  The photo-disintegration of cosmic ray nuclei by starlight leads to the
production of secondary antineutrinos. We have assumed that the flux of the
ultrahigh energy cosmic ray nuclei near the Galactic plane region is the same
as that observed near the earth and calculated the antineutrino flux produced
from their photo-disintegration. The IceCube detector has measured the
neutrino/antineutrino flux in the TeV-PeV energy range. Our calculated
secondary antineutrino flux in the energy range of 10-100 TeV is found to be
much less compared to the flux detected by the IceCube collaboration. The upper
limit on the intensity of the radiation field in the extragalactic medium is
much lower than that near the Galactic center. If we extend our formalism to
the extragalactic medium the contribution from the photo-disintegration of
ultrahigh energy cosmic ray heavy nuclei remains insignificant due to their
very low flux.
