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Abstract We have ascertained an important role of rotation effects in a collapsing stellar core using a quasi-one-dimensional hydrodynamic model with a rigorous allowance for the neutrino energy losses including the neutrino opacity stage. However, the neutrino scattering processes are not...
Abstract Coalescing binary neutron stars are the most promising candidates for detection by gravitational-wave detectors and are considered to be most promising for explaining the phenomenon of short gamma-ray bursts. The magnetic fields of neutron stars during their coalescence can produce a...
Abstract We present new results of our visual (V, R, I) and near-infrared (J,H,K) photometry for the unusual young star V718 Per. They show that, in addition to prolonged eclipses following one another with a period of 4.7 yr, the star also exhibits low-amplitude brightness oscillations with a...
Abstract Based on the Ogorodnikov-Milne model, we analyze the proper motions of 95 633 red giant clump (RGC) stars from the Tycho-2 Catalogue. The following Oort constants have been found: A = 15.9 ± 0.2 km s−1 kpc−1 and B = −12.0±0.2 km s−1 kpc−1. Using 3632 RGC stars with known proper motions,...
Abstract We consider a model that describes the evolution of distant satellite orbits and that refines the solution of the doubly averaged Hill problem. Generally speaking, such a refinement was performed previously by J. Kovalevsky and A.A. Orlov in terms of Zeipel’s method by constructing a...
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