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- W4372278719 abstract "We investigate possible astronomical manifestations of space-time anisotropy. The homogeneous vacuum Kasner solution was chosen as a reference anisotropic cosmological model because there are no effects caused by inhomogeneity in this simple model with a constant degree of anisotropy. This anisotropy cannot become weak. The study of its geodesic structure made it possible to clarify the properties of this space-time. It showed that the degree of manifestation of anisotropy varies significantly depending on the travel time of the light from the observed object. For nearby objects, for which it does not exceed half the age of the universe, the manifestations of anisotropy are very small. Distant objects show more pronounced manifestations, for example, in the distribution of objects over the sky and over photometric distances. These effects for each of the individual objects decrease with time, but in general, the manifestations of anisotropy in the Kasner space-time remain constant due to the fact that new sources emerging from beyond the cosmological horizon.We analyse observable signatures of the Kasner-type anisotropy and compare it to observations. These effects were not found in astronomical observations, including the study of the CMB. We can assume that the Universe has always been isotropic or almost isotropic since the recombination era. This does not exclude the possibility of its significant anisotropy at the moment of the Big Bang followed by rapid isotropization during the inflationary epoch." @default.
- W4372278719 created "2023-05-07" @default.
- W4372278719 creator A5065021316 @default.
- W4372278719 date "2023-05-04" @default.
- W4372278719 modified "2023-09-27" @default.
- W4372278719 title "Is the Universe anisotropic right now? Comparing the real Universe with the Kasner's space-time" @default.
- W4372278719 doi "https://doi.org/10.48550/arxiv.2305.02726" @default.
- W4372278719 hasPublicationYear "2023" @default.
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