Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Velocity and density spectra of the Small Magellanic Cloud   This paper reports results on the statistical analysis of HI turbulence in
the Small Magellanic Cloud (SMC). We use 21 cm channel maps, obtained with the
Australia Telescope Compact Array and the Parkes telescope, and analyze the
spectrum of observed intensity fluctuations as a function of the velocity slice
thickness. We confirm predictions by Lazarian & Pogosyan (2000) on the change
of the power law index and establish the spectra of 3-D density and velocity.
The obtained spectral indices, -3.3 and -3.4, are slightly more shallow than
the predictions for the Kolmogorov spectrum. This contrasts to the predictions
for the shock-type spectra that are steeper than the Kolmogorov one. The nature
of the energy injection in the SMC is unclear as no distinct energy injection
scales are observed up to the entire scale of the SMC.

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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: math
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol