title: Gravitational instability of gasdust circumnuclear disks in nearby galaxies
metadata.name: dc.contributor.author
metadata.value: Tkachenko, Roman V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Korchagin, Vladimir I.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Jmailov, Boris B.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2022-10-20T16:55:57Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2022-10-20T16:55:57Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2022-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: 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)
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu01.2022.316
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/38313
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: 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.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 9 (67); Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: circumnuclear disks
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: numerical simulations
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: computational hydrodynamics
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: galactic centres
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Gravitational instability of gasdust circumnuclear disks in nearby galaxies
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 561-571.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/38313/1/561-571.pdf
resources.format: Adobe PDF
resources.size: 3,81 MB