  Previous studies have concluded that the Hall magnetic field structures
generated during magnetic reconnection are carried away by kinetic Alfv\'{e}n
waves (KAW). Here we apply a kinetic simulation with an ion/electron mass ratio
closer to its natural value and find that much-reduced damping rates permit the
KAW to convert into shear Alfv\'{e}n waves (SAW). For magnetotail reconnection
these SAW provides efficient transport of wave energy, enhancing the energy
input for the Aurora Borealis by orders of magnitude above previous estimates.
