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gr-qc2024
Black hole models and astronomical observations
Serge Parnovsky
Some well-known metrics used as models of static non-rotating black holes are considered. These are the Reissner-Nordstrom-de Sitter, Bardeen-Kiselev and McVittie models. A signifi…
gr-qc2023
Is the Universe anisotropic right now? Comparing the real Universe with the Kasner's space-time
S L Parnovsky
We investigate possible astronomical manifestations of space-time anisotropy. The homogeneous vacuum Kasner solution was chosen as a reference anisotropic cosmological model becaus…