Center of Galaxy: Theory

• Supermassive BH (not just 1 star, has grown slowly over time)

  • Explains the 3 million solar masses of material in tiny space
  • Explains non-motion of Sag A*
  • Sag A* is tilted accretion disk?
  • Spiral of gas is infalling material?
  • Energy for Sag A* from infall?

Notes: