Physics – Plasma Physics
Scientific paper
Mar 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3405106a&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 5, CiteID L05106
Physics
Plasma Physics
5
Interplanetary Physics: Heliopause And Solar Wind Termination, Interplanetary Physics: Heliosphere/Interstellar Medium Interactions, Interplanetary Physics: Mhd Waves And Turbulence (2752, 6050, 7836), Space Plasma Physics: Solitons And Solitary Waves (4455), Space Plasma Physics: Nonlinear Phenomena (4400, 6944)
Scientific paper
We propose a solitary wave model for small scale magnetic structures observed in the solar wind and more recently in the Voyager 1 observations of the heliosheath. The model is based on the recent, fully nonlinear theory of solitary waves by McKenzie et al. (2001, 2004). Our solutions i.e., magnetic holes, humps, trains of holes and humps, are strongly nonlinear (70 to 80% change in the magnetic field at the centre), propagate at large angles (>60°) to the mean magnetic field and are well approximated by Gaussians. The structures are almost pressure balanced with an anti-correlation between the magnetic field and the plasma density, and no change in the magnetic vector across the structure. These features are consistent with observations of magnetic structures in the heliosheath.
Avinash Khare
Zank Gary P.
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