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Interstellar Turbulence. I. Retrieval of Velocity Field Statistics
We demonstrate the capability of Principal Component Analysis (PCA) as applied by Heyer & Schloerb (1997) to extract the statistics of turbulent interstellar velocity fields as measured by the energy spectrum, E(k) ∼ k −β . Turbulent velocity and density fields with known statistics are generated from fBm simulations. These fields are translated to the observational domain, T(x,y,v), considering the excitation of molecular rotational energy levels and radiative transfer. Using PCA and thedoi:10.1086/338031 fatcat:bcgj6fw5avddnes6b575iy2jge