# The weak friction approximation and tidal evolution in close binary systems

@article{Alexander1973TheWF, title={The weak friction approximation and tidal evolution in close binary systems}, author={M. E. Alexander}, journal={Astrophysics and Space Science}, year={1973}, volume={23}, pages={459-510} }

The aim of this paper is to study the dynamical problem of tidal friction in a binary system consisting of deformable components, with the restriction that the angle of lag or advance of the tidal distortion with respect to the direction of the disturbing companion is small. The fractional distortion of the bodies due to rotation and tidal interaction is also treated as a first-order small quantity, and terms up to the fourth harmonic in the tidal potential are retained. In this linear…

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