Editing Appendix/Ramblings/ForPaulFisher (section)

==Overview of Dissertation==
[https://digitalcommons.lsu.edu/gradschool_disstheses/6940/ Paul Fisher's (1999) doctoral dissertation] (accessible via the LSU Digital Commons) is titled, ''Nonaxisymmetric Equilibrium Models for Gaseous Galaxy Disks.''  Its abstract reads, in part:

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<font color="darkgreen">Three-dimensional hydrodynamic simulations show that, in the absence of self-gravity, an axisymmetric, gaseous galaxy disk whose angular momentum vector is initially tipped at an angle, <math>~i_0</math>, to the symmetry axis of a fixed spheroidal dark matter halo potential does not settle to the equatorial plane of the halo.  Instead, the disk settles to a plane that is tipped at an angle, <math>~\alpha = \tan^{-1}[q^2 \tan i_0]</math>, to the equatorial plane of the halo, where <math>~q</math> is the axis ratio of the halo equipotential surfaces.  The equilibrium configuration to which the disk settles appears to be flat but it exhibits distinct nonaxisymmetric features.  .</font>
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All three-dimensional hydrodynamic simulations employ [https://ui.adsabs.harvard.edu/abs/1980ApJ...238..103R/abstract Richstone's (1980)] time-independent "axisymmetric logarithmic potential" that is prescribed by the expression,
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  <td align="right">
<math>~\Phi(x, y, z)</math>
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  <td align="center">
<math>~=</math>
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  <td align="left">
<math>~
\frac{v_0^2}{2}~ \ln\biggl[x^2 + y^2 + \frac{z^2}{q^2} \biggr] \, .
</math>
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</tr>
</table>