Observations show that in the global morphology of spiral galaxies appear and form multi-scale fe... more Observations show that in the global morphology of spiral galaxies appear and form multi-scale features that are embedded in a complex complete picture of the galaxy. The origin and nature of the observed heterogeneity of the global spiral pattern of galaxies are not firmly established at this time. Based on the numerical simulation a possible new mechanism of appearance and formation in the two-armed global spiral galaxies' morphology of a number of gas-dynamic elements similar to each other in shape and independent in brightness is analyzed. Numerical simulation of unsteady gas-dynamic processes occurring under the influence of an external gravitational field is done. It is shown that as a result of the nonlinear supersonic interaction of occurring spiral formations with the flow of the matter features with hydrodynamic nature are appeared, with modeling results well matching with the observations.
The results of numerical simulations aimed at studying large-scale morphological features in the ... more The results of numerical simulations aimed at studying large-scale morphological features in the structure of spiral galaxies are presented. The behavior of a gaseous disk in an external gravitational potential that does not contain slow spiral modes is studied. The polygonal pattern that arises in the gaseous component displays transient properties characteristic of the non-stationary dynamics of the spiral pattern.
We have carried out numerical simulations of hydrodynamical processes occurring in the disks of s... more We have carried out numerical simulations of hydrodynamical processes occurring in the disks of spiral galaxies. The initial state of the disk is an equilibrium stellar-gaseous configuration. The spherical component is described by a standard analytical model for the gravitational potential. The behavior of the modeled disk in the presence of an external perturbation is analyzed. The results of numerical simulations of stellar-gaseous galactic disks aimed at studying the formation of polygonal structures in spiral galaxies are presented. The possible influence of spur-like formations on the appearance of polygonal structure is studied.
Observations show that in the global morphology of spiral galaxies appear and form multi-scale fe... more Observations show that in the global morphology of spiral galaxies appear and form multi-scale features that are embedded in a complex complete picture of the galaxy. The origin and nature of the observed heterogeneity of the global spiral pattern of galaxies are not firmly established at this time. Based on the numerical simulation a possible new mechanism of appearance and formation in the two-armed global spiral galaxies' morphology of a number of gas-dynamic elements similar to each other in shape and independent in brightness is analyzed. Numerical simulation of unsteady gas-dynamic processes occurring under the influence of an external gravitational field is done. It is shown that as a result of the nonlinear supersonic interaction of occurring spiral formations with the flow of the matter features with hydrodynamic nature are appeared, with modeling results well matching with the observations.
The results of numerical simulations aimed at studying large-scale morphological features in the ... more The results of numerical simulations aimed at studying large-scale morphological features in the structure of spiral galaxies are presented. The behavior of a gaseous disk in an external gravitational potential that does not contain slow spiral modes is studied. The polygonal pattern that arises in the gaseous component displays transient properties characteristic of the non-stationary dynamics of the spiral pattern.
We have carried out numerical simulations of hydrodynamical processes occurring in the disks of s... more We have carried out numerical simulations of hydrodynamical processes occurring in the disks of spiral galaxies. The initial state of the disk is an equilibrium stellar-gaseous configuration. The spherical component is described by a standard analytical model for the gravitational potential. The behavior of the modeled disk in the presence of an external perturbation is analyzed. The results of numerical simulations of stellar-gaseous galactic disks aimed at studying the formation of polygonal structures in spiral galaxies are presented. The possible influence of spur-like formations on the appearance of polygonal structure is studied.
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Papers by E. Filistov