Type Ia Supernovae

• Type Ia SNe
• Type Ia SNe as standard candles
• Decline rate correction
• Decline rate diagram
• Effect of decline rate correction on mag-redshift plot
• Recent mag-redshift plot (Sandage etal ApJ, in press 2006)
  
• Other problems
  
• Testing for dust
• Cepheid calibrators (Saha etal 1997)
  
• H0 estimating (Saha etal 1997)
• Fixing systematic errors (Riess etal. ApJ, 627, 579, 2005; H0=73 +/- 4)
• Rebuttal (Sandage etal ApJ, in press 2006; H0=62 +/- 1.3 (ran) +/- 5 (sys))