Reviving Dead Zones in Accretion Disks by Rossby Vortices at their Boundaries

Details Reviving Dead Zones in Accretion Disks by Rossby Vortices at their Boundaries Reviving Dead Zones in Accretion Disks by Rossby Vortices at their Boundaries

2005-11-23

arxiv.org/abs/astro-ph/0511684v1

Astronomy and Astrophysics

Astrophysics

accepted by A&A letters

Scientific paper

10.1051/0004-6361:200500226

Models of the accretion disks of Young Stellar Objects show that they should not be ionized at a few AU from the star, and thus not subject to the MHD turbulence believed to cause accretion. This has been suggested to create a 'Dead Zone' where accretion remains unexplained. Here we show that the existence of the Dead Zone self-consistently creates a density profile favorable to the Rossby Wave Instability of Lovelace et al. (1999). This instability will create and sustain Rossby vortices in the disk which could lead to enhanced planet formation.

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