Density spectrum in the diffuse interstellar medium and solar wind

被引：14

作者：

Dastgeer, S ^{[1
]}

Zank, GP ^{[1
]}

机构：

[1] Univ Calif Riverside, Inst Geophys & Planetary Phys, Riverside, CA 92521 USA

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 602卷 / 01期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

ISM : general; methods : numerical; plasmas; solar wind; turbulence;

D O I：

10.1086/382275

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：L29 / L32

页数：4

共 21 条

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