Here in Nice, several people in the wake of Uriel Frisch and his students, and students of his students, yesterday and today - have used their wits to crack out the problem both in the kinematic and in the nonlinear cases, and of MHD turbulence using a combination of analytical and numerical tools, the latter mostly with M. Meneguzzi in Saclay and Helene Politano here. In fact, it seems active even when deemed quiet, we witnessed together in the cold of a finnish winter a magnificent aurora, when the sun was at a minimum. Another significant claim to fame for your work came quite early in your career with your explanation for the solar wind. In the mid-fifties the corona, very tenuous and at several millions Kelvin, was quite a mystery. You realised that gravity was not sufficient to hold it and that it would expand outward.
Fame needs help, the baraka, that is luck.
This solution was not unique, the sun is quite a typical star and many stars were discovered to have winds. In fact many astrophysical objects spurt out matter, sometimes at great speeds and in very collimated impressive spectacular jets. Magnetic fields again are the most likely candidates for collimation, and molecular outflows when seen at high resolution as we heard two weeks ago may in fact be collimated as well, but can nevertheless be considered as part of a wind, a more dynamical earlier version possibly of the wind, stars sending out high speed bullets, the Herbig Haro objects. Here again several people at OCA work on some aspects of this problem, on wind, on T-Tauri stars and the interstellar medium at large. You have also contributed to an understanding of cosmic rays in the Galaxy.