  Recent discovery of the afterglow emission from short gamma-ray bursts
suggests that binary neutron star or black hole-neutron star binary mergers are
the likely progenitors of these short bursts. The accretion of neutron star
material and its subsequent ejection by the central engine implies a
neutron-rich outflow. We consider here a neutron-rich relativistic jet model of
short bursts, and investigate the high energy neutrino and photon emission as
neutrons and protons decouple from each other. We find that upcoming neutrino
telescopes are unlikley to detect the 50 GeV neutrinos expected in this model.
For bursts at z~0.1, we find that GLAST and ground-based Cherenkov telescopes
should be able to detect prompt 100 MeV and 100 GeV photon signatures,
respectively, which may help test the neutron star merger progenitor
identification.
