Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A consistent and robust measurement of the thermal state of the IGM at
  $2 \leq z \leq 4$ from a large sample of Ly$\alpha$ forest spectra: Evidence
  for late and rapid HeII reionization
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg