Composite solitons in 3He-A in the presence of superflow

We have studied theoretically the effect of superflow on the composite solitons in 3He-A for Hparallelv/sub s/ and Hperpendicularv/sub s/. Here H is a static magnetic field and v/sub s/ is the superfluid velocity. The domain-wall energy as well as related NMR satellite frequencies are determined as functions of v/sub s/. In the parallel geometry (Hparallelv/sub s/), we predict hysteresis in the satellite frequencies when the superfluid velocity v/sub s/ is changed, due to the existence of two branches of stable textures. In both configurations there exist critical velocities v/sub s/(< or approx. =l mm/sec), at which the domain-wall energy becomes negative indicating the global instability of the uniform texture