  We consider a spin-1 Bose-Einstein condensate with Rashba spin-orbit coupling
and dipole-dipole interaction confined in a cigar-shaped trap. Due to the
combined effects of spin-orbit coupling, dipole-dipole interaction, and trap
geometry, the system exhibits a rich variety of ground-state spin structures,
including twisted spin vortices. The ground-state phase diagram is determined
with respect to the strengths of the spin-orbit coupling and dipole-dipole
interaction.
