Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From Formation to Disruption: Observing the Multiphase Evolution of a
  Solar Flare Current Sheet   A current sheet, where magnetic energy is liberated through reconnection and
is converted to other forms, is thought to play the central role in solar
flares, the most intense explosions in the heliosphere. However, the evolution
of a current sheet and its subsequent role in flare-related phenomena such as
particle acceleration is poorly understood. Here we report observations
obtained with NASA's Solar Dynamics Observatory that reveal a multiphase
evolution of a current sheet in the early stages of a solar flare, from its
formation to quasi-stable evolution and disruption. Our observations have
implications for the understanding of the onset and evolution of reconnection
in the early stages of eruptive solar flares.

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The categories of this paper are: math
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg