Abstract

TeV-emitting binaries are a small class within the gamma-ray source catalog, consisting of just a few objects. The underlying physical processes leading to the observed VHE emission are not well understood, with even the most basic features of these systems still subject to debate. Further progress requires long-term, multiwavelength observations across multiple orbital cycles, but such coverage can be difficult to obtain, due to long orbital periods and irregular emission patterns. We present here new VERITAS observations of the binary systems visible from the northern hemisphere, including LS I +61 303 and HESS J0632+057, carried out with higher sensitivity and denser temporal coverage than previous observations. The gamma-ray results and their astrophysical implications are discussed in the context of contemporaneous observations with Swift and Fermi at X- and gamma-ray energies.