a small part of the via lactea halo

high resolution Milky Way dark matter halos simulated on NASA's Columbia and ORNL's Jaguar supercomputers



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VL-2 images :

The following images are different versions of Figure 1 in Diemand et al. 2008:

Fig 1 Fig 1 density Fig 1 bone Fig 1 inset
projected DM density squared:
2048x2048 px: .png   .jpeg
1024x1024 px: .png   .jpeg
 local DM density (800 kpc cube):
2048x2048 px: .png   .jpeg
1024x1024 px: .png   .jpeg
 local DM density, no insets:
2048x2048 px: .png   .jpeg
1024x1024 px: .png   .jpeg
 different version of the inset (40 kpc cube)
colored by local phase space density
lines show velocities: .png   .jpeg

VL-1 images :  z=0   low resolution,z=0   z=0.3   z=0.8  z=2.0   z=3.7  z=6.2   z=10.6  composites   sub-subhalos

Projected dark matter density-square maps of the simulated Milky Way-size halo Via Lactea-1 at the various epochs. The logarithmic color scale covers the same 24 decades in projected density-square in physical units in each panel. Most images are 1024x768 pixels (composites are larger) and they are available as full quality PNG version and as smaller, compressed version in JPEG format.

at z=0, i.e. today
800kpcZ=0 400kpcZ=0 80kpcZ=0
800x600 physical kpc : .png   .jpeg
extra large png (2560x1920px) 		400x300 physical kpc : .png   .jpeg 80x60 physical kpc : .png   .jpeg


low resolution simulation (27 times fewer particles) also at z=0, for comparison
800kpcZ=0 400kpcZ=0 80kpcZ=0
800x600 physical kpc : .png   .jpeg 400x300 physical kpc : .png   .jpeg 80x60 physical kpc : .png   .jpeg


at z=0.31, 3.4 billion years ago
800kpcZ=0 400kpcZ=0 80kpcZ=0
800x600 physical kpc : .png   .jpeg 400x300 physical kpc : .png   .jpeg 80x60 physical kpc : .png   .jpeg


at z=0.82, 6.8 billion years ago
800kpcZ=0 400kpcZ=0 80kpcZ=0
800x600 physical kpc : .png   .jpeg 400x300 physical kpc : .png   .jpeg 80x60 physical kpc : .png   .jpeg


at z=2.0, 10.3 billion years ago, 3.5 billion years after the Big Bang
800kpcZ=0 400kpcZ=0 80kpcZ=0
800x600 physical kpc : .png   .jpeg 400x300 physical kpc : .png   .jpeg 80x60 physical kpc : .png   .jpeg


at z=3.7, 12.0 billion years ago, 1.8 billion years after the Big Bang
800kpcZ=0 400kpcZ=0 80kpcZ=0
800x600 physical kpc : .png   .jpeg 400x300 physical kpc : .png   .jpeg 80x60 physical kpc : .png   .jpeg


at z=6.2, 12.8 billion years ago, 940 million years after the Big Bang
800kpcZ=0 400kpcZ=0 80kpcZ=0
800x600 physical kpc : .png   .jpeg 400x300 physical kpc : .png   .jpeg 80x60 physical kpc : .png   .jpeg


at z=10.6, 13.3 billion years ago, 460 million years after the Big Bang
80kpcZ=0
80x60 physical kpc : .png   .jpeg


composite images: same physical volume at six different redshifts
800kpcZ=0 400kpcZ=0 80kpcZ=0
800x600 physical kpc : .png   .jpeg 400x300 physical kpc : .png   .jpeg 80x60 physical kpc : .png   .jpeg


sub-subhalos at z=0
Projected dark matter density-square maps of the four most massive subhalos within the simulated Milky Way host at the present epoch. Sub-substructure is clearly visible. On the left, only dark matter particles within the tidal radius are used for the projections. On the right, dark matter particles within a cube enclosing the tidal radius are used. See astro-ph/0611370 for details.
susubsZ=0 susubsZ=0
.png   .jpeg .png   .jpeg


last updated: August 6, 2008, by J. Diemand
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