<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Cosmology as a probe of gravity with future surveys"^^ . "The subject of this thesis are different aspects of cosmology as a probe of the underlying\r\ngravitational theory with future surveys.\r\nIn the first part of this work we discuss the parameter dependence of covariance matrices\r\nof the power spectrum estimator of the large-scale structure. Its variation across parameter\r\nspace is calculated analytically by constructing a suitable basis and is then compared with\r\nnumerical simulations. The method presented is applicable to any matrix-valued function\r\nwhich is everywhere positive-definite.\r\nThe second part investigates the influence of tidal gravitational fields on the formation\r\nof dark matter halos at peaks in the density field of the large-scale structure. We extend\r\nthe spherical collapse model to incorporate the influence of shear and rotation by treating\r\nthem as inhomogeneities in the non-linear evolution equation. We investigate the statistics\r\nof the tidal field and how it is inherited to the statistics of the critical over-density δc. It\r\nis shown that the collapse in a tidal field will always proceed faster than the collapse in a\r\nhomogeneous background.\r\nThe last part investigates the combination of observations of weak gravitational lensing,\r\ngalaxy clustering and the cosmic microwave background and the cross-correlations between\r\nthe probes to investigate scalar-tensor theories of gravity. We carry out a Fisher analysis as\r\nwell as a Monte-Carlo-Markov-chain to estimate the expected statistical errors. The analysis\r\nshows that gravitational theories can be constrained very well with future surveys."^^ . "2018" . . . . . . . "Robert Felix"^^ . "Reischke"^^ . "Robert Felix Reischke"^^ . . . . . . "Cosmology as a probe of gravity with future surveys (PDF)"^^ . . . "PHD_Thesis_Final_Robert_Reischke.pdf"^^ . . . "Cosmology as a probe of gravity with future surveys (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Cosmology as a probe of gravity with future surveys (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Cosmology as a probe of gravity with future surveys (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Cosmology as a probe of gravity with future surveys (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Cosmology as a probe of gravity with future surveys (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #24848 \n\nCosmology as a probe of gravity with future surveys\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .