The magnituderedshift relation for type Ia supernovae, locally inhomogeneous cosmological models, and the nature of dark matter
Abstract
The magnitudedistance relation for Type Ia supernovae is one of the key pieces of evidence supporting the cosmological concordance model. The resulting constraints on the cosmological parameters are often derived under the idealized assumption that the universe is perfectly homogeneous on small scales. Since we know that this is not the case, what does this mean for constraints on cosmological parameters derived from the magnitudedistance relation for Type Ia supernovae? And, conversely, what does the fact that these constraints, when smallscale homogeneity is assumed, agree with other constraints mean for the nature of dark matter?
 Publication:

2016 Cosmology: Proceedings of the 51st Rencontres de Moriond
 Pub Date:
 October 2016
 Bibcode:
 2016cosm.conf..171H
 Keywords:

 cosmology: theory;
 cosmological parameters;
 dark matter;
 dark energy;
 supernovae: general