Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectroscopic Diagnostics of Polar Coronal Plumes   Polar coronal plumes seen during solar eclipses can now be studied with
space-borne telescopes and spectrometers. We briefly discuss such observations
from space with a view to understanding their plasma characteristics. Using
these observations, especially from SUMER/SOHO, but also from EUVI/STEREO, we
deduce densities, temperatures, and abundance anomalies in plumes and
inter-plume regions, and discuss their implications for better understanding of
these structures in the Sun's atmosphere.

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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: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
1
The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: math
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The categories of this paper are: math-ph
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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: cmp-lg
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The categories of this paper are: patt-sol