Andrés Balaguera-Antolínez


Postdoctoral researcher
Instituto de Astrofisica de Canarias
cosmicatlas: cOSMOLOGICAL CATALOGS FOR LARGE SCALE STRUCTURE
UNDER CONSTRUCTION

H-GAPS: a HealPix based Galaxy Angular Power Spectrum code.
H-GAPS (written in C++) measures the cross-angular power spectrum of a galaxy (or galaxy cluster) catalog, provided the angular positions and a selection mask in Healpix format.
The code has been developed for the angular clustering analysis of the 2MPZ galaxy catalog. Access to the code is temporarily
done by direct request to balaguera at iac.es.
Main features:
Written in C++
* Parallelization with OMP
* Uses Healpix and GSL
* User friendly
Main inputs:
* Galaxy catalog (ascii file): the user specifies the columns
in which angular positions , redshift and other properties (e.g, luminosities) are written.
* Mask: a binary Healpix map indicating observed pixels.
* Random catalog, in case no mask is available, a random catalog with the same angular selection function of the real catalog can be used as mask.
Outputs:
* The cross and auto power spectrum (if redshifts are available)
* The mixing matrix, used to convolve a theoretical model in order to compare against theoretical predictions.
