Halo lightcones

Lightcone halo catalogues extending to redshift \(z=15\) have been constructed by interpolating the HBT-HERONS halo catalogues between snapshots using black hole particles as tracers of the halo positions. Note that this causes incompleteness below the minimum halo mass for seeding black holes. The seeding mass varies with simulation resolution and is given by

\(\mathrm{M_{seed}} = 2.757 \times 10^{11} \mathrm{M}_\odot \frac{\mathrm{M_{gas}}}{1.07 \times 10^9 \mathrm{M}_\odot}\)

where \(\mathrm{M_{gas}}\) is the gas particle mass. In addition, any galaxies that have lost their black holes, which is particularly relevant for satellites, are missing. See the links below for details.

• Construction
  • Snapshots and redshift shells
  • Matching halos to the black hole particle lightcone
  • Choice of tracer particle
• Directory layout
• File format
  • Halo properties from the input halo catalogue
  • Halo properties specific to the lightcone
  • Spatial indexing
• Reading the halos
  • Installation
  • Reading a lightcone halo catalogue file
  • Accessing halo lightcone data
  • Reading SOAP properties for lightcone halos

Note

If you wish to use the halo lightcones in conjunction with the integrated maps, you need to ensure you apply the same rotations