Quote:
Originally Posted by Jerry
The mainstream position remains that carefully characterized type Ia supernova are a special class of events in which the absolute magnitude is a function of strick mass and compositional boundaries. The observations noted in this thread do not support this simplistic approach in using supernovae to measure cosmic distance. Multiple parameterics come into play.
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You confuse two different aspects of supernova research: 1) their composition, 2) their phenomenological properties.
Now undoubtedly, 1) causes 2). Yet different theories as to the nature of 1) do not actually change the observed results of 2).
Gravity could be caused by little elves, yet this would not change the measured properties of gravity. Similarly, type 1a supernovae could result when elves blow out their birthday-cakes. This would mean that there are all sorts of parameters: chocolate/vanilla cake, different frostings, the use of roman candles as well as normal candles, etc. The measured dispersion of these things remains the same, however.