Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observations of Turbulent Magnetic Reconnection Within a Solar Current
  Sheet   Magnetic reconnection is a fundamental physical process in various
astrophysical, space, and laboratory environments. Many pieces of evidence for
magnetic reconnection have been uncovered. However, its specific processes that
could be fragmented and turbulent have been short of direct observational
evidence. Here, we present observations of a super-hot current sheet during
SOL2017-09-10T X8.2-class solar flare that display the fragmented and turbulent
nature of magnetic reconnection. As bilateral plasmas converge toward the
current sheet, significant plasma heating and non-thermal motions are detected
therein. Two oppositely directed outflow jets are intermittently expelled out
of the fragmenting current sheet, whose intensity shows a power-law
distribution in spatial frequency domain. The intensity and velocity of the
sunward outflow jets also display a power-law distribution in temporal
frequency domain. The length-to-width ratio of the current sheet is estimated
to be larger than theoretical threshold of and thus ensures occurrence of
tearing mode instability. The observations therefore suggest fragmented and
turbulent magnetic reconnection occurring in the long stretching current sheet.

18
The categories of this paper are: econ
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
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The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio