Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characteristics of type III radio bursts and solar S bursts   The Sun is an active source of radio emission which is often associated with
the acceleration of electrons arising from processes such as solar flares and
coronal mass ejections (CMEs). At low radio frequencies (<100 MHz), numerous
solar S bursts (where S stands for short) and storms of Type III radio bursts
have been observed, that are not directly relates to flares and CMEs. Here, we
expand our understanding on the spectral characteristic of these two different
types of radio bursts based on observations from the Low Frequency Array
(LOFAR). On 9 July 2013, over 3000 solar S bursts accompanied by over 800 Type
III radio bursts were observed over a time period of ~8 hours. The
characteristics of Type III radio bursts are consistent to previous studies,
while S bursts show narrow bandwidths, durations and drift rates of about 1/2
the drift rate of Type III bursts. Type III bursts and solar S bursts occur in
a region in the corona where plasma emission is the dominant emission mechanism
as determined by data constrained density and magnetic field models.

13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol