Cosmology on a moving mesh
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Each halo is shown from three orthogonal views with three types of visualizations:

The first image shows projected log density on the left and log temperature on the right (white is hot, black is cold), along each of three orthogonal axes. The projection uses the SPH kernel to estimate the contribution at each pixel. The kernel radius is given by 1.0 times the smoothing length or 1.75 times the effective cell radius, respectively. The box side length is 3.5 times the virial radius.

The second image shows a scatterplot of individual gas particle positions for the same views. The box size is also the same and the virial radius is shown as a white circle. The current temperatures of the particles are indicated by the color scale and their instantaneous velocities by a small vector. The left (sub-)panel shows all gas and the right (sub-)panel shows only gas with log(Temperature) below 5.0.

The third image shows a comparison of the gas (left) and dark matter (right) structure on larger scales, where the box side length is 10 times the virial radius. The gas is again coded by temperature and the DM by velocity dispersion.


All objects are from the 512^3 simulations. Halos are shown matched between Gadget and Arepo.

RedshiftsLog(Msun) Bins
0.0 10.75 - 11.00 11.00 - 11.25 11.25 - 11.50 11.50 - 11.75 11.75 - 12.00 12.00 - 13.60
1.0 10.75 - 11.00 11.00 - 11.25 11.25 - 11.50 11.50 - 11.75 11.75 - 12.00 12.00 - 13.60
2.0 10.75 - 11.00 11.00 - 11.25 11.25 - 11.50 11.50 - 11.75 11.75 - 12.00 12.00 - 13.60
3.0 10.75 - 11.00 11.00 - 11.25 11.25 - 11.50 11.50 - 11.75 11.75 - 12.00 12.00 - 13.60

Contact: Dylan Nelson