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- W3100714519 endingPage "59" @default.
- W3100714519 startingPage "59" @default.
- W3100714519 abstract "We study magnetic field evolution in AR12371 relating its successive eruptive nature. During the disk transit of seven days, the AR launched four sequential fast coronal mass ejections (CMEs) associated with long duration M-class flares. Morphological study delineates a pre-eruptive coronal sigmoid structure above the polarity inversion line (PIL) similar to Moore et al study. Velocity field derived from tracked magnetograms indicates persistent shear and converging motions of polarity regions about the PIL. While these shear motions continue, the crossed arms of two sigmoid elbows are being brought to interaction by converging motions at the middle of PIL, initiating tether-cutting reconnection of field lines and the onset of CME explosion. The successive CMEs are explained by a cyclic process of magnetic energy storage and release terming sigmoid-to-arcade-to-sigmoid transformation driven by photospheric flux motions. Further, the continued shear motions inject helicity flux of dominant negative sign, which contributes to core field twist and its energy by building a twisted flux rope (FR). After a limiting value, the excess coronal helicity is expelled by bodily ejection of the FR initiated by some instability as realized by intermittent CMEs. This AR is in contrast to the confined AR12192 with predominant negative signed larger helicity flux but very weaker (-0.02turns) normalised coronal helicity content. While predominant signed helicity flux is a requirement for CME eruption, our study suggests the magnetic flux normalized helicity flux as a necessary condition accommodating the role of background flux and appeals a further study of large sample of ARs." @default.
- W3100714519 created "2020-11-23" @default.
- W3100714519 creator A5037328324 @default.
- W3100714519 date "2017-08-11" @default.
- W3100714519 modified "2023-09-25" @default.
- W3100714519 title "Successive Homologous Coronal Mass Ejections Driven by Shearing and Converging Motions in Solar Active Region NOAA 12371" @default.
- W3100714519 cites W135055655 @default.
- W3100714519 cites W1527200030 @default.
- W3100714519 cites W1540015846 @default.
- W3100714519 cites W1611487846 @default.
- W3100714519 cites W1847156677 @default.
- W3100714519 cites W1919900094 @default.
- W3100714519 cites W1965606324 @default.
- W3100714519 cites W1966806579 @default.
- W3100714519 cites W1968391865 @default.
- W3100714519 cites W1973482511 @default.
- W3100714519 cites W1973792090 @default.
- W3100714519 cites W1975186314 @default.
- W3100714519 cites W1981780266 @default.
- W3100714519 cites W1986191122 @default.
- W3100714519 cites W1988246109 @default.
- W3100714519 cites W1988318154 @default.
- W3100714519 cites W1991677485 @default.
- W3100714519 cites W1991758530 @default.
- W3100714519 cites W1991943776 @default.
- W3100714519 cites W1997553064 @default.
- W3100714519 cites W1999016464 @default.
- W3100714519 cites W2006130429 @default.
- W3100714519 cites W2008888110 @default.
- W3100714519 cites W2009935204 @default.
- W3100714519 cites W2012985182 @default.
- W3100714519 cites W2013956233 @default.
- W3100714519 cites W2014209718 @default.
- W3100714519 cites W2014390668 @default.
- W3100714519 cites W2015069526 @default.
- W3100714519 cites W201716896 @default.
- W3100714519 cites W2017397524 @default.
- W3100714519 cites W2018405851 @default.
- W3100714519 cites W2018748816 @default.
- W3100714519 cites W2019550429 @default.
- W3100714519 cites W2028058511 @default.
- W3100714519 cites W2035395338 @default.
- W3100714519 cites W2036706254 @default.
- W3100714519 cites W2038912041 @default.
- W3100714519 cites W2047634950 @default.
- W3100714519 cites W2048465377 @default.
- W3100714519 cites W2048827418 @default.
- W3100714519 cites W2053215453 @default.
- W3100714519 cites W2053913002 @default.
- W3100714519 cites W2054443666 @default.
- W3100714519 cites W2054557983 @default.
- W3100714519 cites W2055984471 @default.
- W3100714519 cites W2060217260 @default.
- W3100714519 cites W2067777928 @default.
- W3100714519 cites W2070725324 @default.
- W3100714519 cites W2070800121 @default.
- W3100714519 cites W2074088269 @default.
- W3100714519 cites W2076098716 @default.
- W3100714519 cites W2079328444 @default.
- W3100714519 cites W2080132202 @default.
- W3100714519 cites W2083082210 @default.
- W3100714519 cites W2088758899 @default.
- W3100714519 cites W2092556046 @default.
- W3100714519 cites W2092786354 @default.
- W3100714519 cites W2094483427 @default.
- W3100714519 cites W2100400062 @default.
- W3100714519 cites W2102994651 @default.
- W3100714519 cites W2105689636 @default.
- W3100714519 cites W2108882534 @default.
- W3100714519 cites W2112559575 @default.
- W3100714519 cites W2120549050 @default.
- W3100714519 cites W2122117703 @default.
- W3100714519 cites W2122755404 @default.
- W3100714519 cites W2141941538 @default.
- W3100714519 cites W2156099691 @default.
- W3100714519 cites W2158612941 @default.
- W3100714519 cites W2171062718 @default.
- W3100714519 cites W2171364494 @default.
- W3100714519 cites W2216857020 @default.
- W3100714519 cites W2963177646 @default.
- W3100714519 cites W2964311738 @default.
- W3100714519 cites W3098113977 @default.
- W3100714519 cites W3098715422 @default.
- W3100714519 cites W3099941300 @default.
- W3100714519 cites W3100047103 @default.
- W3100714519 cites W3100076580 @default.
- W3100714519 cites W3101595283 @default.
- W3100714519 cites W3102956323 @default.
- W3100714519 cites W3103582564 @default.
- W3100714519 cites W3103762048 @default.
- W3100714519 cites W3103796921 @default.
- W3100714519 cites W3103827246 @default.
- W3100714519 cites W3104344720 @default.
- W3100714519 cites W3104946976 @default.
- W3100714519 cites W3106156341 @default.
- W3100714519 cites W4214599547 @default.
- W3100714519 cites W4248473567 @default.
- W3100714519 doi "https://doi.org/10.3847/1538-4357/aa7ff4" @default.