A. C. Quillen 2001 ApJ 563 313 doi:10.1086/323681
A Wind-driven Warping Instability in Accretion Disks
FREEA. C. Quillen1,2
Show affiliationsA wind passing over a surface may cause an instability in the surface, such as the flapping seen when wind blows across a flag or waves when wind blows across water. We show that when a radially outflowing wind blows across a dense thin rotating disk, an initially flat disk is unstable to warping. When the wind is subsonic, the growth rate is dependent on the lift generated by the wind and the phase lag between the pressure perturbation and the vertical displacement in the disk caused by drag. When the wind is supersonic, the growth rate is primarily dependent on the form drag caused by the surface. While the radiative warping instability proposed by Pringle is promising for generating warps near luminous accreting objects, we expect that the wind-driven instability introduced here would dominate in objects that generate energetic outflows.
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- Dates
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Issue 1 (2001 December 10)
Received 2001 May 3, accepted for publication 2001 August 7
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A Wind-driven Warping Instability in Accretion Disks
A. C. Quillen 2001 ApJ 563 313
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