Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectroscopic Observations of Magnetic Reconnection and Chromospheric
  Evaporation in an X-shaped Solar Flare   We present observations of distinct UV spectral properties at different
locations during an atypical X-shaped flare (SOL2014-11-09T15:32) observed by
the Interface Region Imaging Spectrograph (IRIS). In this flare, four
chromospheric ribbons appear and converge at an X-point where a separator is
anchored. Above the X-point, two sets of non-coplanar coronal loops approach
laterally and reconnect at the separator. The IRIS slit was located close to
the X-point, cutting across some of the flare ribbons and loops. Near the
location of the separator, the Si IV 1402.77 A line exhibits significantly
broadened line wings extending to 200 km/s but an unshifted line core. These
spectral features suggest the presence of bidirectional flows possibly related
to the separator reconnection. While at the flare ribbons, the hot Fe XXI
1354.08 A line shows blueshifts and the cool Si IV 1402.77 A, C II 1335.71 A,
and Mg II 2803.52 A lines show evident redshifts up to a velocity of 80 km/s,
which are consistent with the scenario of chromospheric
evaporation/condensation.

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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: physics
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The categories of this paper are: q-alg
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: econ