NDLI: Vortices in Rotating Gravitating Gas Disks

Content Provider	Springer Nature Link
Author	Abrahamyan, M. G.
Copyright Year	2015
Abstract	Linear and nonlinear vortex perturbations of a gravitating gaseous disk are examined in the geostrophic and post-geostrophic approximations. The structures of the isolated monopole and dipole vortex (modons) solutions of these equations are studied. Two types of mass distributions in dipole vortices are found. The first type of modon is characterized by an asymmetrically positioned single circular densification and one rarefaction. The second type is characterized by two asymmetrically positioned densifications and two rarefactions, where the second densification-rarefaction pair is crescent shaped. The constant density contours of a dipole vortex in a light gas disk coincide with the streamlines of the vortex; in a self-gravitating disk the constant density contours in the vortex do not coincide with streamlines. Possible manifestations of monopole and dipole vortices in astrophysical objects are discussed.
Starting Page	89
Ending Page	105
Page Count	17
File Format	PDF
ISSN	05717256
Journal	Astrophysics
Volume Number	58
Issue Number	1
e-ISSN	15738191
Language	English
Publisher	Springer US
Publisher Date	2015-03-26
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	vortex monopole dipole structure gravitating disk Astronomy, Astrophysics and Cosmology Astrophysics and Astroparticles
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics

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Vortices in Rotating Gravitating Gas Disks