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Evolution of the solar wind proton temperature anisotropy from 0.3 to 2.5 AU

Maksimovic, Milan; Landi, Simone; Hellinger, Petr +5 more

We report an analysis of the proton temperature anisotropy evolution from 0.3 to 2.5 AU based on the Helios and Ulysses observations. With increasing distance the fast wind data show a path in the parameter space (β _{$\parallel$ p} , T _{$\perp$ p} /T _{$\parallel$ p} ). The first part of the trajectory is well describe…

Banana-polarized solitons in anisotropic plasmas related to Ulysses observations

Dubinin, E.; Sauer, K.; Baumgärtel, K. +1 more

Localized magnetic compressions associated with a rotation in the magnetic field direction have recently been reported after surveying Ulysses high-resolution data. Although the observed structures have similarities to usual Hall-MHD solitons, the banana-type polarization of the described rare events is a decisive signature which counts against su…