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- W3106156341 abstract "We study the physical mechanism of a major X-class solar flare that occurred in the super NOAA active region (AR) 12192 using data-driven numerical magnetohydrodynamic (MHD) modeling complemented with observations. With the evolving magnetic fields observed at the solar surface as bottom boundary input, we drive an MHD system to evolve self-consistently in correspondence with the realistic coronal evolution. During a two-day time interval, the modeled coronal field has been slowly stressed by the photospheric field evolution, which gradually created a large-scale coronal current sheet, i.e., a narrow layer with intense current, in the core of the AR. The current layer was successively enhanced until it became so thin that a tether-cutting reconnection between the sheared magnetic arcades was set in, which led to a flare. The modeled reconnecting field lines and their footpoints match well the observed hot flaring loops and the flare ribbons, respectively, suggesting that the model has successfully reproduced the macroscopic magnetic process of the flare. In particular, with simulation, we explained why this event is a confined eruption—the consequence of the reconnection is a shared arcade instead of a newly formed flux rope. We also found a much weaker magnetic implosion effect compared to many other X-class flares." @default.
- W3106156341 created "2020-11-23" @default.
- W3106156341 creator A5001420388 @default.
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- W3106156341 creator A5051547058 @default.
- W3106156341 creator A5054542928 @default.
- W3106156341 date "2016-08-31" @default.
- W3106156341 modified "2023-10-14" @default.
- W3106156341 title "HOW DID A MAJOR CONFINED FLARE OCCUR IN SUPER SOLAR ACTIVE REGION 12192?" @default.
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- W3106156341 doi "https://doi.org/10.3847/0004-637x/828/1/62" @default.
- W3106156341 hasPublicationYear "2016" @default.
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