Statistics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..357...81i&link_type=abstract
The Spitzer Space Telescope: New Views of the Cosmos ASP Conference Series, Volume 357, proceedings of the conference held 9-12
Statistics
Scientific paper
The density and velocity structure of the interstellar medium (ISM) must be understood to address many astrophysical problems. We summarize the spatial statistics of 24 μm emission for 10 diffuse fields in the Spitzer Galactic First Look Survey. In almost all regions we analyzed, the x and y spectral indices are nearly equal, implying that the density structure in emitting regions is isotropic. All but one spectral index we measure is shallower than the index predicted by the theory of tet{kol41}. We discuss the implications of our results in the light of recent simulations of magnetized and non-magnetized hydrodynamic turbulence.
Carey Sean Joseph
Ingalls James G.
Noriega-Crespo Alberto
Reach William T.
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