An Exact, Three-Dimensional, Time-Dependent Wave Solution in Local Keplerian Flow
نویسندگان
چکیده
We present an exact three-dimensional wave solution to the shearing sheet equations of motion. The existence of this solution argues against transient amplification as a route to turbulence in unmagnetized disks. Moreover, because the solution covers an extensive dynamical range in wavenumber space, it is an excellent test of the dissipative properties of numerical codes. Subject headings: accretion, accretion disks; instabilities; solar system: formation
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N ov 2 00 6 Comments on “ An Exact , Three - Dimensional , Time - Dependent Wave Solution in Local Keplerian
We analyze the scepticism on the hydrodynamic turbulence in Keplerian astrophysical disks expressed in Balbus and Hawley 2006 and show the failure of arguments of the paper. Recently Balbus and Hawley 2006 (BH06) have shown time-dependent three-dimensional nonlinear wave solution when considering a local Keplerian flow. Authors have demonstrated that the linear wave solution derived in Johnson ...
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