HSC Lensing Web Page


In this page, we publish weak lensing simulation data for HSC and explain details of the data.
Convergence(shear) map, convergence power spectrum, two point correlation function(2pcf) of cosmic shear and halo catalogue are now released.
Please read
here about the details of our simulations (e.g. cosmological parameter). We have released two results. One is the result used in our paper. The other is the result which change the position of lens plane. It is to be sure that the result of changing the position of lens plane gives a more correct result than the result used in our paper, although we have not explain the details. Therefore, we recommend the use of the result of changing the position of lens plane. However, qualitative result is not changed in two cases. The form of kappa(shear) map, convergence power spectrum, 2pcf of cosmic shear data file is 'xxx.z??.dat'. These are the data on each source redshift. Correspondence relation are following.
z13→zs(source redshift)=0.6, z17→zs=0.8, z20→zs=1.0, z27→zs=1.5, z32→zs=2.0, z40→zs=3.0.

kappa(shear) map

The data is here.
Sample code reading kappa(shear) map are available on fortran and C.
The data is divided by source redshift. This is a big data which has 5GB on each file. Each file include 100 realization data. If you extract rea?_v2.z??.tar.gz, you have a directory of rea?_v2.z?? and you can see run??.z??.dat files. These are fortran binary files, and the data format is kappa(2048,2048), shear1(2048,2048), shear2(2048,2048), rotation(2048,2048).
Now, number of light ray is 2048^2. Therefore, each data is array of 2048*2048.

The data used by paper is here.
We have compiled six source redshift data every 100 realizations.

convergence power spectrum

The data is here.
If you extract power_v2.tar.gz, you have a directory of power_v2.z??. We have compiled convergence power spectrum every redshift. In a power_v2.z?? directory, you will see files such as power???.z??.dat which is convergence power spectrum on each realization. Column 1 is multipole l and column 2 is P_kappa.

The data used by paper is here.

2pcf of cosmic shear

The data is here.
If you extract tpcf_v2.tar.gz, you have a directory of tpcf_v2.z??. We have compiled 2pcf of cosmic shear every redshift. In a tpcf_v2.z?? directory, you will see files such as tpcf???.z??.dat which is 2pcf of cosmic shear on each realization. The contents of tpcf???.z??.dat is as follows.
column 1: separation angle theta[arcmin]
column 2: 2pcf of convergence field
column 3: 2pcf of tangential shear
column 4: 2pcf of cross-component shear
column 5: 2pcf for plus mode
column 6: number of pair of galaxies

The data used by paper is here.

halo catalogue

This is a halo catalogue within light-cone of ray-tracing simulations. Halos are identified by using a friends-of-friends (FOF) method. We publish ASCII data and binary data which are of course same data.
The contents of halodata???.dat and run??.halo are as follows.
column 1: lens plane number where halo exists
column 2: halo id
column 3: halo mass(Msun/h)
column 4: redshift of halo
column 5: x coordinate of halo
column 6: y coordinate of halo
column 7: z coordinate of halo
Note that we have choose [2048,2048] grid for x,y coordinate. z coordinate is comoving Mpc/h.

The ASCII data used by paper is here.
The binary data used by paper is here.

Reference to our simulation data - publishing

If you use our simulation data and publish some results, please refer to usage for our simulation data and cite the paper.
If you have some trouble, please feel free to contact me.