  We investigate a radial spin hedgehog, analogous to the Dirac monopole, in an
optically trapped atomic spin-1 Bose-Einstein condensate. By joining together a
monopole-antimonopole pair, we may form a vortex line with free ends. We
numerically simulate the three-dimensional dynamics and imaginary time
relaxation of these structures to nonsingular textures and show they can be
observable for realistic experimental parameters.
