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gr-qc2025
Gravitational shadow and emission spectrum of thin accretion disks in a plasma medium
Kirill Kobialko, Dmitri Gal'tsov, Alexey Molchanov
In anticipation of future multi-frequency observations of black hole with the Next Generation Event Horizon Telescope (ngEHT), we construct spectral images of a thin accretion disk…
gr-qc2025
Gauged supergravities: solutions with Killing tensor
Dmitri Gal'tsov, Rostom Karsanov
We perform full integration of the stationary axisymmetric Einstein-Maxwell-dilaton-axion (EMDA) theory with and without potential using a recently proposed generalization of Carte…