000007704 001__ 7704
000007704 005__ 20260105155931.0
000007704 037__ $$aPOSTER-2026-0012
000007704 100__ $$aFrench, Ryan 
000007704 245__ $$aSolar Orbiter observations of small-scale ribbon structures during a solar flare
000007704 260__ $$c2025
000007704 269__ $$c2025-06-08
000007704 520__ $$aWe present fast cadence and high resolution observations of flare ribbons from the Solar Orbiter Extreme Ultraviolet Imager (EUI). Utilizing the short-exposure observations from the EUI High Resolution Imager in the EUV (HRIEUV), we find small-scale bead-like kernel structures propagating along the end of the flare ribbon during the impulsive phase of an M-class solar flare. These bead structures are dynamic, with well-resolved spatial separations of ≈800 kilometers – well below the observable limit of full-disk solar imagers. We analyze the evolution of the plane-of-sky velocity, size and separation of the flare ribbon structures, as well as the power distribution of the features along the ribbon. Finally, we compare these observables with different models of magnetic reconnection instabilities, to probe the processes triggering flare onset.
000007704 594__ $$aSTCE
000007704 6531_ $$aSolar Orbiter
000007704 6531_ $$aEUI
000007704 6531_ $$aflare
000007704 700__ $$aKazachenko, Maria 
000007704 700__ $$aBerghmans, David 
000007704 700__ $$aD'Huys, Elke 
000007704 700__ $$aDominique, Marie 
000007704 700__ $$aTalpeanu, Dana
000007704 773__ $$t246th Meeting of the American Astronomical Society, Anchorage/Alaska
000007704 8560_ $$fdavid.berghmans@ksb-orb.be
000007704 85642 $$ahttps://aas.org/meetings/aas246/program
000007704 85642 $$ahttps://ui.adsabs.harvard.edu/abs/2025AAS...24622403F/abstract
000007704 980__ $$aCPOSTER