Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detection of variable circular polarization in the SW Sex star V795
  Herculis   We report the detection of modulated circular polarization in V795 Her. The
degree of polarization increases with wavelength and is modulated with a period
of 19.54 min, which is very close to the reported optical QPO period. The
modulation has a peak-to-peak amplitude of 0.12% in the U-band. The estimated
magnetic field intensity is in the range 2-7 MG.

27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga