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Nonlinear Propagation of Planet-Generated Tidal WavesThe propagation and evolution of planet-generated density waves in protoplanetary disks is considered. The evolution of waves, leading to shock formation and wake dissipation, is followed in the weakly nonlinear regime. The 2001 local approach of Goodman and Rafikov is extended to include the effects of surface density and temperature variations in the disk as well as the disk cylindrical geometry and nonuniform shear. Wave damping due to shocks is demonstrated to be a nonlocal process spanning a significant fraction of the disk. Torques induced by the planet could be significant drivers of disk evolution on timescales of approx. 10(exp 6)-10(exp 7) yr, even in the absence of strong background viscosity. A global prescription for angular momentum deposition is developed that could be incorporated into the study of gap formation in a gaseous disk around the planet.
Document ID
20040139876
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Rafikov, R. R. (Princeton Univ. Observatory NJ, United States)
Date Acquired
August 22, 2013
Publication Date
April 20, 2002
Publication Information
Publication: The Astrophysical Journal
Volume: 569
Issue: 2 Pt 1
ISSN: 0004-637X
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-10456
CONTRACT_GRANT: NAG5-8385
Distribution Limits
Public
Copyright
Other