一夫一妻制
发表于 2025-3-30 10:25:24
Observational Manifestation of Chaos in Grand Design Spiral Galaxies,different families of streamlines in the disk. For the trajectories near separatrices of the giant vortices and near saddle points presenting in the velocity field, the LCN turned out to be positive. The result is insensitive to the method of the calculation. Both methods — using two trajectories an
泥土谦卑
发表于 2025-3-30 16:16:36
Quarter-Turn Spirals in Galaxies,described as quarter-turn spirals. Arguments are presented in favor of the idea that the latter set of spirals is caused by the response of the material of the disk to the gravitational potential of the main spiral arms. The peculiarities of the potential in the narrow transitional annulus between t
Optic-Disk
发表于 2025-3-30 16:31:27
Dynamics of Galaxies: From Observations to Distribution Functions,ction from observations of elliptical galaxies. Special attention is paid to the applications of distribution functions in the study of the internal dynamical structure of galaxies. It is indicated how existing modelling methods can be improved to correspond better with state-of-the-art observations
江湖郎中
发表于 2025-3-30 23:31:25
Joelle Murray,Wolfgang Bauer,Kevin HaglinSupersonic nonlinear gas flow is studied in order to describe galactic spiral density waves. It is shown analytically that ultra harmonic periodic solutions may exist if nonlinear effects are taken into account. The relevance of those solutions to observed data is discussed.
Diatribe
发表于 2025-3-31 02:58:28
Nonlinear Response of the Interstellar Gas Flow to Galactic Spiral Density Waves,Supersonic nonlinear gas flow is studied in order to describe galactic spiral density waves. It is shown analytically that ultra harmonic periodic solutions may exist if nonlinear effects are taken into account. The relevance of those solutions to observed data is discussed.
丑恶
发表于 2025-3-31 06:49:26
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投票
发表于 2025-3-31 11:55:37
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landmark
发表于 2025-3-31 17:08:43
https://doi.org/10.1007/978-1-4615-8231-1ction from observations of elliptical galaxies. Special attention is paid to the applications of distribution functions in the study of the internal dynamical structure of galaxies. It is indicated how existing modelling methods can be improved to correspond better with state-of-the-art observations and computation facilities.
Semblance
发表于 2025-3-31 20:28:02
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accessory
发表于 2025-4-1 00:02:40
Dynamics of Galaxies: From Observations to Distribution Functions,ction from observations of elliptical galaxies. Special attention is paid to the applications of distribution functions in the study of the internal dynamical structure of galaxies. It is indicated how existing modelling methods can be improved to correspond better with state-of-the-art observations and computation facilities.