Prof. Opher worked as well on how magnetic perturbations, known as Coronal Mass Ejections, evolve, drive shocks and impact Earth and exo-planets.
Selection of Prof. Opher’s most significant papers on this subject:
Vidotto, A. A., Opher, M., Jatenco-Pereira, V., and Gombosi, T. I., “Simulations of Winds of Weak-Lined T Tauri Stars: The Magnetic Field Geometry and The Influence of the Wind on Giant Planet Migration”, The Astrophysical Journal, Vol. 703, 1734 (2009).