Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hitomi Observation of Radio Galaxy NGC 1275: The First X-ray
  Microcalorimeter Spectroscopy of Fe-K{\alpha} Line Emission from an Active
  Galactic Nucleus
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin