Beyond-2pt blind data challenge
This data challenge for analyses of galaxy redshift surveys consists of galaxy mock catalogs constructed from N-body halo catalogs using HOD-based galaxy assignments. The simulated galaxy catalogs are available in three different coordinate systems with increasing analysis complexity:
Flat $\Lambda$CDM catalogs
Real-space snapshot (mock_lcdm_real-space_**.h5)
Real-space galaxy coordinates from a 8,0 (Gpc/h)^3 snapshot at z=1.0 with periodic boundary conditions (box length = 2000.0 Mpc/h). For each galaxy, the file contains coordinates x,y,z in Mpc/h with the box center at (1000,1000,1000). The galaxy number density is ~ 4.5e-4 (Mpc/h)^{-3}.
Redshift-space snapshot (mock_lcdm_redshift-space_*.h5)
Redshift-space galaxy coordinates for a line-of-sight along the z coordinate axis with redshift space distortions calculated in the plane-parallel approximation from a 8.0 (Gpc/h)^3 snapshot at z=1.0 with periodic boundary conditions (box length = 2000.0 Mpc/h). For each galaxy, the file contains x,y,z_los in Mpc/h with the box center at (1000,1000,1000). The galaxy number density is ~ 4.5e-4 (Mpc/h)^{-3}.
Light cone (mock_lcdm_lightcone.h5)
Angular coordinates RA,DEC and redshift Z_red for a galaxy sample in the redshift range [0.8,1.3]. The survey footprint is 0.0◦ < RA < 90.0◦ and -46◦ < DEC < 0◦, with uniform coverage across the redshift range. The galaxy number density at z = 1 is ~ 4.5e-4 (Mpc/h)^-3.
Flat $w$CDM catalogs
Real-space snapshot (A_mock_real-space.h5)
Real-space galaxy coordinates from a ~1.3 (Gpc/h)^3 snapshot at z=1.0 with periodic boundary conditions (box length = 1100.0 Mpc/h). For each galaxy, the file contains coordinates x,y,z in Mpc/h with the box center at (550,550,550). The galaxy number density is ~ 4e-4 (Mpc/h)^{-3}.
Redshift space snapshot (B_mock_redshift-space.h5)
Redshift-space galaxy coordinates for a line-of-sight along the z coordinate axis with redshift space distortions calculated in the plane-parallel approximation from a ~1.3 (Gpc/h)^3 snapshot at z=1.0 with periodic boundary conditions (box length = 1100.0 Mpc/h). For each galaxy, the file contains x,y,z_los in Mpc/h with the box center at (550,550,550). The galaxy number density is ~ 5.5e-4 (Mpc/h)^{-3}.
Light cone (C_mock_lightcone.h5)
Angular coordinates RA,DEC and redshift Z_red for a galaxy sample in the redshift range [0.8,1.3]. The survey footprint is 0.0◦ < RA < 90.0◦ and -46◦ < DEC < 0◦, with uniform coverage across the redshift range. The galaxy number density at z = 1 is ~ 5e-4 (Mpc/h)^-3.
Large real-space snapshot (D_mock_real-space_large.h5)
Real-space galaxy coordinates from a 8.0 (Gpc/h)^3 snapshot at z=1.025 with periodic boundary conditions (box length = 2000.0 Mpc/h). For each galaxy, the file contains coordinates x,y,z in Mpc/h with the box center at (1000,1000,1000). The galaxy number density is ~ 4.5e-4 (Mpc/h)^{-3}.
Large redshift space snapshot (E_mock_redshift-space_large.h5)
Redshift-space galaxy coordinates for a line-of-sight along the z coordinate axis with redshift space distortions calculated in the plane-parallel approximation from a 8.0 (Gpc/h)^3 snapshot at z=1.025 with periodic boundary conditions (box length = 2000.0 Mpc/h). For each galaxy, the file contains x,y,z_los in Mpc/h with the box center at (1000,1000,1000). The galaxy number density is ~ 5.7e-4 (Mpc/h)^{-3}.
Lower density real-space snapshot (F_mock_real-space.h5)
Real-space galaxy coordinates from a ~1.3 (Gpc/h)^3 snapshot at z=1.0 with periodic boundary conditions (box length = 1100.0 Mpc/h). For each galaxy, the file contains coordinates x,y,z in Mpc/h with the box center at (550,550,550). The galaxy number density is ~ 1e-4 (Mpc/h)^{-3}.
These catalogs are generated at five different flat wCDM cosmologies (Box A/F,B,C,D,E), so that e.g., an analysis of the real space catalog will not unblind the light cone data.
Issues and Questions
Please create an issue or email ansalcedo@arizona.edu, yosukekobayashi@arizona.edu, and krausee@arizona.edu with any questions or requests.