| Description | Sees that Newkirk and his colleagues have been very successful in plotting Coronal fields. He is very interested in this and would appreciate any reprints of this work. He is enclosing some reprints which, though old, refer to the theory of such extrapolation, Allso, he recals that he spoke about 'Open and Closed Magnetic Regions on the Sun' at the Boulder Conference four or five years ago, but cannot lay his hands on any proceedings of it. Asks if this was published. |