  Advances in X-ray and gamma-ray astronomy have opened a new window on our
universe and revealed a wide variety of binaries composed of a compact object
and a Be star. In Be X-ray binaries, a neutron star accretes the Be disk and
truncates it through tidal interactions. Such systems have important X-ray
outbursts, some related to the disk structure. In other systems, strong gamma
ray emission is observed. In gamma-ray binaries, the neutron star is not
accreting but driving a highly relativistic wind. The wind collision region
presents similarities to colliding wind binaries composed of massive stars. The
high energy emission is coming from particles being accelerated at the
relativistic shock. I will review the physics of X-ray and gamma-ray binaries,
focusing particularly on the recent developments on gamma-ray binaries. I will
describe physical mechanisms such as relativistic hydrodynamics, tidal forces
and non thermal emission. I will highlight how high energy astrophysics can
shed a new light on Be star physics and vice-versa. A video of the talk can be
found at
http://activebstars.iag.usp.br/index.php/talk-conference-recordings/bestars-2014-in-london-ontario/session-6/video/astrid-lamberts-interacting-binaries-be-stars-and-high-energy-astrophysics.
