The evolution of solar wind strahl with heliospheric distance

• Published in: Journal of geophysical research. Space physics Vol. 122; no. 4; pp. 3858 - 3874
• Main Authors: Graham, G. A., Rae, I. J., Owen, C. J., Walsh, A. P., Arridge, C. S., Gilbert, L., Lewis, G. R., Jones, G. H., Forsyth, C., Coates, A. J., Waite, J. H.
• Format: Journal Article
• Language: English
• Published: 01.04.2017
• Subjects: cassini; electrons; interplanetary; solar wind; suprathermal; wave‐particle

Field‐aligned beams of suprathermal electrons, known as “strahl,” are a frequently observed constituent of solar wind plasma. However, the formation and interplanetary evolution of the strahl electron populations has yet to be fully understood. As strahl electrons travel away from the Sun, they move...