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http://hdl.handle.net/11701/38313
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Поле DC | Значение | Язык |
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dc.contributor.author | Tkachenko, Roman V. | - |
dc.contributor.author | Korchagin, Vladimir I. | - |
dc.contributor.author | Jmailov, Boris B. | - |
dc.date.accessioned | 2022-10-20T16:55:57Z | - |
dc.date.available | 2022-10-20T16:55:57Z | - |
dc.date.issued | 2022-09 | - |
dc.identifier.citation | Tkachenko R.V., Korchagin V. I., Jmailov B.B. Gravitational instability of gasdust circumnuclear disks in nearby galaxies. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2022, vol. 9 (67), issue 3, pp. 561–571. https://doi.org/10.21638/spbu01.2022.316 (In Russian) | en_GB |
dc.identifier.other | https://doi.org/10.21638/spbu01.2022.316 | - |
dc.identifier.uri | http://hdl.handle.net/11701/38313 | - |
dc.description.abstract | Using the two-dimensional multi-component hydrodynamical simulations, we study the effect of dust on the development of instability in the gas-dust mini-disks observed in the central regions of galaxies. The dust is coupled with the gas gravitationally and by means of a friction force depending on the velocity difference between the two components. The presence of dust leads to the instability of a mini-disk and the development of a spiral structure observed in the gas-dust mini-disks. The spiral structure is multi-armed, which is caused by a dominance of the high order Fourier harmonics in the unstable modes. The instability of gas-dust circumnuclear disks is an important mechanism for explaining the activity of galactic nuclei associated with the accretion of matter onto a central black hole. We find that the admixture of dust with a dust-to-gas ratio of 10–20% significantly destabilizes the gas-dust disk. | en_GB |
dc.language.iso | ru | en_GB |
dc.publisher | St Petersburg State University | en_GB |
dc.relation.ispartofseries | Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 3 | - |
dc.subject | circumnuclear disks | en_GB |
dc.subject | numerical simulations | en_GB |
dc.subject | computational hydrodynamics | en_GB |
dc.subject | galactic centres | en_GB |
dc.title | Gravitational instability of gasdust circumnuclear disks in nearby galaxies | en_GB |
dc.type | Article | en_GB |
Располагается в коллекциях: | Issue 3 |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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561-571.pdf | 3,81 MB | Adobe PDF | Просмотреть/Открыть |
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