Density Spectrum in the Diffuse Interstellar Medium and Solar Wind

Details Density Spectrum in the Diffuse Interstellar Medium and Solar Wind Density Spectrum in the Diffuse Interstellar Medium and Solar Wind

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...602l..29d&link_type=abstract

The Astrophysical Journal, Volume 602, Issue 1, pp. L29-L32.

Astronomy and Astrophysics

Astronomy

10

Ism: General, Methods: Numerical, Plasmas, Sun: Solar Wind, Turbulence

Scientific paper

Inertial range turbulence properties are investigated for nearly incompressible density fluctuations using two-dimensional nonlinear fluid simulations. We find that density fluctuations behave as a passive scalar and do not satisfy the pseudosound approximation. As a result, the density fluctuations follow a Kolmogorov-like spectrum, and this is a possible explanation for the observed diffuse interstellar and solar wind density fluctuation spectrum.

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