Amplification of Spiral Density Waves in Gaseous and Dust Galactic Disks as a Result of Interaction with the Halo

Details Amplification of Spiral Density Waves in Gaseous and Dust Galactic Disks as a Result of Interaction with the Halo Amplification of Spiral Density Waves in Gaseous and Dust Galactic Disks as a Result of Interaction with the Halo

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000arep...44..647a&link_type=abstract

Astronomy Reports, vol. 44, Issue 10, p.647-653

Astronomy and Astrophysics

Astronomy

Scientific paper

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 leading spiral density waves are unstable. Bending oscillations of the disk can also be unstable when the disk interacts with the halo.

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