An active role for magnetic fields in solar flares.
Rust, D. M., An active role for magnetic fields in solar flares., Sol. Phys., 47, 21-40 (1976) (ADS)
(click on the image for a larger version)
Here we see a first suggestion of the flare/CME triggering by emerging
flux adjacent to a filament channel.
This picture, motivated by Rust's own observational work and by that of
Feynman and Martin (1995JGR...100.3355F), has led to a great deal of
MHD simulation over the decades.
One of the murky questions here is the exact meaning of "triggering".
Here and in subsequent modeling it has to do with magnetic reconnection
as the initiation of the instability, but this is a very fuzzy
concept - which "field line" is the is the straw that broke the camel's
back (likening a filament channel to a dromedary)?
Interpreted more broadly, the emerging flux with or without reconnection
certainl represents an evolution of the coronal structure, possibly leading
to metastability.
At time of archiving, there were no fewer than 16 later cartoons extolling
the virtues of flux emergence:
Heyvaerts et al. for an early
influential one, and Yiming Wang's
for a more recent one.
Here we see a first suggestion of the flare/CME triggering by emerging flux adjacent to a filament channel. This picture, motivated by Rust's own observational work and by that of Feynman and Martin (1995JGR...100.3355F), has led to a great deal of MHD simulation over the decades. One of the murky questions here is the exact meaning of "triggering". Here and in subsequent modeling it has to do with magnetic reconnection as the initiation of the instability, but this is a very fuzzy concept - which "field line" is the is the straw that broke the camel's back (likening a filament channel to a dromedary)? Interpreted more broadly, the emerging flux with or without reconnection certainl represents an evolution of the coronal structure, possibly leading to metastability. At time of archiving, there were no fewer than 16 later cartoons extolling the virtues of flux emergence: Heyvaerts et al. for an early influential one, and Yiming Wang's for a more recent one.