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2014MNRAS.442.1451B - Mon. Not. R. Astron. Soc., 442, 1451-1469 (2014/August-1)
An observational method to measure the relative fractions of solenoidal and compressible modes in interstellar clouds.
BRUNT C.M. and FEDERRATH C.
Abstract (from CDS):
We introduce a new method for observationally estimating the fraction of momentum density (ρv) power contained in solenoidal modes (for which ∇. ρv = 0) in molecular clouds. The method is successfully tested with numerical simulations of supersonic turbulence that produce the full range of possible solenoidal/compressible fractions. At present, the method assumes statistical isotropy, and does not account for anisotropies caused by (e.g.) magnetic fields. We also introduce a framework for statistically describing density-velocity correlations in turbulent clouds.
Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)
Journal keyword(s): turbulence - methods: statistical - ISM: clouds - ISM: kinematics and dynamics
Simbad objects: 3
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