<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "On astrophysical solutions in the constructive gravity program and cosmological tests for weakly birefringent spacetime"^^ . "Via gravitational closure [Dü+18]; [Wol22]; [Due20]; [Wie18] could show, how gravitational\r\ntheories based on the matter content of spacetime can be systematically constructed. While\r\nthis successfully reproduces general relativity for metric spacetimes, finding a solution for the\r\nsimplest generalization of Maxwell electrodynamics with a vacuum birefringence allowing,\r\narea-metric structure has in general not been possible so far. For highly symmetric FLRW\r\nspacetimes a metric, as well as an area-metric solution could be derived [Due20]; [Fis17].\r\nBased on this result, the constructive gravity program will be applied for spherically symmetric,\r\nstationary metric spacetimes. Furthermore, an according ansatz is worked out for\r\narea-metric geometries, and it is discussed which difficulties arise in finding a corresponding\r\nsolution. Furthermore, the Etherington-duality is violated in the case of weakly area-metric\r\ngravitation [Sch+17]; [Ale20b]; [SW17], and this violation will be investigated with weak\r\ngravitational lensing experiments. The observable is the surface brightness, which is, however,\r\nheavily influenced by astrophysical processes like physical interaction of galaxies with tidal\r\nfields. Beyond that, it is studied how galaxies also get bent due to tidal interactions and how\r\nstrong this effect is compared to its analog in gravitational lensing."^^ . "2023" . . . . . . . "Eileen Sophie"^^ . "Giesel"^^ . "Eileen Sophie Giesel"^^ . . . . . . "On astrophysical solutions in the constructive gravity program and cosmological tests for weakly birefringent spacetime (PDF)"^^ . . . "Dissertation_Giesel_Eileen.pdf"^^ . . . "On astrophysical solutions in the constructive gravity program and cosmological tests for weakly birefringent spacetime (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "On astrophysical solutions in the constructive gravity program and cosmological tests for weakly birefringent spacetime (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "On astrophysical solutions in the constructive gravity program and cosmological tests for weakly birefringent spacetime (Other)"^^ . . . . . . "preview.jpg"^^ . . . "On astrophysical solutions in the constructive gravity program and cosmological tests for weakly birefringent spacetime (Other)"^^ . . . . . . "medium.jpg"^^ . . . "On astrophysical solutions in the constructive gravity program and cosmological tests for weakly birefringent spacetime (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #32691 \n\nOn astrophysical solutions in the constructive gravity program and cosmological tests for weakly birefringent spacetime\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .