The images linked below show the dark matter density field in a variety of N-body simulations. Their names refer to those listed in Diemer & Kravtsov 2015. Specifically, the simulations labeled L0063 to L2000 refer to a series of LCDM simulations with increasing box size, using the WMAP7 cosmology of Komatsu et al. 2011 (Ωm = 0.27, ΩΛ = 1 – Ωm, Ωb = 0.0469, H0 = 70, σ8 = 0.82, and ns = 0.95). The simulations labeled “n=-1” to “n=-2.5” refer to a series of four self-similar, Einstein-de Sitter universes with a power-law initial power spectrum of slope n. Although not realistic, such universes bracket the behavior of LCDM cosmologies and highlight the importance of the power spectrum.

All images were created using Phil Mansfield’s visualization code gotetra. This algorithm is based on the tetrahedron method laid out in Kaehler et al. 2012 (see also Abel et al. 2012, Hahn et al. 2013, 2015). Gotetra creates a 3D density field which is then projected through a particular slab. Brighter colors indicate higher dark matter density. The time series visualizations below were created by replicating the periodic box multiple times, associating the x-coordinate with a cosmic time between the beginning and end of the simulation, and interpolating between snapshots.

Feel free to use the images below in publications or presentations, but please acknowledge Mansfield & Diemer as the authors. Even higher-resolution versions of some of the images are available upon request.

The cosmic web, different zoom levels
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L2000
2000 Mpc/h
160 Mpc/h
Z
1000 Mpc/h		2000px, blue
4000px, blue		Slice_L2000
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L0500
500 Mpc/h
40 Mpc/h
Z
250 Mpc/h		2000px, blue
4000px, blue		Slice_L0500
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L0250
250 Mpc/h
25 Mpc/h
Z
125 Mpc/h		2000px, blue
2000px, red		Slice_L0250
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L0125
125 Mpc/h
12.5 Mpc/h
Z
62.5 Mpc/h		2000px, blue
2000px, red
2000px, black & white
4000px, red
4000px, black & white		Slice_L0125
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L0063
62.5 Mpc/h
5 Mpc/h
Z
31.25 Mpc/h		2000px, blue
2000px, red
2000px, black & white
4000px, blue		Slice_L0063
The cosmic web in self-similar cosmologies
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		n=-1
100 Mpc/h
8 Mpc/h
Z
50 Mpc/h		2000px, blue
4000px, blue		Slice_ss10
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		n=-1.5
100 Mpc/h
8 Mpc/h
Z
50 Mpc/h		2000px, blue
4000px, blue		Slice_ss15
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		n=-2
100 Mpc/h
8 Mpc/h
Z
50 Mpc/h		2000px, blue
4000px, blue		Slice_ss20
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		n=-2.5
100 Mpc/h
8 Mpc/h
Z
50 Mpc/h		2000px, blue
4000px, blue		Slice_ss25
Time series
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L2000
2000 Mpc/h
160 Mpc/h
Z
1000 Mpc/h		6000x2000, blue
6000x2000, red		Slice_L0063
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L0500
500 Mpc/h
40 Mpc/h
Z
250 Mpc/h		6000x2000, blue
6000x2000, red		Slice_L0125
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L0250
250 Mpc/h
25 Mpc/h
Z
125 Mpc/h		6000x2000, blue
6000x2000, red		Slice_L0250
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L0125
125 Mpc/h
12.5 Mpc/h
Z
62.5 Mpc/h		6000x2000, blue
6000x2000, red		Slice_L0500
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		L0063
62.5 Mpc/h
5 Mpc/h
Z
31.25 Mpc/h		6000x2000, blue
6000x2000, red		Slice_L2000
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		n=-1
100 Mpc/h
8 Mpc/h
Z
50 Mpc/h		6000x2000, blue
6000x2000, red		css10_l0100
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		n=-1.5
100 Mpc/h
8 Mpc/h
Z
50 Mpc/h		6000x2000, blue
6000x2000, red		css15_l0100
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		n=-2
100 Mpc/h
8 Mpc/h
Z
50 Mpc/h		6000x2000, blue
6000x2000, red		css20_l0100
Simulation:
Box size:
Projection Depth:
Projection Direction:
Projection Coordinate:		n=-2.5
100 Mpc/h
8 Mpc/h
Z
50 Mpc/h		6000x2000, blue
6000x2000, red		css25_l0100
Individual Halos (shallow projection)
Simulation:
Halo ID:
Box size:
Projection Depth:
Projection Direction:
Halo mass Mvir:		L0063
168021665
15 Mpc/h
6 Mpc/h
Z
1.4x1014 Msun/h		2000px, blue
2000px, red
4000px, red		Halo_L0063_s100_168021665_z_w15.0_t6.0_afmhot
Simulation:
Halo ID:
Box size:
Projection Depth:
Projection Direction:
Halo mass Mvir:		L0063
168089956
15 Mpc/h
5 Mpc/h
Z
2.2x1014 Msun /h		2000px, blue
2000px, red		Halo_L0063_s100_168089956_z_w15.0_t5.0_afmhot
Simulation:
Halo ID:
Box size:
Projection Depth:
Projection Direction:
Halo mass Mvir:		L0063
168357218
15 Mpc/h
5 Mpc/h
X
3.2x1014 Msun/h		2000px, blue
2000px, red		Halo_L0063_s100_168357218_x_w15.0_t5.0_afmhot
Simulation:
Halo ID:
Box size:
Projection Depth:
Projection Direction:
Halo mass Mvir:		L0063
169607412
15 Mpc/h
5 Mpc/h
Y
5.9x1013 Msun/h		2000px, blue
2000px, red		Halo_L0063_s100_169607412_y_w15.0_t5.0_afmhot
Simulation:
Halo ID:
Box size:
Projection Depth:
Projection Direction:
Halo mass Mvir:		L0063
169074096
15 Mpc/h
5 Mpc/h
Z
5.7x1013 Msun/h		2000px, blue
2000px, red		Halo_L0063_s100_169074096_z_w15.0_t5.0_afmhot
Individual Halos (deep projection)
Simulation:
Halo ID:
Box size:
Projection Depth:
Projection Direction:
Halo mass Mvir:		L0063
168089956
15 Mpc/h
15 Mpc/h
Z
2.2x1014 Msun/h		2000px, red
Simulation:
Halo ID:
Box size:
Projection Depth:
Projection Direction:
Halo mass Mvir:		L0063
168357218
15 Mpc/h
15 Mpc/h
Z
3.2x1014 Msun/h		2000px, red
Simulation:
Halo ID:
Box size:
Projection Depth:
Projection Direction:
Halo mass Mvir:		L0063
169056549
15 Mpc/h
15 Mpc/h
Y
9.3x1013 Msun/h		2000px, red