  We characterize and present the details of the follow-up method used on the
most significant outliers of the Hough Einstein@Home all-sky search for
continuous gravitational waves arXiv:1207.7176. This follow-up method is based
on the two-stage approach introduced in arXiv:1303.2471, consisting of a
semicoherent refinement followed by a fully coherent zoom. We quantify the
efficiency of the follow-up pipeline using simulated signals in Gaussian noise.
This pipeline does not search beyond first-order frequency spindown, and
therefore we also evaluate its robustness against second-order spindown. We
present the details of the Hough Einstein@Home follow-up (arXiv:1207.7176) on
three hardware-injected signals and on the 8 most significant outliers of
unknown origin.
