Spinning Dust Emission from Wobbling Grains: Important Physical Effects
  and Implications
  We review major progress on the modeling of electric dipole emission from
rapidly spinning tiny dust grains, including polycyclic aromatic hydrocarbons
(PAHs). We begin by summarizing the original model of spinning dust proposed by
Draine and Lazarian and recent theoretical results improving the Draine and
Lazarian model. The review is focused on important physical effects that were
disregarded in earlier studies for the sake of simplicity and recently
accounted for by us, including grain wobbling due to internal relaxation,
impulsive excitation by single-ion collisions, the triaxiality of grain shape,
charge fluctuations, and the turbulent nature of astrophysical environments.
Implications of the spinning dust emission for constraining physical properties
of tiny dust grains and environment conditions are discussed. We discuss the
alignment of tiny dust grains and possibility of polarized spinning dust
emission. Suggestions for constraining the alignment of tiny grains and
polarization of spinning dust emission are also discussed.
