MG13 - Talk detail |
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Participant |
Celerier, Marie-Noelle | |||||||
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Institution |
Observatoire de Paris - 5 place Jules Janssen - Meudon - - France | |||||||
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Session |
TC3 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Fully characterizing axially symmetric Szekeres models with three data sets | |||||
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Abstract |
Inhomogeneous exact solutions of GR with zero cosmological constant have been used in the literature to challenge the $\Lambda$CDM model. From one patch LTB models to axially symmetric quasi-spherical Szekeres (QSS) Swiss-cheese models (see Priti Mishra's talk in the CM2 Session), some of them are able to reproduce to a good accuracy the cosmological data. Mustapha et al. (1997) and Uzan et al. (2008) showed that a zero $\Lambda$ LTB model with a central observer can be fully determined by two data sets. We demonstrate that an axially symmetric zero $\Lambda$ QSS model with an observer located at the origin can be fully reconstructed from three data sets, number counts, luminosity distance and redshift drift. This is a first step towards a future demonstration involving five data sets and the most general Szekeres model. |
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