期刊
JOURNAL OF LOW TEMPERATURE PHYSICS
卷 145, 期 1-4, 页码 59-74出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-006-9241-5
关键词
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Spacecraft measurements made in the solar wind show velocity and magnetic fluctuations over a broad range of frequencies. These fluctuations possess many properties expected of fully developed turbulence. In this paper, a brief overview is given on turbulence in the inner (< 1UA) solar wind at low (< 1Hz) and high (> 1Hz) frequencies for which non linear dispersive effects dominate. Then, a discussion is given about recent theoretical results on anisotropy in magnetohydrodynamic (MHD) turbulence and their relevance for understanding the data at low frequency. Finally, I show that incompressible Hall MHD may give a multi-scale description of inner solar wind turbulence; in particular, the non-linear dispersive effects lead to a steepening of the magnetic fluctuation power law spectrum similar to what is observed at high frequency.
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