Dark matter's influence on a typical galaxy

• Jordan Boyd
• Typical galaxy rotation velocity-vs-distance from center data are explained with dark matter
• Simulate galaxy with and without dark matter using Newtonian gravity
• How is the mass distributed?

Approach

Split into particles. (Cannot simulate billions of particles)

• N-body many particle simulation.
  • real matter: particles
  • dark matter: potential
• Decide on scaling and how many particles.
• Simulate dynamics with velocity verlet

Objectives

1. velocity vs radius graph

Q&A

1. How is dark matter distributed?
   • spherical, halo
   • try different distributions