are insufficient for future data-sets from wide-field cosmology surveys. 3DEX (3D EXpansions) is a public code for fast Fourier-Bessel decomposition of 3D all-sky surveys which takes advantage of HEALPix for the calculation of tangential modes. For surveys with millions of galaxies, computation time is reduced by a factor 4-12 depending on the desired scales and accuracy. The formulation is also suitable for pre-calculations and external storage of the spherical harmonics, which allows for further speed improvements. The 3DEX code can accommodate data with masked regions of missing data. It can be applied not only to cosmological data, but also to 3D data in spherical coordinates in other scientific fields.

Affiliated with

Also associated with

No associations

Rating

3DEX: Fast Fourier-Bessel Decomposition of Spherical 3D Surveys does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with 3DEX: Fast Fourier-Bessel Decomposition of Spherical 3D Surveys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3DEX: Fast Fourier-Bessel Decomposition of Spherical 3D Surveys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1054823