Tutorials

The following examples will help you get started with beorn.

Some notebooks that show common use cases and visual examples:

• BEoRN: Quick-start with Artificial Halos
  • 1. Set simulation and astrophysical parameters
  • 2. Create the halo catalog
  • 3. Pre-compute radiation profiles
  • 4. Inspect the halo distribution
  • 5. Paint the 3D signal maps
  • 6. Visualise the 3D maps at a single redshift
  • 7. Global history and power spectra
  • 8. Lightcone
• BEoRN: Modelling the 21-cm Signal from the Epoch of Reionization
  • 1. Set simulation and astrophysical parameters
  • 2. Precompute radiation profiles
  • 3. Generate the cosmological density field and halo catalogs
  • 4. Inspect the halo catalog and density field
  • 5. Paint the 3D signal maps
  • 6. Visualise the 3D maps at a single redshift
  • 7. Global history and power spectra
  • 8. Lightcone
  • 9. Compare two runs
• BEoRN: Post-processing (PKDGRAV3) N-body Simulation Data
  • 1. Set simulation and astrophysical parameters
  • 2. Precompute radiation profiles
  • 3. Write a data loader for your N-body format
  • 4. Inspect the halo catalog and density field
  • 5. Paint the 3D signal maps
  • 6. Visualise the 3D maps at a single redshift
  • 7. Global history and power spectra
  • 8. Lightcone
• BEoRN: Exploring (THESAN) N-body Data
  • 1. Read a DM snapshot and build the density grid
  • 2. Halo catalog and the halo mass function
  • 3. Reading the merger trees and building the BEoRN cache
  • 4. Visualising merger trees — main progenitor branches
  • 5. Alpha fitting — individual mass accretion rates
  • Summary
• BEoRN: Post-processing with Merger Trees
  • How this tutorial is structured
  • 1. Set simulation and astrophysical parameters
  • 2. Precompute radiation profiles
  • 3. Prepare the simplified tree cache
  • 4. Write a merger tree loader for your simulation
  • 5. Inspect the halo catalog and alpha distribution
  • 6. Paint the 3D signal maps
  • 7. Visualise the 3D maps at a single redshift
  • 8. Global history and power spectra
  • 9. Compare with fixed α = 0.79 (optional)

A full run from a non-interactive script (command-line usage):

• Full run example
• Comparing two simulations side-by-side