Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-angular-precision gamma-ray astronomy and polarimetry   We are developing a concept of a "thin" detector as a high-angular-precision
telescope and polarimeter for cosmic gamma-rays above the pair-creation
threshold.

27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn