Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Development of a Confined Circular-cum-parallel Ribbon Flare and
  Associated Pre-flare Activity   We study a complex GOES M1.1 circular ribbon flare and related pre-flare
activity on 26 January 2015 [SOL26-01-2015] in solar active region NOAA 12268.
This flare activity was observed by the AIA on board SDO and the RHESSI. The
examination of photospheric magnetograms during the extended period, prior to
the event, suggests the successive development of a so-called 'anemone' type
magnetic configuration. NLFFF extrapolation reveals a fan-spine magnetic
configuration with the presence of a coronal null-point. We found that the
pre-flare activity in the active region starts ~15 min prior to the main flare
in the form of localized bright patches at two locations. A comparison of
locations and spatial structures of the pre-flare activity with magnetic
configuration of the corresponding region suggests onset of magnetic
reconnection at the null-point along with the low-atmosphere magnetic
reconnection caused by the emergence and the cancellation of the magnetic flux.
The main flare of M1.1 class is characterized by the formation of a
well-developed circular ribbon along with a region of remote brightening.
Remarkably, a set of relatively compact parallel ribbons formed inside the
periphery of the circular ribbon which developed lateral to the brightest part
of the circular ribbon. During the peak phase of the flare, a coronal jet is
observed at the north-east edge of the circular ribbon which suggests
interchange reconnection between large-scale field lines and low-lying closed
field lines. Our investigation suggests a combination of two distinct processes
in which ongoing pre-flare null-point reconnection gets further intensified as
the confined eruption along with jet activity proceeded from within the
circular ribbon region which results to the formation of inner parallel ribbons
and corresponding post-reconnection arcade.

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The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
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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: bayes-an
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The categories of this paper are: mtrl-th