Heyvaerts, J., E. R. Priest, and D. M. Rust, An emerging flux model for the solar phenomenon., ApJ, 216, 123-137 (1977) (ADS)
(click on the image for a larger version)
An all-time classic among flare cartoons: emerging flux presses into overlying field,
and then something happens.
Intuitively, one would have to ask why the overlying field does not simply expand in
response to the new pressure; but if it were to reconnect somehow, then...
possibly... boola, boola, blunko! A flare!
Or one might also ask why it had not already reconnected, since we believe
that the coronal field is space-filling and therefore always in contact.
So the additional bump must be a soft and elastic bump, based on our knowledge
of the vertical velocity of flux emergence.
Nevertheless, Archivist bias aside, one should really look at this prophetic paper.
It has all the right cartoons, for one thing, but even
better it anticipated later ideas about X-ray
jets,
type III burst
sources, and conceivably even the "impulsive" prompt
SEP events.
It allows for open fields and hints at a backing-away from the simple bipolar geometry
of CSHKP, which it also discusses.
An all-time classic among flare cartoons: emerging flux presses into overlying field, and then something happens. Intuitively, one would have to ask why the overlying field does not simply expand in response to the new pressure; but if it were to reconnect somehow, then... possibly... boola, boola, blunko! A flare! Or one might also ask why it had not already reconnected, since we believe that the coronal field is space-filling and therefore always in contact. So the additional bump must be a soft and elastic bump, based on our knowledge of the vertical velocity of flux emergence.
Nevertheless, Archivist bias aside, one should really look at this prophetic paper. It has all the right cartoons, for one thing, but even better it anticipated later ideas about X-ray jets, type III burst sources, and conceivably even the "impulsive" prompt SEP events. It allows for open fields and hints at a backing-away from the simple bipolar geometry of CSHKP, which it also discusses.