Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discovery, identification, and study of variability in gamma-ray point
  sources   We present preliminary results of a statistical analysis obtained with a
sample of blazars observed at the Perugia Astronomical Observatory since 1992.
We briefly show how these statistical results can be useful to discriminate
faint variable sources against the background noise. This technique, together
with the more traditional ones, may be used to discover and identify
high-energy point sources.

15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph