*** 2d Fourier Transform of the Sunyaev-Zel'dovich Effect -Arnaud et al.- ***
December 11, 2010: E.Komatsu

Here we provide a program for computing a 2d Fourier transform of 
the Sunyaev-Zel'dovich (SZ) effect profile, Tsz(x), using Arnaud et al.'s 
model profile.

Ref: Arnaud et al., A&A, 517, 92 (2010)
     Komatsu et al., arXiv:1001.4538, Appendix D1 and Fig.17

The trasnformation is done via [see Eq.(2) of Komatsu&Seljak (2002)]

trasnform=(fourpi*r500)/ls^2*int_{xin}^{xout}[x^2*Tsz(x)*sin(l*x/l500)/(l*x/l500)]dx

- To compile and use the program, edit Makefile and simply "./make"
- It will generate executables called "compute_transform_arnaud"
- Running compute_transform_arnaud will generate the data file called 
"x_transform.txt", which contains:

1st: x
2nd: 2d Fourier transform of Tsz(x) in units of micro Kelvin [Rayleigh-Jeans],  
     where x=l/l500 [l500=da/r500]