Ion-temperature anisotropies and the structure of the solar wind

Aharon Eviatar*, Michael Schulz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The introduction of a kinetic equation for the interplanetary medium makes possible a quantitative test of several recently proposed mechanisms for limiting ion-temperature anisotropies in the solar wind. The results suggest that Coulomb collisions and an ion-cyclotron instability contribute comparably to the establishment of this limit under solar-wind conditions usually observed. Conditions favorable to the firehose instability seem to occur only on rare occasions.

Original languageEnglish
Pages (from-to)321-332
Number of pages12
JournalPlanetary and Space Science
Issue number3
StatePublished - Mar 1970


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