Wygant, J. R., A. Keiling, C. A. Cattell, M. Johnson, R. L. Lysak, M. Temerin, F. S. Mozer, C. A. Kletzing, J. D. Scudder, W. Peterson, C. T. Russell, G. Parks, M. Brittnacher, G. Germany, and J. Spann, Polar spacecraft based comparisons of intense electric fields and Poynting flux near and within the plasma sheet-tail lobe boundary to UVI images: An energy source for the aurora, Journal of Geophysical Research, 105, 18,675-18,692 (2000) (ADS)
(click on the image for a larger version)
Date: 2009 February 03
Update: 2019 December 04
This cartoon comes from a major paper (judged from length of title) on a then-new paradigm in auroral physics, namely the recognition of Alfvénic Poynting fluxes as a mechanism for energy transport through the magnetosphere. These ideas are in the process of oozing into the solar corona as a possible aid in understanding flares and CMEs. The physics might be present, though not explicit, in this idea for coronal heating.
Note here the unipolar structure. Solar physicists tend to think of loops, but here is only half a loop. Is that for clarity or because the physics is not really properly thought of as loops with strictly conjugate footpoint processes? This cartoon is from geophysics, and the "POLAR S/C" refers to the POLAR [1] spacecraft. Too bad we can't (yet) fly spacecraft through the tops of flare loops!
[1] POLAR