The Sunyaev-Zeldovich Effect

• The Sunyaev-Zeldovich Effect
• Wait... an increase in photon energy makes a temperature decrement? Howzat?
  
• How factors depend on h (remember h=H0/100)
  
• Using the SZ to determine H0 (or h=H0/100)
• SZ measurements
• Concerns with SZ
• X-rays in clusters: smooth, lumpy, Coma
• Early results were pretty much all over the map
• Recent results, well... still are? (H0=66 +/- 10(ran) +/- 10(sys), from Jones etal MNRAS 357 518 2005)
  
• Next stop: other cosmological parameters?