Introduction

The following pages give an introduction to the functionality of SPARTA. It is highly recommended to read this section before attempting to use SPARTA, and, within this section, it is recommended to read the What is SPARTA? page before diving into the specifics.

Contents

• What is SPARTA?
  • Why SPARTA?
  • Fundamental components
• Halos & Subhalos
  • Halo and subhalo tracking
  • Ghosts
  • Halo status fields
  • Internal halo masses and radii
• Tracers
  • Particle tracers in host halos
  • Particle tracers in subhalos
  • Which particles belong to a subhalo?
  • Subhalo tracers
• Results & Analyses
  • Tracer results
  • Halo analyses
• Code framework
  • Workflow
  • Domain decomposition
  • Memory structure
  • Restarting
• Units and conventions
  • Unit system
  • Halo radius and mass definitions
  • Dynamical times and mass accretion rates
• Acknowlegments