Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hour time-scale QPOs in the X-ray and radio emission of LS I
  +61$^{\circ}$303   LS I +61$^{\circ}$303 is an X-ray binary with a radio outburst every ~27
days. Previous studies of the stellar system revealed radio microflares
superimposed on the large radio outburst. We present here new radio
observations of LS I +61$^{\circ}$303 at 2.2 GHz with the Westerbork Synthesis
Radio Telescope (WSRT). Using various timing analysis methods we find
significant Quasi-Periodic Oscillations (QPOs) of 55 minutes stable over the
duration of 4 days. We also use archival data obtained from the Suzaku
satellite at X-ray wavelengths. We report here for the first time significant
X-ray QPOs of about 2 hours present over the time span of 21 hours. We compare
our results with the previously reported QPO observations and we conclude that
the QPOs seem to be associated with the radio outburst, independent of the
amplitude of the outburst. Finally, the different QPO time-scales are discussed
in the context of magnetic reconnection.

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The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
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The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
34
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: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat