Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: AstroSat observations of long-duration X-ray superflares on active
  M-dwarf binary EQ Peg   We present a comprehensive study of three large long-duration flares detected
on an active M-dwarf binary EQ Peg using the Soft X-Ray Telescope of the
AstroSat observatory. The peak X-ray luminosities of the flares in the 0.3 - 7
keV band are found to be within ~5 - 10 x 10^{30} erg s^{-1}. The e-folding
rise- and decay-times of the flares are derived to be in the range of 3.4 - 11
and 1.6 - 24 ks, respectively. Spectral analysis indicates the presence of
three temperature corona with the first two plasma temperatures remain constant
during all the flares and the post-flare observation at ~3 and ~9 MK. The flare
temperature peaked at 26, 16, and 17 MK, which are 2, 1.3, and 1.4 times more
than the minimum value, respectively. The peak emission measures are found to
be 3.9 - 7.1 x 10^{53} cm^{-3}, whereas the abundances peaked at 0.16-0.26
times the solar abundances. Using quasi-static loop modeling, we derive
loop-lengths for all the flares as 2.5+/-0.5 x 10^{11}, 2.0+/-0.5 x 10^{11},
and 2.5+/-0.9 x 10^{11} cm, respectively. The density of the flaring plasma is
estimated to be 4.2+/-0.8 x 10^{10}, 3.0+/-0.7 x 10^{10}, 2.2+/-0.8 x 10^{10}
cm^{-3) for flares F1, F2, and F3, respectively. Whereas the magnetic field for
all three flares is estimated to be <100 G. The estimated energies of all three
flares are ~10^{34-35} erg, putting them in a category of superflare. All three
superflares are also found to be the longest duration flares ever observed on
EQ Peg.

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The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: cond-mat
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: ao-sci