In all seven independent simulations of a 200Mpc/h cubical box were run, each with 384^3 equal mass (~10^10Msun/h) dark matter particles. The force softening was of the spline form with a Plummer equivalent epsilon of 18kpc/h (constant in comoving coordinates). The full phase space distribution was dumped every 50Mpc/h along the line-of-sight. For each box 16 maps were produced by ray tracing with different orientations through the lightcone produced by the series of outputs.
All of the files are in FITS format and contain arrays of two shear components and convergences covering a 3x3 degree field of view. Each FITS file contains the data for one field in a 3xNxN array where N=1024 pixels.
The maps have been made for 4 source redshift distributions. For simplicity
we take p(z)~z^2 Exp[-(z/z0)^b] with b=1.5 or 1.0 and
For people interested in finding clusters, 3D group catalogues have been
produced.
The files contain the cluster information for each field.
Each group has 1 row and the columns are x and y pixel position for
the most bound particle in the group, M_{200} in Msun/h, comoving distance
in Mpc/h, line-of-sight velocity as a distance offset (also in Mpc/h),
redshift and FoF group mass.
Last modified Thu Sep 7 07:46:20 2006
To simplify downloads and file management, the maps for distribution 1 have
been grouped into (gzipped) tar files called shear.N.01.tgz where N=11-17.
Auxilliary data
Galaxy catalogues, containing angular and redshift position, convergence
and shear for a "realistic" source distribution, are available.
There are 7 entries per galaxy and roughly 200 galaxies per square
arcminute as explained in the FITS headers.
These galaxies are meant to be used for testing shot-noise or shear
assignment, the clustering properties are not terribly realistic.
Beware of array indexing conventions between C/Fortran/IDL etc.
You may need to transpose the maps to get correspondance with the files.
Index of Lensing/Thousand
Name Size (MB) Last modified checksum_24Aug06.dat 0 2006/08/24 groups.011.tgz 5 2006/09/07 groups.012.tgz 5 2006/09/07 shear.011.01.tgz 178 2004/11/18 shear.012.01.tgz 178 2004/11/18 shear.013.01.tgz 178 2004/11/18 shear.014.01.tgz 178 2004/11/18 shear.015.01.tgz 178 2004/11/18 shear.016.01.tgz 178 2004/11/18 shear.017.01.tgz 178 2004/11/18