Optimised E-/B-mode decomposition on a finite interval

Liping Fu, Martin Kilbinger, 2009, arXiv:0907.0795

Description

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
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 R_{E} and
R_{B}.

The authors

Liping Fu (fu@oacn.inaf.it)

Martin Kilbinger (kilbinger@iap.fr)

Last updated 6 July 2009.