Fluctuations, Dissipation and Heating in the Corona

摘要: Mechanisms for the deposition of heat in lower coronal plasma are discussed, emphasizing recent attempts to reconcile fluid and kinetic perspectives. Structures at MHD scales believed act as reservoirs fluctuation energy, which turn drive a nonlinear cascade process. Kinetic processes smaller spatial more rapid time scales. Cascade-driven contrasted with direct cyclotron absorption, this distinction is echoed contrast between frequency wavenumber spectra fluctuations. Observational constraints also along estimates relative efficiency processes.