2023
DOI: 10.1016/j.asr.2022.10.008
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The characteristics of flare- and CME-productive solar active regions

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Cited by 9 publications
(3 citation statements)
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“…A future step would involve studying the characteristics of injection events on a larger sample of active regions, with no limitation on the evolutionary stage, and exploring the association with imminent flaring and eruptive activity. This might contribute clues toward the prediction of flares and eruptions (i.e., CMEs), which is a key challenge in solar weather prediction (Kontogiannis 2023).…”
Section: Discussionmentioning
confidence: 99%
“…A future step would involve studying the characteristics of injection events on a larger sample of active regions, with no limitation on the evolutionary stage, and exploring the association with imminent flaring and eruptive activity. This might contribute clues toward the prediction of flares and eruptions (i.e., CMEs), which is a key challenge in solar weather prediction (Kontogiannis 2023).…”
Section: Discussionmentioning
confidence: 99%
“…Based on the classic Space-Weather HMI AR Patches (SHARP; Bobra et al 2014) descriptors calculated from vector and line-of-sight magnetograms, there have been numerous flare forecasting studies specifically targeted the forecasting of the M/X-class flares (Bobra & Couvidat 2015;Barnes et al 2016;Liu et al 2017;Huang et al 2018;Campi et al 2019;Zheng et al 2023). However, these previous studies are still not capable of providing a substantially better performance than climatological forecasts (Barnes et al 2016;Campi et al 2019), which implies that the most relevant physical parameters that facilitate the prediction of solar flares are still unknown (Aschwanden 2020;Kontogiannis 2023). In this study, we introduce the area of high photospheric magnetic free energy density (HED) as the proxy of AR core region and analyze 11 nonpotential parameters within HED areas of 323 ARs producing C-class and M/X-class flares.…”
Section: Introductionmentioning
confidence: 99%
“…It is well established that solar eruptions, especially CMEs, are the main driver of space-weather disturbances close to the Earth (e.g., Temmer 2021; Zhang et al 2021). Accordingly, a large body of research has been devoted to determining AR characteristics that would allow one to predict the occurrence of eruptions (at least in a probabilistic manner; see, e.g., the recent review by Kontogiannis 2023). Along with quantities such as the total AR flux, specific interest has been paid to the location and amount of magnetic shear along PILs, as this quantity is commonly regarded as a proxy for the free magnetic energy, and since strongly sheared PILs are often associated with eruptive activity (e.g., Schrijver 2009).…”
Section: Introductionmentioning
confidence: 99%