000008041 001__ 8041
000008041 005__ 20260302110205.0
000008041 0247_ $$2DOI$$a  10.1007/s11207-025-02596-9
000008041 037__ $$aSCART-2026-0128
000008041 100__ $$aMajury, Luke
000008041 245__ $$aEruption-Related Ultraviolet Irradiance Enhancements Associated with Flares
000008041 260__ $$c2026
000008041 520__ $$aLarge solar flares (GOES M-class or higher) are usually associated with eruptions of material. However, when considering flare irradiance enhancements and dynamics such as chromospheric evaporation, potential contributions from erupted material have historically been neglected. We analyse nine eruptive M- and X-class flares from 2024 to early 2025, quantifying the relative contributions of erupted material to irradiance enhancements during the events. SDO/AIA images from four different channels had ribbon and eruption irradiance contributions separated using a semi-automated masking method. The sample-averaged percentages of excess radiated energy by erupted material over the impulsive phase were 10+4−4%, 24+14−14%, 21+14−10% and 13+6−9% for the 131Å, 171Å, 304Å and 1600Å channels, respectively. For three events that were studied in further detail, HXR imaging showed little to no signatures of nonthermal heating within the eruptions. Our results suggest that erupted material can be a significant contributor to UV irradiance enhancements during flares, with possible heating mechanisms including nonthermal particle heating, Ohmic heating, or dissipation of MHD waves. Future work may clarify the heating mechanism and evaluate the impact of eruptions on spectral variability, particularly in Sun-as-a-star and stellar flare observations.
000008041 594__ $$aSTCE
000008041 6531_ $$asolar flares
000008041 700__ $$aDominique, Marie
000008041 700__ $$aMilligan, Ryan
000008041 700__ $$aTalpeanu, Dana-Camelia
000008041 700__ $$aDammasch, Ingolf
000008041 700__ $$aBerghmans, David 
000008041 773__ $$cid.5$$n1$$pSolar Physics$$v301$$y2026
000008041 8560_ $$fdavid.berghmans@ksb-orb.be
000008041 85642 $$ahttps://arxiv.org/abs/2512.15639
000008041 905__ $$apublished in
000008041 980__ $$aREFERD