A new cosmic shear function:
Optimised E-/B-mode decomposition on a finite interval

Liping Fu, Martin Kilbinger, 2009, arXiv:0907.0795


We have introduced a new cosmic shear statistic which decomposes the shear correlation into E- and B-modes on a finite angular interval. The new function is calculated by integrating the shear two-point correlation function with a filter function. The filter function fulfills the E-/B-mode decomposition constraints given in Schneider & Kilbinger (2007).

The code

Download the tar file decomp.tgz. Extract the archive with
tar xzf decomp.tgz

To compile and run the code:
cd Demo
make links
make decomp_eb

The package fftw3 has to be installed. If it is not in a standard directory, fftw3.h is looked for in $(FFTW)/include and libfftw3.a in $(FFTW)/lib. Change the variable `FFTW' in the Makefile accordingly. You can download fftw3 from http://www.fftw.org.

The program produces two files, Tpm containing the filter functions T+ and T-, and REB containing the shear functions RE and RB.

The authors

Liping Fu (fu@oacn.inaf.it)
Martin Kilbinger (kilbinger@iap.fr)

Last updated 6 July 2009.