Lecture 29

Supernova Nucleosynthesis

Type II (Massive/Collapse): Pre-Supernova Evolution

• Hydrostatic nucleosynthesis
• He thru O burning
  a tidy onion? not! not!
• NSE and Si burning
• Explosive Nucleosynthesis
  movie
• burning results laid bare: Cas A elemental, and in ⁴⁴Ti

Core Collapse and Explosion

1. collapse
2. bounce
3. a miracle occurs
4. explosion!

Neutrinos

• neutronization
• thermal emission

SN 1987A

• progenitor
• explosion
• rings: collision stills from HST, movies from HST, Chandra
• inner blast movie: HST
• neutrinos: neutrino curve
• 2002 Nobel Prize in Physics:
  Masatoshi Koshiba and Kamiokande