athena: Tree code for second-order correlation functions
Abstract
athena is a 2d-tree code that estimates second-order correlation functions from input galaxy catalogues. These include shear-shear correlations (cosmic shear), position-shear (galaxy-galaxy lensing) and position-position (spatial angular correlation). Written in C, it includes a power-spectrum estimator implemented in Python; this script also calculates the aperture-mass dispersion. A test data set is available.
- Publication:
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Astrophysics Source Code Library
- Pub Date:
- February 2014
- Bibcode:
- 2014ascl.soft02026K
- Keywords:
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- Software