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Table 2
Symbols.
| Symbol | Meaning |
|---|---|
| G | Gravitational constant |
| MP | Planet’s mass |
| Ms | Mass of perturbing satellite |
| as | Semimajor axis of perturbing satellite |
| es | Eccentricity of perturbing satellite |
| Ts | Linear inviscid satellite torque |
| ϕs | Satellite potential |
| Lvisc | Viscous angular momentum luminosity |
| Ω | Kepler frequency |
| ΩL | Kepler frequency at r = rL |
| κ | Epicyclic frequency |
| ΩZ | Vertical frequency of ring particles |
| x = r − rL | Radial coordinate |
 |
Scaled radial coordinate |
| t | Time |
| ωs | Satellite forcing frequency in the frame rotating with ΩL |
 |
Satellite forcing frequency in the inertial frame |
| ω | Complex frequency of overstable waves |
| σ | Surface mass density |
 |
Scaled surface mass density |
| τdyn | Dynamical optical depth |
| u, v | Planar velocity components |
| ϕd | Self-gravity potential |
| ϕp | Planetary potential |
 |
Effective isothermal velocity dispersion |
| ν0 | Ground state kinematic shear viscosity |
| p | Isotropic pressure |
| η | Dynamic shear viscosity |
| β | Viscosity parameter |
| γ | Constant ratio of bulk and shear viscosity |
 |
Pressure tensor |
 |
Inverse ground state Toomre-parameter |
 |
Phase variable of a fluid streamline |
| q | Nonlinearity parameter of a fluid streamline |
| Δ | Phase angle of a fluid streamline |
| a | Semimajor axis of a fluid streamline |
| e | Eccentricity of a fluid streamline |
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