Type Ia supernovae for cosmology a theorist's view

Details Type Ia supernovae for cosmology a theorist's view Type Ia supernovae for cosmology a theorist's view

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..478..143w&link_type=abstract

Second international workshop on particle physics and the early universe (COSMO-98). AIP Conference Proceedings, Volume 478, pp

Physics

Observational Cosmology, Supernovae

Scientific paper

Although one may use Type Ia supernovae strictly as empirical standard candles, our theoretical understanding of these events is very primitive and this should be a cause for concern. Perhaps the most surprising result to the model builder is that, observationally, the light curves from these events are characterized to such high accuracy by a single parameter. Most models nowadays have at least two parameters, e.g., the mass of 56Ni synthesized and its spatial distribution in the explosion. If there are multiple independent parameters, and especially if these parameters have different evolutions with redshift, the use of Type Ia supernovae to determine cosmological distances would be in jeopardy.

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