Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Galaxy-Absorber Cross-Correlation Function   We describe an analysis of the galaxy-absorber cross-correlation function as
a function of velocity separation, impact parameter separation, and absorber
Lyman alpha equivalent width on impact parameter scales that extend up to 1
Mpc.

15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas