The Orbits of the Gamma-ray Binaries LS I +61 303 and LS 5039

Christina Aragona, M. Virginia McSwain, Erika D. Grundstrom +5

LS I +61 303 and LS 5039 are two of only a handful of known high mass X-ray binaries (HMXBs) that exhibit very high energy emission in the MeV-TeV range, and these "gamma-ray binar…