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Statistical and spectral properties of magnetic islands in reconnecting current sheets during two-ribbon flares
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10.1063/1.4816711
/content/aip/journal/pop/20/7/10.1063/1.4816711
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/7/10.1063/1.4816711
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Density ρ (color scales) and magnetic flux (solid lines) contours as reconnection progresses in different environments: (a) , (b) , and (c) .

Image of FIG. 2.
FIG. 2.

Plasmoid flux distribution function for different . The dashed straight line represents .

Image of FIG. 3.
FIG. 3.

Plasmoid width distribution function for different . Here, is the full width of each plasmoid measured in the -direction across the current sheet. The dashed straight line corresponds to .

Image of FIG. 4.
FIG. 4.

Plasmoid mass distribution function () for different . Here, is the amount mass contained inside each plasmoid. The dashed straight line shows an power law for reference.

Image of FIG. 5.
FIG. 5.

Plasmoid width distribution in two directions for the case of . Here, and are the widths of each plasmoid along the -and -directions, respectively. Color-bar indicates the mass contained in each plasmoid.

Image of FIG. 6.
FIG. 6.

Distributions of magnetic energy density along the -axis (a), and the corresponding Fourier power spectrum (b). The straight line in (b) is the fitting of a power law function to the experimental data with index of 2.92.

Image of FIG. 7.
FIG. 7.

Same as Fig. 6 , but for the kinetic energy.

Image of FIG. 8.
FIG. 8.

(a) Variations of and versus time for . The solid line is for and the dashed line is for . (b) Variations of and of simulation box versus time. The solid line is for and the dashed line is for . The arrows in both panels specify the time when the non-linear stage begins.

Image of FIG. 9.
FIG. 9.

Dependence of the Fourier power spectrum indices on : (a) versus , and (b) versus . The solid lines are for the spectral index averaged over a given time interval when the total electric current density is close to its maximum, and the dashed lines are for the index at maximum.

Image of FIG. 10.
FIG. 10.

Magnetic energy spectrum becomes steeper with the growth of magnetic islands. (a) The distributions of density ρ along the center of the current at different times, which shows that the new magnetic islands form and grow rapidly during this period; (b) The distribution of magnetic energy at  = 32.5 and  = 33.0; (c) and (d) are for magnetic energy spectrum at initial and final time.

Image of FIG. 11.
FIG. 11.

Magnetic energy spectrum becomes steeper with the merging process of magnetic islands. (a)–(d) are same as Fig. 10 .

Image of FIG. 12.
FIG. 12.

Magnetic energy spectrum becomes shallower when the large scale magnetic islands move out the system. (a)–(d) are same as Fig. 10 .

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/content/aip/journal/pop/20/7/10.1063/1.4816711
2013-07-30
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Statistical and spectral properties of magnetic islands in reconnecting current sheets during two-ribbon flares
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/7/10.1063/1.4816711
10.1063/1.4816711
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