Solar Wind Turbulence from 1 to 45 AU

We review five recent publications that extend magnetic turbulence studies that were pioneered using data from 1 AU to now include Voyager observations from 1977 through 1990 and 1 to 45 AU. We examine the spectral scale at which evidence of dissipation sets in and evaluate the spectral indices, anisotropies, polarizations, and spectral transfer of energy. We compare the latter to predictions from transport theory and the rate of energy injection through wave excitation by newborn interstellar pickup ions. While many of our results agree with conclusions from 1 AU, we find that the magnetic spectral anisotropy that relates to the underlying anisotropy of the wave vectors exceeds theoretical predications for reasons we are unable to determine. We also establish that wave energy excitation by newborn interstellar pickup H+ forms the dominant energy source driving the turbulence beyond 10 AU.