Supernova Remnants in the Hα and Hβ Lines

Vasiliev, E. O.; Shchekinov, Yu. A.

doi:10.1007/s10511-017-9458-9

Cited by 3 publications

(3 citation statements)

References 38 publications

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Section: Equations and Numerical Algorithmmentioning

confidence: 99%

“…Such an approach is employed as the simplest cooling model in various studies of astrophysical gas dynamics [96][97][98][99]. A more realistic consideration of thermal processes requires a cooling function that depends on temperature, density, and gas metallicity [100][101][102][103]. A correct description of gas cooling is possible for multicomponent gas models that take chemical reactions and gas metallicity into account, as is done in the modeling of the molecular clouds in the disks of spiral galaxies [104][105][106].…”

Section: Equations and Numerical Algorithmmentioning

confidence: 99%

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Modeling of Spiral Structure in a Multi-Component Milky Way-Like Galaxy

2021

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Using recent observational data, we construct a set of multi-component equilibrium models of the disk of a Milky Way-like galaxy. The disk dynamics are studied using collisionless-gaseous numerical simulations, based on the joined integration of the equations of motion for the collision-less particles using direct integration of gravitational interaction and the gaseous SPH-particles. We find that after approximately one Gyr, a prominent central bar is formed having a semi-axis length of about three kpc, together with a multi-armed spiral pattern represented by a superposition of m= 2-, 3-, and 4-armed spirals. The spiral structure and the bar exist for at least 3 Gyr in our simulations. The existence of the Milky Way bar imposes limitations on the density distributions in the subsystems of the Milky Way galaxy. We find that a bar does not form if the radial scale length of the density distribution in the disk exceeds 2.6 kpc. As expected, the bar formation is also suppressed by a compact massive stellar bulge. We also demonstrate that the maximum value in the rotation curve of the disk of the Milky Way galaxy, as found in its central regions, is explained by non-circular motion due to the presence of a bar and its orientation relative to an observer.

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Section: Equations and Numerical Algorithmmentioning

confidence: 99%

Section: Equations and Numerical Algorithmmentioning

confidence: 99%

Modeling of Spiral Structure in a Multi-Component Milky Way-Like Galaxy

2021

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“…Such an approach is used as the simplest cooling model in various studies on the dynamics of astrophysical gas [10][11][12][13]. A more realistic consideration of thermal processes requires a cooling function that depends on temperature and density [14][15][16][17] and we plan to investigate this issue in the future. A correct description of the gas cooling is possible for multicomponent models that take chemical reactions into account, as is done in modelling molecular clouds in S-galaxy discs [18][19][20].…”

Section: Equations and Equilibrium Modelmentioning

confidence: 99%

Numerical Modelling of the Dynamics of the Galactic Halos in the Colliding Galaxies

Khrapov¹,

Хоперсков²,

Корчагин³

2019

Bulletin SUSU MMP

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Based on parallel three-dimensional simulation of N-body and gas self-consistent dynamics, we study the behavior of hot coronal gas in the colliding galaxies with "live" dark matter halos. We model a few scenarios of the galactic collisions including "bull-eye" and non-central ones, and use different values of the initial velocities of the colliding galaxies. Taking into account the self-gravity, we demonstrate that the collision of gaseous and stellar components does not lead to the formation of a gaseous "protogalaxy" observed in some numerical simulations. Also, we show that about sixty percent of hot halo gas is expelled into intergalactic space during the collision. Numerical simulations show that a considerable amount of gas (up to 70% for a bull-eye collisions) exchanges between two colliding galaxies.

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Collective supernova outbursts and the growth of supershells: Observational manifestations

Shchekinov

Vasiliev

2017

Astron. Rep.

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Supernova Remnants in the Hα and Hβ Lines

Cited by 3 publications

References 38 publications

Modeling of Spiral Structure in a Multi-Component Milky Way-Like Galaxy

Modeling of Spiral Structure in a Multi-Component Milky Way-Like Galaxy

Numerical Modelling of the Dynamics of the Galactic Halos in the Colliding Galaxies

Collective supernova outbursts and the growth of supershells: Observational manifestations

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