Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for QPOs in Perseus with Fermi LAT   We report the analysis of the gamma-ray variability of NGC 1275--the radio
galaxy at the center of the Perseus cluster. NGC 1275 has been observed
continuously with the Fermi Large Area Telescope over the last nine years. We
applied different time-domain analysis methods including Fourier, wavelets and
Bayesian methods, in order to search for quasi-periodic oscillations in the
gamma-ray emission. We found no evidence for periodicities of astrophysical
origin.

28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math