3 papers
astro-ph.HE2026
Analytical approaches to the study of the phase of the visibility function
S. V. Chernov
In radio interferometric observations, the main source of information is the complex visibility function, which includes amplitude and phase. In this paper, the dependence of the p…
gr-qc2025
Analytical model of the photon ring with finite thickness
S. V. Chernov
An analytical model of a thick asymmetric Gaussian ring is presented for which the visibility function is calculated in two perpendicular directions for baselines up to 6 of the Ea…
astro-ph.IM2025
Method for Determining the Parameters of a Ring-like Structure from the Visibility Function Shape
S. V. Chernov, M. A. Shchurov, I. I. Bulygin +1
Black hole images obtained by very long baseline interferometry (VLBI) by the Event Horizon Telescope are a new tool for testing general relativity in super-strong gravitational fi…