Leninskie Gory

Oct 22, 2024 | pubs.aip.org | Leninskie Gory |Jinzhe Zeng |Y. A. Ran

We describe the new method that can be useful for calculation of the excitation dynamics in large molecular arrays that can be split into compartments with weak exciton coupling between them. In this method, the dynamics within each compartment is evaluated nonperturbatively using hierarchical equations of motion (HEOM), whereas transfers between the exciton states belonging to different compartments are treated by the generalized Förster (gF) theory.

Jan 17, 2024 | academic.oup.com | Leninskie Gory

A shock layer (SL) is a region of gas bounded on one side by a shock wave and on the other side by a tangential discontinuity. In this paper, we focus on large-scale SLs, which are fairly common in astrophysics. They can be found in problems on the explosion of supernovae, the interaction of stellar winds with each other in systems of binary stars, and the interaction of stellar winds with comets, planetary magnetospheres, or interstellar media.

Jan 2, 2024 | link.aps.org | Leninskie Gory

Abstract Dark matter sterile neutrinos radiatively decay in the Milky Way, which can be tested with searches for almost monochromatic photons in the x-ray cosmic spectrum. We analyse the data of SRG/ART-XC telescope operated for two years in the all-sky survey mode. With no significant hints in the Galactic diffuse x-ray spectrum we explore models with sterile neutrino masses in 12–40 keV range and exclude corresponding regions of sterile-active neutrino mixing.