Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Luminous infrared galaxies as plausible gamma-ray sources for GLAST and
  IACTs   We argue that luminous infrared galaxies (LIGs) may constitute a newly
detectable population of gamma-ray sources for the next generation of ground
and space-based high energy telescopes. Additionally, we report for the first
time upper limits on their fluxes using data obtained with the EGRET telescope.

8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an