Sign singularity and flares in solar active region NOAA 11158
作者： L. Sorriso-Valvo , G. De Vita , M. D. Kazachenko , S. Krucker , L. Primavera
DOI: 10.1088/0004-637X/801/1/36
关键词: Time evolution 、 Astrophysics 、 Singularity 、 Physics 、 Sign (mathematics) 、 Spectral index 、 Flux 、 Event (particle physics) 、 Scaling 、 Helicity
摘要: Solar Active Region NOAA 11158 has hosted a number of strong flares, including one X2.2 event. The complexity current density and helicity are studied through cancellation analysis their sign-singular measure, which features power-law scaling. Spectral is also performed, revealing the presence two separate scaling ranges with different spectral index. time evolution parameters discussed. Sudden changes exponents at large correlation EUV X-ray flux, suggest that eruption flares can be linked to small scale properties structures.
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