Magnetic Structure Producing X- and M-class Solar Flares in Solar Active Region 11158

ASTROPHYSICAL JOURNAL, 2013.

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摘要

We study the three-dimensional magnetic structure of the solar active region 11158, which produced one X-class and several M-class flares on 2011 February 13-16. We focus on the magnetic twist in four flare events, M6.6, X2.2, M1.0, and M1.1. The magnetic twist is estimated from the nonlinear force-free field extrapolated from the vector ...更多

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