Light Cone 512 Sims

In this post, I summarized the current method I have for generating light cones. However, my code was much to slow to run on the 500 snapshots I have for the $512^3$ simulation. Therefore, I have sped up the code significantly by (1) switching to using pandas data frames in python and (2) pre-calculating which snapshots have redshifts that overlap with the possible redshifts of the tiled simulation block, and only analyzing those.

Results

Here are the results with 20 tiled boxes ($z<1$).

The positions of the halos in x-y-z space (downsampled to $10^5$ halos)

The halo mass functions:

Next Steps

1) Finalize the abundance matching code, using these $512^3$ simulations, and populate the lightcone with galaxies.

• write a bit of code to read in IDs of subhalos on the lightcone, and include this in the SHAM procedure
• make sure the scatter model is working properly
• get stellar mass functions that evolve with redshift (right now I just have it for redshift zero)

2) Go through some of the potential problems in my light cone method, as outlined in the previous post

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