Free Access

Fig. 1.


Overview of solar wind data at the perihelion of Helios1 in 1975. (a) Radial component of the velocity; (b) radial component of the magnetic field; (c) proton density; (d) proton temperature: T (red dashed line) and T (blue solid line); (e) absolute value of the 30 min averaged cross-helicity; (f) radial distance. The coloured bands denote the three different regimes of solar wind, namely Alfvénic slow (green), fast (orange), and non-Alfvénic slow (violet) winds.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.