Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The magnetic variability of the star HD 14437   The magnetic field of the CP star HD 14437 was discovered by Glagolevskij et
al. (1985) using the 6-m telescope of the Special Astrophysical Observatory. No
polarity changes have been found during 2 years of observations. A very long (>
3-4 years) period of rotation was proposed to explain the measurements. To
check this hypothesis, we made a new series of magnetic field observations for
this star 10 years later with the 6-m telescope. The polarity of the
longitudinal magnetic field is still negative and has not shown any change
during more than 10 years of observations. We found the most probable periods
to be several days. It means that we have observed a star where the magnetic
and rotation axes are inclined at a small angle, and the negative pole is not
far from the line of sight.

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The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat