6,808 research outputs found
Hypothesis about Enrichment of Solar System
Despite significant progress in the understanding of galactic nucleosynthesis
and its influence on the solar system neighborhood, challenges remain in the
understanding of enrichment of the solar system itself. Based on the detailed
review of multi-disciplinary literature, we propose a scenario that an event of
nucleogenesis -- not nucleosynthesis (from lower nucleon numbers A to higher A)
but nuclear-fission (from higher A to lower A) -- occurred in the inner part of
the solar system at one of the stages of its evolution. We propose a feasible
mechanism of implementation of such event. The occurrence of such event could
help explain the puzzles in yet-unresolved isotopic abundances, certain
meteoritic anomalies, as well as peculiarities in the solar system's
composition and planetary structure. We also discuss experimental data and
available results from existing models (in several relevant sub-fields) that
provide support and/or appear consistent with the hypothesis.Comment: 73 pages, 31 figures. arXiv admin note: text overlap with
arXiv:1610.07202, arXiv:1109.3432, arXiv:1302.6530 by other author
Equation of State for Water in the Small Compressibility Region
The equation of state for dense fluids has been derived within the framework
of the Sutherland and Katz potential models. The equation quantitatively agrees
with experimental data on the isothermal compression of water under
extrapolation into the high pressure region. It establishes an explicit
relationship between the thermodynamic experimental data and the effective
parameters of the molecular potential
Tsunami generation by ocean floor rupture front propagation: Hamiltonian description
The Hamiltonian method is applied to the problem of tsunami generation caused by a propagating rupture front and deformation of the ocean floor. The method establishes an alternative framework for analyzing the tsunami generation process and produces analytical expressions for the power and directivity of tsunami radiation (in the far-field) for two illustrative cases, with constant and gradually varying speeds of rupture front propagation
Constrained Reductions of 2D dispersionless Toda Hierarchy, Hamiltonian Structure and Interface Dynamics
Finite-dimensional reductions of the 2D dispersionless Toda hierarchy,
constrained by the ``string equation'' are studied. These include solutions
determined by polynomial, rational or logarithmic functions, which are of
interest in relation to the ``Laplacian growth'' problem governing interface
dynamics. The consistency of such reductions is proved, and the Hamiltonian
structure of the reduced dynamics is derived. The Poisson structure of the
rationally reduced dispersionless Toda hierarchies is also derivedComment: 18 pages LaTex, accepted to J.Math.Phys, Significantly updated
version of the previous submissio
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