Transient growth and coupling of vortex and wave modes in self-gravitating gaseous discs

Linear transient phenomena induced by flow non-normality in thin self-gravitating astrophysical discs are studied using the shearing sheet approximation. The considered system includes two modes of perturbations: vortex and (spiral density) wave. It is shown that self-gravity considerably alters the...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2007-10, Vol.381 (2), p.809-818
Hauptverfasser:	Mamatsashvili, G. R., Chagelishvili, G. D.
Format:	Artikel
Sprache:	eng
Schlagworte:	accretion accretion discs accretion, accretion discs Astronomy Astrophysics Earth, ocean, space Exact sciences and technology Fluid dynamics gravitation hydrodynamics instabilities planetary systems: protoplanetary discs Planets
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