Testing for an attractor in the solar wind flow

Details Testing for an attractor in the solar wind flow Testing for an attractor in the solar wind flow

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phyd..122..254m&link_type=abstract

Physica D: Nonlinear Phenomena, Volume 122, Issue 1-4, p. 254-264.

Physics

Plasma Physics

20

Nonlinear Plasma Physics, Solar Wind, Signal Processing, Turbulence

Scientific paper

We analyse a time series of velocity fluctuations of the low-speed stream of the solar wind measured by the Helios spacecraft in the inner heliosphere. We use moving average and singular-value decomposition filters to give a faithful representation of the solar wind nonlinear behaviour. We have supported our previous result that trajectories describing the system in the inertial manifold of phase space can asymptotically approach the attractor of low-dimension. The obtained characteristics of the attractor are significantly different from that of the surrogate data. Thus these results suggest that the inner heliosphere is nonlinear and possibly a deterministic chaotic system.

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