Sequential Chomospheric Brightening: An Automated Approach to Extracting Physics from Ephemeral Brightening
Abstract
We make a comparison between small scale chromospheric brightenings and energy release processes through examining the temporal evolution of sequential chromospheric brightenings (SCBs), derive propagation velocities, and propose a connection of the small-scale features to solar flares. Our automated routine detects and distinguishes three separate types of brightening regularly observed in the chromosphere: plage, flare ribbon, and point brightenings. By studying their distinct dynamics, we separate out the flare-associated bright points commonly known as SCBs and identify a propagating Moreton wave. Superimposing our detections on complementary off-band images, we extract a Doppler velocity measurement beneath the point brightening locations. Using these dynamic measurements, we put forward a connection between point brightenings, the erupting flare, and overarching magnetic loops. A destabilization of the pre-flare loop topology by the erupting flare directly leads to the SCBs observed.
- Publication:
-
Second ATST-EAST Meeting: Magnetic Fields from the Photosphere to the Corona.
- Pub Date:
- December 2012
- DOI:
- 10.48550/arXiv.1203.1277
- arXiv:
- arXiv:1203.1277
- Bibcode:
- 2012ASPC..463..267K
- Keywords:
-
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 8 Pages, 4 Figures, ATST-EAST Workshop