Tiny, bright flashes on the sun could help scientists predict solar flares

Possible reasons they didn't see this before:
1) Predominately at a particular wavelength
2) Short lived
3) Small scale

From the abstract of the article:
"The 94 Å filter data provide the most parameters with discriminating power, with indications that it benefits from sampling multiple physical regimes. In particular, classification success using higher-order moments of running-difference images indicate a propensity for flare-imminent regions to display short-lived small-scale brightening events. "

Previously known relations to flare strength:
1)Total emission performs well
2) Steeply increasing/decreasing brightness performs well
3) Active region size performs well
4) Mean brightness does not perform well

"Total emission can perform notably, as can steeply increasing or decreasing brightness, although mean brightness measures do not, demonstrating the well-known active-region size/flare productivity relation."

Properties of Flare-imminent versus Flare-quiet Active Regions from the Chromosphere through the Corona. II. Nonparametric Discriminant Analysis Results from the NWRA Classification Infrastructure (NCI) - IOPscience
Last edited:
  • Like
Reactions: Helio

Latest posts