Amplification of spiral density waves in gaseous and dust galactic disks as a result of interaction with the halo

Authors
Antonov, VA Baranov, AS
Citation
Va. Antonov et As. Baranov, Amplification of spiral density waves in gaseous and dust galactic disks as a result of interaction with the halo, ASTRON REP, 44(10), 2000, pp. 647-653
Citations number
19
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY REPORTS
ISSN journal
10637729 → ACNP
Volume
44
Issue
10
Year of publication
2000
Pages
647 - 653
Database
ISI
SICI code
1063-7729(200010)44:10<647:AOSDWI>2.0.ZU;2-T
Abstract
The effect of the discrete structure of the halo on local oscillations of a galactic disk is analyzed. Such effects have much in common with dynamical friction. Gaseous and stellar disks are considered; in both cases, some le ading spiral density waves are unstable. Bending oscillations of the disk c an also be unstable when the disk interacts with the halo. (C) 2000 MAIK "N auka/Interperiodica".