  Many of the stars in the Galaxy were formed in binary systems. The widest of
these can eventually become disrupted due to a combination of kicks from
passing stars and the Galactic tidal field. If the Galactic disk were purely
axisymmetric, the stars from a disrupted binary system would slowly drift apart
on nearly identical orbits. We study how the existence of non-axisymmetric
structures, such as a rigidly rotating bar, can greatly alter this picture. In
particular, we show how the orbital dynamics near the resonances sourced by
these perturbations can create local fluctuations in the distribution of
disrupted binary separations. We simulate the evolution of wide binary systems
embedded in gravitational potentials with rotating galactic bars, and show how
features and fluctuations in the distribution of disrupted binaries can be used
to locate bar resonances and constrain the bar's pattern speed and amplitude.
