Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cycles of the magnetic activity of the Sun and solar-type stars and
  simulation of their fluxes   The application of the Wavelet analysis and Fourier analysis to the dataset
of variations of radiation fluxes of solar-like stars and the Sun is examined.
In case of the Sun the wavelet-analysis helped us to see a set of values of
periods of cycles besides "11-year" cycle: the long-duration cycles of 22-year,
40-50 year and 100-120 year and short-duration cycles of 2-3,5 years and
1,3-year. We present a method of the chromospheric flux simulation using the 13
late-type stars, which have well-determined cyclic flux variations similar to
the 11-year solar activity cycle. Our flux prediction is based on the
chromospheric calcium emission time series measurements from the Mount Wilson
Observatory and comparable solar dataset. We show that solar three - component
modeling well explains the stellar chromospheric observations.

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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
18
The categories of this paper are: econ
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The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph