2. ALEXEI-O. RAZOUMOV
Information acquired: 2025
ALEXEI-O. RAZOUMOV is an academic who published a paper in 1999 entitled Calculating the inhomogeneous reionization of the universe. ALEXEI-O. RAZOUMOV published this work as part of a team: Razoumov, Alexei O.. Here is a description of this work: A numerical scheme for the solution of the three-dimensional, frequency- and time-dependent radiative transfer equation with variable optical depth is developed for modelling the reionization of the Universe. Until now, the main difficulty in simulating the inhomogeneous reionization has been the treatment of cosmological radiative transfer. The proposed approach is drastically different from previous studies, which either resorted to a very simplified, parametric treatment of radiative transfer, or relied on one-dimensional models. The algorithm presented here is based on explicit multidimensional advection of wavefronts at the speed of light, combined with the implicit solution of the local chemical rate equations separately at each point. I implement the ray-tracing version of this algorithm on a desktop workstation and check its performance on a wide varie.