Talk detail

Participant	Ivanov, Dimitar
Institution	SISSA - International School for Advanced Studies - Via Bonomea 265 - Trieste - TS - Italy

Session	DE1	Accepted		Order	Time
Talk	Oral abstract	Title	The Luminosity Distance - Redshift Relation in Cosmologies Beyond FLRW
Coauthors
Abstract	Observations from standard candles (such as type Ia supernovae) are usually fitted with a theoretical d_L(z) relation based on simple FLRW cosmology. If one considers departures from such a cosmology, for example due to cosmic structure inhomogeneities or in models beyond the ΛCDM, one needs an improved formula for the luminosity distance. I will show how such a formula can be derived in Conformally FLRW and linearly perturbed FLRW cosmologies. The derivation is based on two different but related approaches - one using the Jacobi map and another using the van Vleck determinant. I will finish by commenting on the application of this formalism to the analysis of present and future data.
Pdf file

Session	PT2	Accepted		Order	Time
Talk	Oral abstract	Title	The Luminosity Distance - Redshift Relation in Cosmologies Beyond FLRW
Coauthors
Abstract	Observations from standard candles (such as type Ia supernovae) are usually fitted with a theoretical d_L(z) relation based on simple FLRW cosmology. If one considers departures from such a cosmology, for example due to cosmic structure inhomogeneities or in models beyond the ΛCDM, one needs an improved formula for the luminosity distance. I will show how such a formula can be derived in Conformally FLRW and linearly perturbed FLRW cosmologies. The derivation is based on two different but related approaches - one using the Jacobi map and another using the van Vleck determinant. I will finish by commenting on the application of this formalism to the analysis of present and future data.
Pdf file