The RayGalGroupSims suite consists of a set of N-body simulations of different cosmological models, which have been specifically designed to generate high resolution halo catalogs in redshift-space (light-cone) taking into account for all observable relativistic effects to first order in the weak field approximation.

We have also computed high precision field quantities (power spectra, density maps , etc.) and halo quantities (various properties and profiles for several definitions) in several snapshots at a given redshift (no relativistic effect). These snapshot data are provided below.

To date we have realized two runs for LCDM and WCDM scenarios with parameters set to the WMAP-7 best-fit cosmological model (and within the Planck 2σ level contours). The simulations cover a (2625 Mpc/h)³ volume with N_p=4096³ particles (the mass resolution is about 1.88·10¹⁰ M_sun/h in LCDM and 2.01·10¹⁰ M_sun/h in wCDM).

We provide here snapshot data (i.e. at a given time).

_{If you are interested in light-cone data you can go there.}

Cosmology

Information about RayGal cosmology can be found here.

Snapshot expansion factors and unit conversion [format: explicit ASCII files]

RAMSES info file LCDM

RAMSES info file wCDM

Power spectra [ format: k (h/Mpc) P (Mpc/h)³ ]

Power spectra LCDM

Power spectra wCDM

Remark: a conservative choice is to drop the values between max(k) and max(k)/2 to make sure the power spectrum is not polluted by aliasing effects.

Density field

zstart

3.0

2.3

2.0

1.5

1.0

0.67

0.50

0.43

0.25

0.11

0

LCDM

link

link

link

link

link

link

link

link

link

link

link

link

WCDM

link

link

link

link

link

link

link

link

link

link

link

link

Halos properties (including profiles)

Friend-of-friend halos LCDM

b \ z	3.0	2.3	2.0	1.5	1.0	0.67	0.50	0.43	0.25	0.11	0
0.0500	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.0630	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.0794	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.1000	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.1260	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.1587	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.2000	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.2520	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.3175	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.4000	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p

Friend-of-friend halos wCDM

b \ z	3.0	2.3	2.0	1.5	1.0	0.67	0.50	0.43	0.25	0.11	0
0.0500	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.0630	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.0794	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.1000	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.1260	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.1587	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.2000	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.2520	hfp/p		hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.3175	hfp/p		hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
0.4000	hfp/p		hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p

Spherical Overdensity halos LCDM

Δ \ z	3.0	2.3	2.0	1.5	1.0	0.67	0.50	0.43	0.25	0.11	0
50m	hfp	hfp	hfp	hfp
100m	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
200m	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
400m	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp	hfp/p	hfp/p
800m	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
1600m	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
3200m	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
6400m	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
12800m	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
200c	hfp	hfp	hfp	hfp	hfp	hfp	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
500c	hfp	hfp	hfp	hfp	hfp	hfp	hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
2500c	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p
Δvir	hfp	hfp	hfp	hfp			hfp/p	hfp/p	hfp/p	hfp/p	hfp/p

Spherical Overdensity halos wCDM (transfer in progress)

Non parametric halo profile (i.e. sparsity) in LCDM and wCDM

[format: explicit ASCII files]

Quick access to some mass and sparsities (ie mass profile)

Halo particles, snapshot particles, snapshot AMR cells

Too large, please contact us.

Publications

Some publications using RayGal data

Known issues

Known issues

RayGal team

RayGal team

Acknowledgements

If you use these data, we kindly ask you to cite the two following papers: Breton et al. 2019 (link); Rasera et al., 2021(link) .

_{We acknowledge financial support from the DIM ACAV of the Région Île-de-France, the Action fédératriceee Cosmologie et structuration de l’univers as well as the JSPS Grant L16519. This work was granted access to HPC resources of TGCC/CINES through allocations made by GENCI Grand Equipement National de Calcul Intensif under the allocations 2016-042287, 2017-A0010402287, 2018-A0030402287, 2019-A0050402287 and 2020-A0070402287. AT acknowledges the support from MEXT/JSPS KAKENHI Grant Nos. JP17H06359, JP20H05861, JP21H01081, and JST AIP Acceleration Research Grant No. JP20317829, Japan. We thank Enea Di Dio for pointing out the “hidden” Class options to tune, S. Prunet for help on MPGRAFIC and Polspice, R. Teyssier for help on Ramses, B. Li for sharing his TSC routine, C. Murray for useful comments on the catalogues, J. Adamek for tips about Healpix. We also thank J.-M. Alimi, S. Colombi, I. Achitouv and A.Le Brun for fruitful discussions. We deeply thank Stéphane Mene for tremendeous efforts in making the local servers working at LUTH}