Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fermi Detection of \gamma-ray emission from the M2 Soft X-ray Flare on
  2010 June 12   The GOES M2-class solar flare, SOL2010-06-12T00:57, was modest in many
respects yet exhibited remarkable acceleration of energetic particles. The
flare produced an ~50 s impulsive burst of hard X- and \gamma-ray emission up
to at least 400 MeV observed by the Fermi GBM and LAT experiments. The
remarkably similar hard X-ray and high-energy \gamma-ray time profiles suggest
that most of the particles were accelerated to energies >300 MeV with a delay
of ~10 s from mildly relativistic electrons, but some reached these energies in
as little as ~3 s. The \gamma-ray line fluence from this flare was about ten
times higher than that typically observed from this modest GOES class of X-ray
flare. There is no evidence for time-extended >100 MeV emission as has been
found for other flares with high-energy \gamma rays.

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The categories of this paper are: math-ph
2
The categories of this paper are: math
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: eess
16
The categories of this paper are: stat
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org