Nicole Drakos
Research Blog
Welcome to my Research Blog.
This is mostly meant to document what I am working on for myself, and to communicate with my colleagues. It is likely filled with errors!
This project is maintained by ndrakos
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